1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Read CopyrightID inside OTSCanonicalRecord → must equal the CopyrightID above 5. GET OTSVerificationAPI → pre-computed 6-check result from server 6. If all match: this entity was registered on CopyrightChains at OTSTimestamp, independently verifiable on Bitcoin Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x597e33840dd46079a31e6e444da359699fdc37e070e83191591f2d065edd9a0d. Chain 2 (Bitcoin): anchored in block 953909 (2026-06-16T07:53:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0dfacba4-9e40-4ed8-8a2d-949df4898f85.json and https://artists.proofprofile.net/proofs/artist/0dfacba4-9e40-4ed8-8a2d-949df4898f85.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Touched by the Strings. Chorwerke mit Solovioline
1. Confirm isrcCode identifies the recording in the pre-2022 source corpus and cc-db-prod record 2. GET OTSVerificationAPI → server-side canonical-record, hash, and attestation checks must pass 3. GET OTSBitcoinBlockVerifyURL → returns the Bitcoin block hash at height OTSBitcoinBlock; GET https://blockstream.info/api/block/{that hash} → its timestamp must match OTSTimestamp 4. Confirm CopyrightID is the CopyrightChains transaction hash 5. If all match: the cc-db-prod record is independently anchored on Bitcoin at OTSTimestamp Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c5504a66fa50706f738dcc1daab5435f0eea507763d236c7293f984b937fd8. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111302901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3857e4309a1ad53ba8c5ebf7dfed7dfd049b2ed952a8fd65d4265a220ba91d4b. Chain 2 (Bitcoin): anchored in block 960422 (2026-07-31T15:27:29Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111302902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1aab6f07b9f6c3d601558aa2de39fc157d8088d27e90da10d857768aaf618932. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111302904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e364166d4247def983acab58d9afe97627d507c3fe739a662e6a0af5e02fd9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111302906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x410afc60278c3ee6931d449194df18e7524843277998c7b33c75be31447648bd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111302908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7062d8ae7d65ece2167386c4f12787a6648851b88ea9581ae1eb7bc02b2bf6. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111302923.
Lighten mine eyes – Contemporary Choral Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f6ef4c222bf778b61be3fb72d4ab7575bc44026000bce0e9ef3238001beabe. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111000701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x432b22ce7432eab3a5e33dcf0df309483f78f5b0052a29811f38365e734e742d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111000702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde3a5f0b0829a625e176b2eaaba87b5f086fde40021e101b80e2d60526cc0b0. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111000703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf69be6bc0ebdd210b108d91fea31d613e89032f9ec78e8d19645bbfc3105d14b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111000704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb4b58e52f061c3c39ae1856c85fd39710ae0bc38bb15df697ed846f91f83b12. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111000706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169608447373e6d1a6cdda1ca6a98f8f0576fe640950c75817f002006a6829dc. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111000709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ef24531c3a2a0a6539e603af774fbaa0a5be9d2dff654ce334c25ed75f9dfe. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111000712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf4fc65dafd75a6adfd57e336cfd42574a46d2e53b25a766aa693e7c08db72d6. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111000713.
2022 Texas Music Educators Association: Stephen F. Austin State University A Cappella Choir (Live)
Stephen F. Austin State University A Cappella Choir
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12977da2a9741202b0dae0f30b9e0d4eec5649c82b6338ca00e9ac143c3b7b83. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USVZX2211911.
Maria Himmelskönigin: Die schönsten Marienlieder
Marienlied für Chor: Übers Gebirg Maria geht
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3960d34d874da15b653f753c1e22a17d00bb2597a0d9f1da3c81863d53e666d0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHC20828333.
Marienlied für Chor: Meeresstern, ich dich grüße
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8752e28ea17f4a3cd4437fb038e7a29617e89a654cb9bf876196cdf0ab251e. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEHC20828336.
Daarler Vocal Consort: Lost in Transition
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x949eded6c4bdedc04d10d38cf8478f142927b8542176228b07a582b8ba2d8fe8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEN421409001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc47479253f9fa724d60d01cfc4ad832febdc9dd590034fd4b68afba5143a9d38. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG90803701.
Drei sechsstimmige Chöre, Op. 39: No. 2 Abendlied
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7dd988bab501bc20c5776728c34f88cc4b63785b7efe596e4a45452a56a0e54. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG90803703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3035ba003fd2dbd283a9c3399d1da8bcbd2ee57843a86ef6572f2401e269d20f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG90803704.
We know not where the dragons fly (Bu Zhi Long Qu Chu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7664b4d353fa7c75e941e14a4ccecf3db74e18a18c1aa6503b2f42fb528d5af0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG90803706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c76438ab600d70a2dc4ea2c8dc8c193d61b9c9f0b3264afd3c97d7b472f1d6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG90803708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb36b1490b5349ca077526956b372b30ca84855aea81445255ce292980c7bb0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG90803709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641ea5295260c09568efb862ee95fc2f3384e7d969a6a3796607960f1a9a407b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG90803711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2385b4b945850a6e538fa933f88fda746b55887a3d1c7dbb9909dbf005035d44. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG90803713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc0fd480d5b9bdd0357e6f8b20b5127c83cd399e94b56395a6b851c354dd0d2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ70501004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03f167bbcdcd04bdc844716b644dbe544252eb0d771ea3718de0e918b454b8e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ70501005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f4145f6fbae11b3f0165090485209b519f1f4869208770567505b35af0b7c1. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEAQ70501015.
Vesperae beatae Mariae Virginis. Marienvesper in zeitgenössischen Chorkompositionen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c446f5a7aba825d2e6a398930685b7647470653ba1d67e601ff2feace20776d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/ATH071528101.
800 Jahre Dresdner Kreuzchor (Lieder aus 8 Jahrhunderten)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c603a0bc752740f6dfd6a9f35e0ff3d6549fffc16558af84744907345c12f3d. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380022493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07f73023c76a8dbec584b80b4e7081f164d4a24e5db0f898342b447f5866a734. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DES380022499.
Choral Concert: Die Nacht leuchtet wie der Tag / The night shines as the day
4x4 Female Choir of Padagogische Hochschule Heidelberg
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8faa6082b511ae94fc4ee89833256b11c9414111a6eee221ab8b1a64d73d88e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DECD11791008.
Det är en ros utsprungen: Es ist ein Ros' entsprungen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc043ff0bcfb04524027e35018ffee58d96bbe1cae12660e65dc9ffdbe70fb6e3. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELW71350601.
Maria durch ein Dornwald ging (arr. H. Kaminski for choir)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe19ff392f2bdf9f28bf62906a04be4b8058069cc00943a2733c7c3db7f42585b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELW71350603.
Festgesang, MWV D4, "Gutenberg-Kantate": No. 2. (adap. W.H. Cummings as Hark! The Herald Angels Sing)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e85f39a7e92c1a264156ed92b1183e80ce391ec13625e46d3d1582e0458b045. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DELW71350612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114603e299bb8a216bdc1d1793fe8749ea01c61d284ca7ea6cc615456bf4dc3f. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEW742402003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43569d4d25dd4272eb56e084e548f80018e591296fc301759b62608ce66d9d0c. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEU920656020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d960996447aa45b8af9fc84c47315baad4e64595235dfbf7bebb116fcc7df2e. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE019300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4209405396473e116266dea8e3f12df85964c1c65d41fc61fa2fc39c52677ce4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE019300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d06859f5e61b77fa62e2a35afa41f8a3355a86288af3869443809d33ff1efbc. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE019300022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x375e0ba646e9d520fe176b2f9172c7c21673fa0a02b329753d187f48d8567bc4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE019300023.
Violin Sonata No. 1: I. Modere sans lenteur
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6586d555b71b2eaaefe41dbdc292534757b529ce74d8e1bc408fe3e2145451de. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE019300031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73f3b7e14eb85771e9976f3b7c704acf8fa99a905c328ac0f8687a3c66ad0ec0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE019300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e02009e0e4e318dd4fe772effdb6839c241d787b9330ec715e2889f2dc3b19. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE019300050.
Wolfram Buchenberg: Dum medium silentium. Chorwerke
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c66f14acaf8617335cf846dcdd2ec39723e6468a3e6dd2b7de0b2cef1d2413. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111901804.
Tombeau de Josquin Desprez (O mors inevitabilis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c66af0165e01a93aecfcae188e72b03c715d3db881a51bebd149b3dd6c54b6d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB111901805.
Vier geistliche Gesänge: Erbarme dich unser (1997)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3248e18c41ebdbe2f404288768e4818db64331091088ea3e37a5211cbf8e61. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG91210802.
Vier geistliche Gesänge: Ich bin das Brot des Lebens (1997)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x382fa176489d77eea66c5ae2468f7cb6cadddade21ca59c615ef2af551ad966a. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG91210804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4ed01afd46b46794f8cd625e74a6953a64e00cf25399275045ec66c756402d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG91210809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b72de04a6a6e8f4b22b6595f2e1703d775bd8174c848e2fd0f2dfc0bc60724. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG91210811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc15109f002d2539029700f9ee6eb36591fc0eed3e924077d0c01f2e16bd1cf0d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG91210812.
Es ist für uns eine Zeit angekommen (1995)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x854add6778f764610d8960f7bf4dafd138720070a40279bc90b6ce07e7ccb157. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEFG91210814.
Kinder- und Jugendchor Unterwegs Achern-Fautenbach
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcaf97b21f27c7809c8f6fd5ebf50e696291a346e912a55d1bc765122d953aaa. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110802803.
Kinder- und Jugendchor St. Trudpert Münstertal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944af3b34530124635d76726abc2e1457c45771fde5cf6b85ca7da25823fa8e3. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110802804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51c0dfdca60b572d3882e65509e2ced5233ad03774f547e50019e8eb3a61b6d4. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110802808.
Kinder- und Jugendchor St. Fidelis/St. Johann Sigmaringen
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5741b478c177f764f66cedec76ba66b3f823dcdf363c3b6f936ae2025a618846. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110802812.
Singschule DoReMi an Liebfrauen Waldshut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c389eee16878005f4b1a664e6ac962d17d364a242742750f3f535221df53baf. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110802826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0bad2c868eb7e4153caebfb3c2bb49fea269f2f1ef913e5d4ef9174edd6899. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110802827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf27c4f0a1748e6c04f212d505c247576d0292ac87304b0bb13d457071f5a303c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110802830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8048de9bc47092dbdbca52e8cf4b9c3dd7620d770f4dbbc3b3c46bcaf153f836. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110802834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8673e659c105d6d79449a901003e2574ba8bcfe2b986d67e747fb726ad2409f. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEB110802836.
Der Mensch lebt und bestehet - Geburt ~ Endlichkeit ~ Ewigkeit / Man lives and exists (Birth ~ Finiteness ~ Eternity)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5ecd95c87cf05f3c90d2ae6290c4a142e3ce1c36578341cc715ed61d378024. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA560642238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576dc3b999b167b335b81615e8fb2c4a0bb5fc42e92e4611661ed84bbc238186. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEYX82236963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5b91fc55fd2f5c77f7b5d9e14005044da88c53a74e90d1ed9838b6c56a866a. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEYX82236965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0bd3a9be36e285a7ddd678f95cd18f739ac329da2dd0b01cd7e1b277af8666. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMEU32307463.
Herbert Howells: Requiem - Sacred and Secular Choral Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132ebd1c4b4b7faad23d1ef8533446e123f6fa24852c067d8afe5613ec3f3b16. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ2136760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e2c1450dddb46d7fcb9ce7317478653b04bf85e3c824d4881275104d64581e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QM6MZ2136772.
Schanderl, Buchenberg & Zink: Buji-Ja Bij-Ju
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2624913e5862b0b6acbbb03b90cc4d8ace3a023617828325e6e5042aac3128. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEGF91715503.
Hodie Christus Natus Est - Festliche Musik zur Weihnachstzeit
Stadtsingechor Halle: Gott ist unsre Zuversicht
2012 Texas Music Educators Association (TMEA): Texas Tech University Choir (Mirrored Messages)
Orff / Genzmer / Reger / Buchenberg / Regner: Choral Works
Balzereit, Charlotte: Fantasien fur Harfe
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d960996447aa45b8af9fc84c47315baad4e64595235dfbf7bebb116fcc7df2e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), registered by our registry partner. The server verifies the private canonical record against OTSHash without exposing internal provider keys. Confirm the public ISRC, CopyrightID, and Bitcoin evidence via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/DEE019300010.