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 0x3fd6fb2b0d99ab41ae6aed481013802a18ea61df9d953714c973d1bc641aa59b. 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/1d94e7a2-0227-428f-b876-918e5fb2869c.json and https://artists.proofprofile.net/proofs/artist/1d94e7a2-0227-428f-b876-918e5fb2869c.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 0x0b84b05873630607dc5d836008c47e5050726d25f81ae31630e4b19d45bead97. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH6542005552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fc0b763ea9ea719caeac7ff78e246128870e1ff1345273fa31a3295f96aba8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USHM21946553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x234b44351030675170895ba3122a3699026ab7bc4899d27c67e87b70ffa8efb5. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TRA162100614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94758a4564fc8b4d4dfdffd486b2f7816b81dde96522b2245c50c77fd289d0e. 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/TRA162100623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c8dd548d69909dcbb0812319500f1a0f17a52c508c72a800cc0aad4f35c3b8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:55:12Z), 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/TRCCT2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc36b060eb00f708a292a4953b19ecf6480b8c8a29dc74234aa5637f6e772df1. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:59:30Z), 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/TRCCT2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfddea22563cc13282f25b6caa49d28a9746f9ce1f838c95ce88d3ddbacebc0a6. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TRCCT2300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c2bfb7ee84645bac15364107f3580708edd2ac08ad8df103552323abe580ef. 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/TRCCT2300144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5b2a0d80ea8ab66c801f43bfd427c04167b0fc2ec05631c9a0a79e261b6497. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZHN72439667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead4374b1a3b1136be149f82e57a1777dcbb2850835925034ed68ca11c8aa722. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZHNA2424541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59884b7a30cf322f5fa41093370572df34bf1062608829c11d63117c74c79d9e. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZK6G2421699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed66293069501d2849e48a5ca3eeefc375fa129dac29ef52c6b8c3def1a44989. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:39:18Z), 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/QZTB32437704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66745b79289eafaa93229aa11fd4c8d7eedaf51b14371c5c4901e29d8863036c. 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/QZZ7R2440290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dac17e0874ef042e24046fa5161dd3d151dc9a4106350e4d0fb6ad3015f66b3. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:04:44Z), 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/QZHNA2514547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb71175660da76f75de7ff5809a5bc285eed91b78eff31cde62c1212af92a7b0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:56Z), 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/QZK6N2542162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a454fc913909a98683cfcda0ea35bbd04f0b1088e6680d9a57e7779179de10. 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/QZK6G2502006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bce43d2e4be94fd54f61b9711746d8b0ea5e05cdd72d33b6e5b95a9a650ab16. 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/NLT2H2100858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc310238fbb170dd593c8853760628cdd6f1067d6d9cf4d8e65283ea5e42561a. 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/NLT2H2300772.