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 0x092d0b933400ea7cbecb7dd9daa9cc135e3dd015eb05975ed0a4783d72edf1f4. 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/df9b00c8-2abb-469e-b7fa-1456d0b84894.json and https://artists.proofprofile.net/proofs/artist/df9b00c8-2abb-469e-b7fa-1456d0b84894.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 0x1a2088b06ff1225c6c82254e9da47f4edd01b78aeb6ad3f076ec35ebd6aaf78a. 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/BEB682100543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4148beb7eaa59a637abc169b145f2c23580e59f884803773c9558fa53e5348b4. 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/BEB682100491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5301ba434daafc64beae4c011375a3dad5928201e47e37fb246b448da7f2955. 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/BEB682200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4175f8ba3e8d36c1e2a0e0fa7ce8493cf2abf9a367592f9a6ee2ce9b7c00c63c. 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/BEB682100450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e1888962e6dcca796b3de0c4b72f9ecf24a004057ef975cced760d834234a3. 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/BEB682200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f03982460d403420f99c057652e52aacf9a64d493e4887d958f21914336ae5. 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/BEB682200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2088b06ff1225c6c82254e9da47f4edd01b78aeb6ad3f076ec35ebd6aaf78a. 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/BEB682100543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5d4da0250d41815c5e2a88d49a195dc866f4e17a99bc23e1e098e71633f4da. 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/BEB682200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe765df21f531a2665ee8c4adccd4d8bcbc7df10ff10de6cbd3a05dbdaf2c98b0. 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/BEB682200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f33fec6e502432a7e566ff1d211d4479ea7790916d6b3f298e7e21df80e5e8. 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/BEB682200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4976a153e95ec9787153c379400d44e356a6841ea3a68531ffaa9d5ddb9acd. 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/BEB682200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd61a9245eddcbf731bad24709660ae18549391373872c7be46d35b7688c2feb2. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEB682200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5301ba434daafc64beae4c011375a3dad5928201e47e37fb246b448da7f2955. 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/BEB682200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe765df21f531a2665ee8c4adccd4d8bcbc7df10ff10de6cbd3a05dbdaf2c98b0. 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/BEB682200042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4976a153e95ec9787153c379400d44e356a6841ea3a68531ffaa9d5ddb9acd. 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/BEB682200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037d4039ff294c3ab15061d4c03d43f7c2336656b7dd07d257332728ac52dbf1. 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/BEB682100261.