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 0x9f4c381360fd702ec972abe16dd154d58a47084748ad5d0f971b4d75f1cc384a. 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/c2d23257-8de2-4d7d-8ec7-a6f185d9897f.json and https://artists.proofprofile.net/proofs/artist/c2d23257-8de2-4d7d-8ec7-a6f185d9897f.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 0x43c617ec5f03ce7f306b9549ad955052e8d3e55c7db96d7108769445d050af00. 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/USA2P2226459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d6b54c7ffdfe708930818910aa740da2a8dab12911a3b708ae43d81ac8d88f2. 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/USA2P2226450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c5d6ace287fa4aeb8c36f109cae2e04b3960a1b415518eb83817e63a6a0c35. 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/USA2P2226451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1a0741c704971fc1dbf0c7123c3fbec1724c44001b6406e5b8c45c56d48b937. 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/USA2P2207911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e8b74d2882e730245f45723132c95574249138f533a7b78e269ed88bd5fb17. 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/USA2P2226457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373a5fe6c5e010e93aa7db55ee4b24bc997af872a9d35868e1237b5efbc2cc91. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2122573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99812de12776f721fb4d58369b72d27aa5e42870cc44ab253add0eb47bfff143. 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/TCAFK2132111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffc08f545ef33912fdb15fc37b37402cd1ffe12fdddfa7088179204cc0a4b96. 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/USA2P2134011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa47dcb354788d9954dc382c7bffe6d75af845560165908830626309a6151c4. 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/USA2P2226454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x663bc4b35c85d184d96b2e13046f2431db7d454191c05d96b10b5cfc38c57741. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2226453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0681be4c0bc45fb55fe18094f56ddc54156e02d894db4f7babca59e4587cc1bd. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2226458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b32bc8ced238fd31ff0cfd59adf697e5e4f4793182b901030a8fe051be91f0. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2226456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffc08f545ef33912fdb15fc37b37402cd1ffe12fdddfa7088179204cc0a4b96. 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/USA2P2134011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c25b3a1f1a8ae292d3f2236bfbe1cec0d1c3bdb64f947259ebf0964739798c. 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/USA2P2314986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4999b6c39a1b3a5b72a82fe2c0d99a0c6f9a44a185d258ebadb8d6d05546190d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2314978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8fe96ab60828f0977cbed92303d1c4b5703de4772166e79c19f0d50cc917beb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2314983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8f804b0518071fd4eecb748a6470e6577084d4edad5fdbcdc37e15601a28f6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2314982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85d800688b9c2f1a4a6d8425312d65edaed6a75b6ddf74218a2ece012c07345. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2314984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db3ed985db66a73eb4413ff30247f1604d7f99137c318fbd2d31b57a6c3d02f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USA2P2314976.