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 0x62595fd871b5c892394f512f2144875dead304b9ab52936f0849488e85f2ec29. 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/a42798db-4535-4a87-9410-020474162b24.json and https://artists.proofprofile.net/proofs/artist/a42798db-4535-4a87-9410-020474162b24.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 0x11a5eda844ba7f3c6f223fdb18381b9752fdde39ee9fe396e9d3e1e30cd3ef63. 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/USLD91749372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e8a2672f0357332184b11fcb61becec33bda76c8c18d22b6c2129dad10bd5a. 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/USLD91749365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f482b0501ed1cf593f116ceee41ef2a1ee72190ad6315333b94f1aa13df7ebd. 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/USLD91749373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ea2d15e0947ad57da20045a751c29e45b8491e2b16b75cb40003653848e432. 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/USLD91749366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a2afde7693698d6eb9e04d32751d8ff11518993f8addac2c5850801dd5178a. 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/USLD91749367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc3260dd75cd56ac751c1178ee80adc37b20b5815bf0920745deed7fa2216c0. 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/USLD91745541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97af46632176fe5c0f2f043ed3e004cb26ab9be19b0cd5ac8585689dd99e8270. 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/USLD91749368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd916e1ac982367823b5d36f77462b0dea4d00f8a0198601c60e36f1293cb3dd0. 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/USLD91749369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a2afde7693698d6eb9e04d32751d8ff11518993f8addac2c5850801dd5178a. 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/USLD91749367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc3260dd75cd56ac751c1178ee80adc37b20b5815bf0920745deed7fa2216c0. 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/USLD91745541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc6b55d6d60a1562537a2cd9ba3483f6a51314c69ccc5bef9df4f6ee184425f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USLD91754327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb19b29f7200a61a6ba91772d6d65ac9db4838423b59a188769da27db67ed67. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:03:55Z), 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/AR8TN2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb721206c6993ce4fc52ff8863de872e17ccd5c3053dc1501551792420b519d3a. 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/USLD91743895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0a5befadeb822871542b4465cde60027a5d8c8a8093ce7a4f679f72a80d44d. 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/USLD91743896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec5e8f25a7e7ba005454cc943bf8afa5129e8b8979a071caa12bb143ad1c320. 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/USLD91743898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa179da8896d9fc204bdcd310a6d8b713991b496450a1c6835d09a7f603ed57d3. 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/AR8TN2200384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc55129dad399feb1ef7734a6c150fb61c616957488b892fa80e129c18d1d0d2. 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/AR8TN2200385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a9d05290db56d467221adafe3ae24374f9143b59b5a4d83749fb05ec77c144b. 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/AR8TN2200387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046b920e099bbfd5e6288fbf5b77e97e14513ffafb8d5c23208a57c00fe42e7a. 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/AR8TN2200390.