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 0xe495570a3f8069597b94f267a93babca95d22daabf7f8c167307e9bd6aaf7ff5. 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/8074e048-ce11-457f-bf23-624da885417b.json and https://artists.proofprofile.net/proofs/artist/8074e048-ce11-457f-bf23-624da885417b.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 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 0x49dc54ed24c1e5fa84a351fc693991e308abb8f7d86b796ac23454db3c3f66e1. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYSM11100922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc504c1f6a8a972990353e414cfda61f9168afb87c9ab1e41958ea0dea682b3e1. 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/MYSM11100924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51321e1deb219dd311c2ed087078f5a1c3ab164239869930c57ec51c54fd13a2. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:38:09Z), 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/MYA119500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c204b3a900d2def48ef5de632044683adf76a6858b4864ca47a932de048878. 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/MYUM72000188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c686160c6fd91d6b49f83f57e4d6fd5ba32fd2a106875af0ab37816e6053831. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MYA110200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c8422fd4e9f0e31b5661fb613c576f21cfd54be806e804c03a5e0a3a2a97c5. 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/MYA119600160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67847e983ceac4b8bbc8ef835b68d0b3f6c2cecd7a85c373a5b34a8a0bdc192e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MYA110100048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72088be6dd10592c910845a4b182d2da4eb96810b5d9eff89da74bff69686e07. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MYA118600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c068c6d16e220cc4d43b3c1b563eb6b798aa578f29d8f22d54a7d4c337b4f51. 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/MYA119900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6c53e55e2e1b624698e0f5de66abd2e6181464ff8aa5680f8406159770f91f. 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/MYA110100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99cd00ef1c975328b4c87caaa745a6fd25789d67f37bd0d21978b666671f95e1. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/MYSM19010007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0414ed8527c65c4bd4a40cd052276e2aa73e245d357437472bda417ea8238a3. 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/MYSM10400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82af3173faf030ae400154cd0ec8dfb00df3396224b12198e1310bcebbb41a7d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYBM19900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee9b6cfe5b826575ecf2512e9efac2821ddfb5582f579cedd0692d0f2f548c3. 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/ESA012559556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfef13c6d1c96b0b8e27ca21e82dc69678df8f1a08906d5620f007ecd612ecfe. 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/MYBM10401002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5714e765e80c0c08c1c2f6cb2155945fea8129db7b01010beefe24b78602c7b9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/MYA118600101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8f4ebb4c6e008260a39a06b84274652207e65839a840658a948c7f6018c04da. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYA119100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8770295757bd10a632874b86e48f00c72142691041af7a66e1fe803f9adb7879. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYA118900087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43a579e8402bde7d4435002fe42e8fb609fe8b91d2d453c5d13773aed5c8107. 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/MYA118600140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50b287f9c29ba5860b13dbbf81eccc87c0c2f0e844dd6847d6babee1c6798d8e. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/MYA119800013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd281b4b696d7cd9ce47e446298a2ae468b6f05ffade1192882b178ba1f19dfa6. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYA111600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8335c927f53d8c0b8c2f68843f74387e7c84bc683b206a76ebe1a09d5afb57e. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:27:36Z), 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/MYA119600053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c686160c6fd91d6b49f83f57e4d6fd5ba32fd2a106875af0ab37816e6053831. 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/MYA110200099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e583f26b8731cca4dbd3deccba982de7241234f744d0a31c4d725712eb7c4a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYA118300071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa89fdc9fede7018d8edb3a34a7728d51d22a2cf03e5ce89b23ceafb0fb0dcbc1. 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/MYA117900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x396f5afbec8d5aece94aecf2378444d9e3e09f91ba42fcfb9d74887c0f419896. 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/MYA119000094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242164911e9258dc2cc530698b9adbae0e4bda19b963b0bcc4cc7bdeb116abb0. 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/MYA119300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b556d98a208229982b0770d0ae5b95ef10b9d3485bbc4340ed9cf008aa4bee. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYMA11800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf1b816b0eb5094e9c6b5c2a4a5524648e90c92f83e55d0f7d6736842dba43e. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYMA11800157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c8e50bc11c6037bc9c76c74c2a75180f674cf62042ad51b406c6d9dae3b549. 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/MYMA11800163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe431ff51c125eab8f90e4f187d19864abbbe39ea7e95b09f0a5ed1971b44380b. 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/MYMA11800160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23067b8e02c4ea85c0d2816fcedbb88550454ec0d7cb56eebe948d1e7f5aaf6c. 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/MYEM19800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4f3d3e0b6ac50a7faaf9163659c18887f390b9d4e8b5cb5b74d13015ecd223. 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/MYA119900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbb050a92cb81b863c30dfb407f0e9239e43b8374fc50a19a8f7759f986719f. 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/MYA119900122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6bed10b0d8d12cacfe69b283ab08833ca0d2ed9cf3e50c6f4f4eaab03c3a819. 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/MYTP11700526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x400e449b5bc60123ee5e95b9d822242afe804c2b0fa29d6cac8247b68055670c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/MYTP11700533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3764bcbde1cff7e932b564099774f93401d3227de3e35eae57d99ee0d911aad7. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/MYA119900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aadb0902bc982f650bbee1745a832c9f54c0eab9f3eb74627d0cb760c5f6463. 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/MYBM10400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4f3d3e0b6ac50a7faaf9163659c18887f390b9d4e8b5cb5b74d13015ecd223. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/MYA119900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bbb050a92cb81b863c30dfb407f0e9239e43b8374fc50a19a8f7759f986719f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/MYA119900122.