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 0x56723bc913a95aad2458ea2edc88c3045a1a2a9b3caaead70f739a467f6d04ae. 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/36514f8f-bdc3-41e1-8319-2c6b88f29541.json and https://artists.proofprofile.net/proofs/artist/36514f8f-bdc3-41e1-8319-2c6b88f29541.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 0x2270da0e4231717ee3910c2bef1f63a92a049f5d74dd8ed9085c4b59f6f9de6f. 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/NLRD52203775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c54090ad51a10c0e79150b16e633da9b641f6b0c9445c40c46cea144ca3fcd. 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/NLRD51632884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a84d27e1df92d117a6465438511db3c31ee810235f343b7beb4f1d08224e904. 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/NLRD51632837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa703e3bfa99f2917477b3ae7be6568781f5df750f00931e472012f30054ba58b. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NLRD51632636.
Numb - Sabrina Claudio vs.TWO LANES Remix
Numb (Sabrina Claudio vs.TWO LANES Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7479235bfc881f58fa91506b9e155b0cbd87e4d0d760f39940ce740ac5ece917. 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/USAT21811532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8d77b63d3dddffdb2667a9ddbe3f9ddcbb0be82c43878f3b147f292d102167. 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/CAN112201080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebda182ba3db6ab030cdb8abe5447e95867004b0d58e65efcf79a0b2c018ef1a. 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/NLRD51632431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25c3092ba51f6111564b331fbab9d0174db8b9d62a5a7b421c672f593b738135. 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/AUUM71900735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20ef023b272ab634ae5a099eb7782031fd3251a5bb1588188c1c9463a127968. 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/NLRD51632836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa703e3bfa99f2917477b3ae7be6568781f5df750f00931e472012f30054ba58b. 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/NLRD51632636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be40ae12e227f614cb89aa34a49c0fdff5c93be57bd2b8843521dc23b083fa4. 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/NLRD52339102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd717d241d8779bb5bfffd32a5971fa74c08ffd7d19a9756d1761a3f759cd6dfb. 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/NLRD51632883.