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 0xdb8610c0dcf05edcd3b5e5a501c06ed820006faccfbf831a0400d3c42bdbc7cc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fa8944e-8f6e-4993-aff6-9f97917c6d95.json and https://artists.proofprofile.net/proofs/artist/5fa8944e-8f6e-4993-aff6-9f97917c6d95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sånger för blandad kör a cappella (komplett)
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 0x78730ac5cba1b20f071458e952bba218a5e875ce7f76c4d08b075e3efbb73526. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/HKI190920614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f5982163f6dfb032a1fafe3daec8717b08a213bacfc064815992655cd26c54. 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/QMDA62178574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ee47a841b1c5983397e986b722b82ac1603eb64728042f02f3ba77f49a4350. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/SEVAF2000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93780d318666e6d7e27a0a8eb4cac55aed404f12ca1dd99df4075c0203fcf0e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/SEVAF2000402.
Goldberg Variations, BWV 988: Aria and Variations 1 & 5 - Arr. for Recorder and Nyckelharpa by Kristine West & Erik Rydvall
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271fefa6afe3131fec298843cc8fd719043706a34ebb4a7170a4193e0ad3d015. 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/SEVAF2000403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92183f9f3194f3b2303f5a7779f0be9162c2d9a4afd4e0dec1d0879ab7b8a97b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEVAF2000404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8ce5589c665b63bd0026a3f4e4d8e4e852f0a9c2c0bd12e4f33fa21fad1b384. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/SEVAF2000405.
Partita No. 3 in E Major, BWV 1006: Prelude - Arr. for Recorder and Nyckelharpa by Krisitne West
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc2c7f480bd19075e1ae406a1b6c38ed4c681c75fbe57c1cb55bba0d8c9cd92. 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/SEVAF2000406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7c9b298841fdfbee743f001c412fe15eb9a286e0355f3ae073e6342a33e67de. 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/SEVAF2000407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d3cfb295d3f0fdb820cd2e4d61567c4a30216ebbc8eae2f2dbf89974dd9bc7. 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/SEVAF2000408.
Sonata No. 3 in C Major, BWV 1005: Allegro assai - Arr. for Nyckelharpa, Recorder and Guitar by Kristine West & Oskar Reuter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276e10f56d95a85a417d2492040393236bbb63dea84a677a53864b3aa173513f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEVAF2000409.
Sonata No. 2 in A Minor, BWV 1003: Andante
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4372a19928ec042e146b07522f01d1aa5392d0fe9afab3ecbe4986c15bc7978f. 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/SEVAF2000410.
Partita for Violin No. 2 in D Minor, BWV 1004: IV. Gigue
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x945fa37eb99974dddd38e59b985c9ea7c3c60eb45cd2c0855b37b22d04e1ea81. 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/SEVAF2000411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05ca7c2e1459bef2b36753a7da78b9e64d721040172233f21d5885602d46e29. Chain 2 (Bitcoin): anchored in block 960355 (2026-07-31T05:49:18Z), 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/SEVAF2000413.
Concerto No. 4 in F Minor, Op. 8, RV 297, "The Four Seasons - Winter": I. Allegro non molto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac348a58a68cdad7159cce2105be5c003da8e9128dbb27d44e169daf2fb64c5. 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/USA561162126.
John Wellingham Plays Music From Byrd to Bach
Von fremden Ländern und Menschen - Kinderszenen
Klaviermusik 50 Meisterwerke – Klassik die man hören muss
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18cd2f2ffbc7b0cb5a37c7479470821abe86c285ab09bd9169731fd8549dcf92. 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/GBAYC9803011.
Reimagined for Ballet Class, Vol. 1: Songs from the 80s
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c50807a0343ea2a194b69e2cec7c8f4f14f306a60bbd97f0874bec15e70e2f. 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/GBKPL1936190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba2743f6cd60aa2b13e686a6faf3c24738bb36e72cbf4ac0993739cb8ac797a. 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/GBKPL1936191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf0c996f10b680c4c7f24b0929f215754a54fd3dfed0e7ef11a64993d7f93bd. 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/GBKPL1936188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f4c73047e2948a08a4f08f74c55987f541a8d3b7e53c431665f4173af9d7fe. 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/GBKPL1936192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c6d84aa5e759cb0646adc6af8ac887b592a2ecd400dd1cf6255754449f1aea. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/GBKPL1936193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a5de05dd8c2f50852d62cb63854663e8d236c323f067c8425434069642e2f12. 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/GBKPL1936194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12be107082947bfe414a8952fa9432e5a765b4cecfcbac92c887565efd678a3b. 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/GBKPL1936195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5912198ef104ee621843c4900357f0b270c089355b8692e14836ac32ad302ad5. 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/GBKPL1936196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec8519577da478794f9ba6eb3de5dfdc97ff0ae645ed4ff5c561ac6ef260d5e2. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GBKPL1936200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x554c81bb4bb341d87f138d686df6980b7c6546bf6542a4f7341922c089fd966d. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/GBKPL1936201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6779045bf5934836cabddab1dc004876d91be14a811967357cecce6d3cbd5f64. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBKPL1936202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8195f43928caab1f917e06eaecc1a34a10f7ae05bb30cf5eff4f2e218603cdac. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GBKPL1936197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcf78a685bdde0d3f3c46c6b20d7d62ea85af43d27ec783c6cea7cd79d079f64. 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/GBKPL1936203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c8da3923a2073005a2df044ec16a331fb3178743f39653e55d72637dece253. 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/GBKPL1936204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8179b60963674944e7b27bd08bf46524ea4b4a3aa48b0a0887bfb6096f97eb7a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBKPL1936205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499aeb14b18ea804c5a44a7cfc290278c084d237b57b01c429a02149824a546b. 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/GBKPL1936177.