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 0xa0025e209c30ddecaef240e0c9c22f81af00260c0e8a92190cadfd8ce8da99a1. 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/7665d49f-f72f-474b-a33d-3bc971d6c837.json and https://artists.proofprofile.net/proofs/artist/7665d49f-f72f-474b-a33d-3bc971d6c837.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 0xc18674b3c27e6804762f0c8ead7f70c3cd1cc8df9c4c64295a1aa6dd108ebce1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12336846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c7ae67cf88fbef631ed0f06b38e728ee30d30b78d27eecd178ec0f35586dfc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QM2PV1803628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36db5e6fe95313a83ebc94722671db534c095596c731c2ff99af3b52e6e5f32b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZES91845483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431e96d640b2606d2c91a396bad9331da6d1f7927ee21909c65e8b36a524c089. 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/FR9W12431152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc959e49cde0a55e6503e270b7d479fdfa9643af26b3cbb7267c04d29e30ac7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12357495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee9a7430f80f528ffe138a12d9b8f5d6c56e7c720164d4a4da1798fd0d11d62c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12213139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f832723ee4c3df581f34990acf1e8f95c8df15618115224a810ae253c2c5e9c. 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/FR9W12135580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f9e66ad2ec1bb3783cbab5c85134f7054eb16645d8e92204830f485648da72a. 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/FR9W12436660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f832723ee4c3df581f34990acf1e8f95c8df15618115224a810ae253c2c5e9c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12135580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431e96d640b2606d2c91a396bad9331da6d1f7927ee21909c65e8b36a524c089. 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/FR9W12431152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b325462b5a04f905113913c0b769f30ead001c2ff1dc5208a7db294a087b4a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9W12436661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ca4bc38709b9a1f8225bc2e404d7beae7ebf35aed8bad1e1046f43502fd289. 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/FR9W12436662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe483ae94fa6ad179b6ac26d7cdd777e7d7cd5ee7da6b29b0341bd1b71ce2d358. 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/FR9W12436663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fe4eb4de6dff3c3c5c8b7d7a07dfbf08cadd9fd9da64b3a08bcf1835ecf79a. 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/FR9W12436664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa25ee405088d1fc82fe64f0db195f3d33fccb980226dfcb6d876bda2e7402b. 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/FR9W12436665.