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 0xfcedc95725f7fd441c0939a20e99aea9a2b47872b455211cafde7a5cf6412de1. 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/beb30499-361f-4508-90e3-28d8f13bcd5b.json and https://artists.proofprofile.net/proofs/artist/beb30499-361f-4508-90e3-28d8f13bcd5b.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 0x437ad3737d3cc980dfcfe70feff490e6314b21770f4e8b630c33f7b3216528b9. 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/USDXS2302228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd47bf5ecc53e30040bbd1297ce859b068e852b0aba14310edf35863007ca3aec. 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/USA2P2358699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4efce2d35e45a221b0e465b90f6e08c94fcec5bd50323e9aa69177c919d5ed97. 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/QM4TW2433504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb79d866990014fb8e475f616c74bfa8f7bdfa4b347f645952270697e775e901. 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/MXUM72302450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2af0dd6f35709cd528ae9d7eade7f3527e75d331c7aa44a46941eaf77a212b. 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/BK4DA2413340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd92c2cafb2ef8fe220744d90f5cadaff6473c7eb580848a6810a5d2a302b1b. 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/USA2P2437292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca2191f1fe78b7b3cddc7c23c43966263ab6cba213cf49110b17a62c8d46cac. 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/QZTAU2148946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3045f9191134551085cb34eda75187e81018bf4dd8762c6ac390d16c9384ee. 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/QZTAU2148949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd10f7f6a5e743f9a2099d0e3d51fa33c99d4d9b2444ec4c037538f1460597c3. 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/USUM72414471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6f7a2c232be426a497ea9c93ab4748da53ca5d6043189bf67ee6383053565fc. 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/MXUM72500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73215fc03aaa1246b95ea62d22d18764d9e08a30d7fcbd59759ce8985e7de418. 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/MXUM72500211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3128a4094224242edff8da5471df63ffa79de54a3536ef79650b5a6c2a9b5e40. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TX2451168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd95b2d63d188d6633b16d7a560c726edf3af1088b77337dd5ea06f8c7b7a4242. 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/QZDQH2424495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b0e82050f869783a9b22c86bd84bc0fa4b62375ef643bae96caaf2aa90ffdee. 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/MXUM72400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d7775022439448f928d512c629d06e6b9093f3a60cce0d2f3d9d87de6fa70e1. 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/MXUM72401843.