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 0xe6220c67d0e1ce0fae942b638d44f10f52dad686d0530edf53f9c1037a1298be. 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/780adee3-7e02-4be7-9d3c-d122d67e29a4.json and https://artists.proofprofile.net/proofs/artist/780adee3-7e02-4be7-9d3c-d122d67e29a4.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 0x6b0e2f0b62d736c6ee1e5961f4310300905aab2708d87dc2d5666621e29cfcc6. 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/USA2P2250367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa102973e75ef03b31a9dc072af18dfa65538cfa04f7f4ea7f98642f5377ac91b. 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/USA2P2220186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ad671632a1e92a4aedf530e2c866c2bf39a7f2b4485531100304f2292760de. 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/QM6MZ2048730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92170b0f12182ef93b47495864b2a5cd4c28aab7035c553a8f8a107335011138. 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/QMDA61872566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f2bd163de2166069dac12875c6b36a57dcd2d50a45e6fd0f7113dcb54e392c0. 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/QM6MZ1854673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe688243c3ef7eff23dad1d0f76bd6331ee6a08ca319f758b7a140cfa72869893. 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/QM6MZ1850374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7436afa8f0fae812d309dc4ebcbdb0fd53b8f051e48306cecb865e9b0e2aaa5f. 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/QM6N21888644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74cdaf1ef7ce28bb55d0672bf68711638cad0b15653841d82e6218916816a24b. 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/QM6MZ2018232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90698a911e1af26d54932bcadf3b5066c2ab119569dbbc30bfb23e25633fad42. 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/QM4TW2074626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440bb45e1732b9bf322fc16a5528087923dc760a043122b5530c1171c8591ffc. 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/QMFME1935560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae05aa352b8ea2a6d13ac193a313d581adc8360b24e7b8b62b1ffeaaf163766c. 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/QM7281821623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf3974376ccdfdbb69b71a2728730fdc129099299bfb414d85e67186e387e2a. 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/QM4TX2044242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26e6f235a89291b9ff693e8482f9f88a79b3340f6826753cfa15b55e326e32d. 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/QM6N22043201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe4dc99d57c9059e372d90bfd7d69e7464d3ad8e5a14b5c9757da092872c220. 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/QM7281955382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9101177ecfca67c3cd0565e144a8bc3779feb43f7b3a93ae70b0af106bcfaff5. 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/QMFMF1907218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f832e63bdff93c983dd99def65d5d1c77c0868266e25143bc96a453c3c0ed0. 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/QM4TX1939221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2107da3b3904bb93d9f1b0275f6f3b7a8789f7bbf8d4ebbbbe837794799d02e. 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/QM6N21984280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bc0882d1549b55d67852bf0ba51ef5a493dbb4ff633cc5118c6afb038ca674. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/QM6MZ1807751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08ad0ac0ceef4a80f1925f018095e0ddb2f5569b06fa2920c13b606ce106ecb. 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/QM6N22423909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1ecbc7f4257a218b6ce10e235d75b93a8fc0dd6bd53b2ebdbc84bae30aaf15. 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/BK4DA2300872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c112fba917afd78c845b63271b8908f2d06d87de5708676b9f16b3314ce2bd. 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/USA2P2156361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2bd919dddb369bf4e334a12eb9df3cbfb1e1dd81fca55270a0caadbc7d5fbe. 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/USA2P2134850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7861dc096b24cb379b076711b4d81ab31aa27a03ca43d2fc5f1f21d3b3aadf2d. 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/QMFMF2027679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b670e64f8facd2f7f371037288ed8a015673e4cb135abb9904b9fc6717ba161. 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/QMFMF2021969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cb0244787bdfa5bcd5fd6a83f6bb075b78c1e1ed154e633ec6c836c36a00ee. 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/QZK6M2055114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26e6f235a89291b9ff693e8482f9f88a79b3340f6826753cfa15b55e326e32d. 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/QM6N22043201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90698a911e1af26d54932bcadf3b5066c2ab119569dbbc30bfb23e25633fad42. 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/QM4TW2074626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7436afa8f0fae812d309dc4ebcbdb0fd53b8f051e48306cecb865e9b0e2aaa5f. 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/QM6N21888644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638e228e4e1d0a63ac1cbdbf835359ce449a58cb216b08a8e5ba60cac056efee. 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/QMBZ91930789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb66d142af99b4b7b68d64aa7d73654a0c34bb87052cd90d4c772e36e74af8a18. 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/QZHNB2054489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fa41d15fae976160b16741d56eee0aaf46b16d53fc2f93b7cd5690c70dc469. 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/QMBZ92089079.