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 0x4639660f7b800b1c145fc33b202f1f5f55918480caf85ce13509f10cf9dd7096. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4c7ccd9e-96b6-4e6d-b625-bf9e94ad278e.json and https://artists.proofprofile.net/proofs/artist/4c7ccd9e-96b6-4e6d-b625-bf9e94ad278e.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 0xf67ca8253e229d1666a3969506be79f1bbff6909b86bdb82613dbc0f1b7f2d5d. 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/QZHN42054997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3636bfd931461f23c96f042758acbef31ad082cfd5c1c768ffc3de4abd69dbe. 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/QZDA62112030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bb13a5fc86bf019eca6effd7db8ae34381d7f8064567cdc63f76897c400457. 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/QZFZ32041235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb15ce3caa10b2b94291c221d12605295a8fc5cbdb7c7e4e8682cf33064ae2d5a. 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/QZDA62112031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef6633e5bc37d4ce57db20a7ce5f5f3ada4d62b5f1fda3e712b1558020865bd. 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/QZDA62112032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8c2dad7ca34961199f8fcca5f21fb7948f17034ad0c173f6439cfdbf62909d. 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/QZDA62112033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62bb85d8958c69327ba6ae38a97266826cb5a3c541c06e12436d7b7bc9d91cc. 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/QZDA62112034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20311e6396c77e90269aba245a4c6f70a38298d0a2263ed1c5f6df45a54b0dc7. 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/QZDA62112035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28afdbb670ea0a931b652e5b86271148b585dfc7378e0cfa9904f6eb228736be. 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/QZK6N2058283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ad21754fdad7616ffe5bdc6569c403b493b3251a72d972ea56ff82da661f58. 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/QZDA62112036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e461ca014a292f157ebfa5785d9b556512c8cfd6c076a27e5991fe167b62db. 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/QZDA62112037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eb3fe18f1455d1860eabd052d6bcb0927c1bf282be4359be9a25b7c895967e3. 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/USHM91669244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9d9a330e018b65033315482a2ea2d5c4d35c2d46f5a6b58d7f67392144dbe5. 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/USHM91669245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f0f61969dfec24513973b64beba965029e2c151dd34da464500087e1457613. 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/USHM91669246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8243d5993f16b8719a622e78be46abef1f10453114956098cafcd3f6b21350d2. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/USHM91669247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe8a6c161a0e7436ba955bba533b754aa2b5ac4580b61d7ccc48418e78be94d. 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/USHM91669248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b8891c86cfe60a4e1ce8c58c0c0b8067af2d20fbf3a387648ba9bca73d9143. 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/USHM91669249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e530bbb7b66566bc479195491411e876fd34d91ca25d562871b81493259e1d2. 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/USHM91669250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd68af87c227b838e85545975099feab72604b82f2da168bc2abdbfd497097c5. 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/USHM91669251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x947678f5000e16c7e7f83db0d9fe6f6abda63ba793598341b2e165c416daa4d9. 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/USHM91669252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40e6e67fed0640391464d97a45d61a54c07f6f9a5ab07217d5765d17e2b6c36. 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/USHM91669253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae331470c78b7b2a6c86e2ddfa5d1cdf386a0fff3c156a0696dfc233d4f02f8b. 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/USHM91669254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4d5dd0144fba4c0115beb558c392488a002813e25afd588839ff602494ca71. 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/USDY41838908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b401335d726b86dd8f36b93bcb031c10bf2f6051a49c55a7cdc925f94c46d0. 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/QZHNC1959259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7bf4b817d3ce49baa6d80a7de61367c6f13ac91d760ffd0651b5b7c5fb0ea57. 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/USHM21925512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8e85c0933c9f748210f720dc59346eaba0a7e8186fa3ad8e1303e74736704a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZES82057803.