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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28abb260ea6a885c8293a7f544b4e3b8b4d444ba509339fc4ffbc63342055a6c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/95e0fe6a-2437-40b2-90c2-c6fa2e5eebee.json and https://artists.proofprofile.net/proofs/artist/95e0fe6a-2437-40b2-90c2-c6fa2e5eebee.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fa443b5a93aa4e61e0e9ed5b7202ef7f88b2ea48d23f769d0641073adbacf5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DEUM71304189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1bd25848c650aa26ca1ca628965be41100486dcc4ff2b87b8b5bfe0c3ec327. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEUM71204593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5ef816b59e38a31d325a7b7d9b963e876b0c1f531d0ff09fa9c3da87803549. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEUM71204594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7f737b4b454babbbd99788819f34c2e9d6e10e1fb1690190a178643e680c2d4. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEUM71204595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af66ea798a7962b2f474830313970e4c7923acd4a80e10dbdca30824f68b9c1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/DEUM71204596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf18e80cb170e9b64699799de2ae9183273bce0f36eedbf2e8cf7a83875736f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/DEUM71204597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4754fd19d5d84be652792ff8afb8c4c86968b5bde264112716de37aed4e97df3. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEUM71204598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81de75d2f643a44a388054d97ab6e4ffdebecd641ebe483cba3f2e192f35328f. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:59:59Z), 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/DEUM71500388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3561cd813a7d699fa4aa4d0b42e4ba98db856ff6e1d71d66af2cf27eb12ddf7f. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:10:53Z), 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/DEUM71500389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a656b9c1622b3cd82cb0286ff8f04a69c06742137c13a8b494d94bc66aa61a. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DEUM71500391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9e71531d54d697f69555f3df7c5945780c0b85a60676ce86aecac709fdedd77. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEUM71500392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d95adc93b99a46b78c7611dca1d34ce88269a4d80f57f18cd11e647ee0aa63d. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/DEUM71500395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957bdc2afe240b9270605db13c654941dec1e3ff4cc3f19546deadc731f190c3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEUM71500397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e06b30aa84d9ea72632f16dd73eb70b69b24cebabc37f3ecb2ce5d103afde9. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DEUM71500398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7391a77aef6b61929cc0baed64a0d364e8be319d99dc6c32b15db578d4de2534. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/DEUM71500520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8acac92ae768b9acde32a8825c7d396d3f7e4312239eddd05a77d7956dbda36d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEUM71500573.
Reisegruppe Angst und Bange (feat. Jan Windmeier)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a779515e104c2d704777f03d514c77ac6ef50a385b708cefa7c657539d451d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEE861800679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6807cf9c20b52bb8fdbf176730a19f31e073a27857c054e74ec6e2505a0c4c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DEE861800677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9de6a0fea4fd3eb02129d80dfe51083a251d10735a2d6500bca8037848fb43af. Chain 2 (Bitcoin): anchored in block 957620 (2026-07-11T22:32:56Z), 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/DEE861800678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4236c76f4db1f9a296160623bcc9cb8f0167e45ee5793ca44823e3441b0e2a22. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:19:10Z), 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/DEE861800680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a9fc9b77b45d9f88322f012bf363e9bce266a65d1f454e6baddaef4e322c0ad. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:22:50Z), 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/DEE861800682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5167e5e643fc69cdca5532dc0eca50dbe82ca38ae722cca1a0ea41e0a25504b5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEE861800683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb391d0b7f3d2971721e1ffaa56b66ce579cef713923e3092786b825a7b3ad372. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DEE861800687.
Mein Herz ist ein Tourist (Radio Version)
Der Letzte der Nacht (Live at Elbphilharmonie)
Nenn es nicht Liebe (feat. Stefanie Heinzmann)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6584495d6916b8899de406cda7d19c7cc22d7946a2350307c150cf62fa3768d. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/DELV42000692.
Im Sommer 40 Grad (Schlaf Kindlein schlaf)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3499072c657a390f80e56a169d1500bc5e768c9afb5714c2c40b81faba144af. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DELV42200806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9b5f00aa7796702b78aa58137db76f0881656e41633e609753188f7c687177. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:39:53Z), 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/DEZC62434893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7170a83b8e2a2d00b53b0f8dbab3ec71ec6e31fc59658f50a9aabd49b96efd2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DEA811600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x376d3732d002b22c5507eea410a8b33d6cb2a8869de587466de74b21e730589a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DEUM71603568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd8d571149fc0f7c0380392ff58e7eb4ab8b663a5f2b5e1d936cc1f5d78b0492. 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/FRX201906517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc583bb24547894860edf456fc4abcaa30d562d1f6d7f0af458cee250781e3d34. 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/DEXO32218850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9f6af6396bd626e33950c94a8dfbb734566e002f4710677978b9110ecdf903. 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/DEUM71603681.
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