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 0x5d41998301222b9ac4ae246d95893f0f36a786430f05379822442c0cdc740d4d. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/881ca671-2ae4-4cc8-b2c9-0e36dc599f42.json and https://artists.proofprofile.net/proofs/artist/881ca671-2ae4-4cc8-b2c9-0e36dc599f42.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 0x19520568bac690202b429f487b498a9c987f45b5ddf66a49104d99d06ba2b09a. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBLFP2506548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6040113f1f8247a1ce2dd01b7ae99c7b59249250c0af4f0658b1aa6ca171492d. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:02:47Z), 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/GBLFP2506549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09e06e90464a2d4a4ada32d03bf56be48cffa6cc32c0c36229e66ecee712a70. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GBLFP2506550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2aa74c7082a00624b512b65d74772a4a1503ab1848d444194bad54b8f0b1e27. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-19T23:48:52Z), 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/GBLFP2506552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c8286f166151cabf9f036f54e0a63915a41b8578df714fac924c42c1962d46. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBLFP2506553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b82c6843eb848cd6301b2fef152bf99e7491d99ea62af5dc28cb839551157d. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/GBLFP2506554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9c08434d8f1f0bc9be67dc3176b0196d606309b316b7233137aceea68b8a28. 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/GBLFP2506555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c712a0d04c0776752b904b4e06a1fb6692ca8247ca11d458f5b33379ed394a5. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/GBLFP2506556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98882583e26b622fd1bb9cff268e56a9662d2f4421bd8dc11b126af1e2a1e5ed. 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/GBLFP2506557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2284cbf6571ad5be8a8222a002e9a74749e721c2097ba90386a8f3af65d32612. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBLFP2506558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217618f3a53029b234a73ab688abc7fa221fa98698610a6be03a7e8618948069. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/GBLFP2506559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e13619a034ca2999ef5ece9ec690858e3b6b7279011fa48649f035c5ac386c. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/GBLFP2506560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361c3b7d243ffffe71d12098d34b70ae0987826be9aafdce797d9fc75921ca1a. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T04:59:27Z), 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/GBLFP2506561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0724abb1fe9f091d95197ba581c22ae4c5e98319a9bad9fa44058eb2d33dcd. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBLFP2506562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4689f7d855c2eb4355496ed1e2842117e551482ded513f5e552836c04decc1b9. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/GBLFP2506563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab5b0707c70edb4ad8fc13634f27ac7455a90d9b44e0cc95f7069ab378ad914. 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/GBLFP2506564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cf31097e6df5f6b4b2d839331138e883c6630c1148ec3d066b48904515eaf3. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/GBLFP2506565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5c9e4e072754176ce1856379f3cc7a1d55bd592b4c2e06013a2facc68add22. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:25Z), 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/GBLFP2506566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b44d28f5c795b296ac99c94c616ef0b853b610096ca0fd5d98f635612e53088. 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/GBLFP2506567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb74e3cec15753cda4fc3cc71d56c628d21ba9e7e81f71e4a966e6fbd1ba0d20. 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/GBLFP2506568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa01e77146f5731916b045be984a3c4863b03f0e6b2179a9d29edb277433749. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:50:20Z), 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/GBLFP2506569.