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 0xca39188fff88f0690b1c86617911b4a6663edf3ab144908473ab0c76fd59ab40. 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/cec8b132-ecd7-4ca4-a9bc-93bddf3def3b.json and https://artists.proofprofile.net/proofs/artist/cec8b132-ecd7-4ca4-a9bc-93bddf3def3b.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 0x0e8451082b21c2f3a5aa9cb1d57bf31db431ee6cdec23f1ba34b81d7b05e6ac8. 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/NLRD52304171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08b14c74fa7cdb3ee63bf265bb24d3b9c1a84038e4d7b8b989fd4e6bd599d597. 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/NLRD52119569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ed154ae700a17673e0b5f6eb6b59bb75ac634aa1f08d5670b80baa8c3903ba. 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/GBKQU2293198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14b9dd3e23556f0b67a7dadaaf3e23bae33f969a6582ac069bc0c7b5d11ead4. 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/GBKQU2278094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d740b7ab130c7de79d921117a9b9bbb550b99a187cb066621d9a88d0c9c4db8. 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/GBKQU2250512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21ed40499416657e0b64d985f10ac1fa53b85885a293f67c4a5505ab167c08a. 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/US83Z2210924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e17c831249291010dba54bf28596acf45af7ebd2ad3069b59952f6adbfb2ea. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/GBKQU2221059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4d905dc3b279930cb00422c54671cd4b22b37434fa23cce9979c6872f5c9ca. 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/GBKQU2124142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3b4b101aadd4313bee0fa4969a017bdf45874f5880f00654ef149d468c06dd. 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/DEKC42000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x799abd6e13b32301412e85a94bf6b87053edb36c08127c864c5215c0a74cfa77. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBKQU2051097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71c8ea9481fbd7ea6aabc092b078dc891b494fa80bf59245fbd1daf58ebb7b6b. 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/QZJRB1920119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa239cbcca7ca99ad6e2d47fb846821f6641fb1e919f61d4afeaa91af8a59a3. 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/QZJRC1958671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68cd9e0aeb7d9cecf32056449d09c9582ea7dcac8ca88f2d500c746da8f6d536. 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/GBLV62006646.