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 0xf7d9f6728f03ed601cd6b437c3f632eb8db147b03b096b6ef4ecd332a08f26b6. 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/d8da5097-d4fb-433a-a72e-cbc970c79b80.json and https://artists.proofprofile.net/proofs/artist/d8da5097-d4fb-433a-a72e-cbc970c79b80.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 0x1da0d8b240606f2388feac524f5d4117fdd1842ffdaa705e89f5d4d295fb3811. 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/JPR292100297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c93d93574d6f4555d527056c10c9ff4a5b197ec9f9d36f25ce943b07a63e17. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/JPR292100298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93309e14431d60acad4c1562d23ca337fb8850f4c8649165b9287cbb2654e90d. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/JPR292100299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1610949781d21585dffcda64be35333b28abaa4a7b2677b34e25b0ebd0d0ff. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPR292100300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bfe5e7857aa87bc464022a609d0d52d2ed77d53a20891c15667d3fd5f75db73. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JPR292100301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbf3232d839f80d261be09591397fac6fc8bdfca8d7c46c75407b9ca0bce03b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/JPR292100302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e1f34d94be64b0f8b906ad3d330dacdcab98cc99f4f667276df2d3fd9a4c76. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPR292100329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6801b843f6ed5490bd6409d2c960b9cfa963967b5b311b6049c87853cfe6e2f4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPR292100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7539d634e4e109666e752ac50925db188a59425b266f96869332e10430a149b5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/JPR292100332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d13e1721d49c9a2288ec14bdf49b47635f1888cc024787153beeeae8c74e1c0. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:53:55Z), 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/JPR292100333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f946d1c698ccf67447b285485175370841cb570a95e10e399e3c88fba602c92. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/JPR292100334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b837747c6f2f61434218baa13970cdde0253b1b91e0c4e30d2b62baff5cd05. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/JPR292100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6019115c180dec8e1a9d6d4f68584bd89cffb55bde74cc41ad1c97771d91e9. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/JPR292100337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ddf53a11d01705694ce8d4e51786b886bc0972ea3ecb1c54380f7807570b6c. 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/JPR292100338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709083d38de2f99df5c80fa72c1d657772b1992eeb7a43c66136325bc68c7bc1. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/JPR292100339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536c7eb220d8a9333206ef9a0fe2d1c93ab1944e274b7f75c0676a0d2a99207d. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:21:22Z), 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/JPR292100340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8fd526c417f13f8135ac466f8345ef47c4f2c459fb06e0a7d931f8537e7e1b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPR292200165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f9c5c70a962a519fe4b08421f316877e3a9e472ef40e1bdf8efda81e0a8d41. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:45:55Z), 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/JPR292200167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8886956f39c3072b43525b09a929e2135e8016ab964ffb12ebde7aa482646d. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/JPR292200168.