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 0x514d7b2af59a5ff64ac6c89c96300e2f7a46af54b5a1caee0e4e05eb03b30008. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fcaaf3c1-29ac-4e64-a607-34c04cc9ff0a.json and https://artists.proofprofile.net/proofs/artist/fcaaf3c1-29ac-4e64-a607-34c04cc9ff0a.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 0xb4c1929daa36c1d3d5c358388a377eafca92fb5cdc65857a6e18459347deaaeb. 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/DEGC62202773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9432f31240a01a1a8f0b01a752fc8d30cbd08c89026f5c6e6400243a6062e05b. 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/DEGC62202774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728acb4cf3a356c5b389bafd840d6be4d53c32928d05a41bf462bf142c7930ea. 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/DEGC62202775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf873040333c9e2e1f8ac71b7d136cdf9b6197ce59190d22d5cc15e87718d9792. 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/DEGC62202776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc21a8eeaf1e7ba04c3fe01f9c6bcd19175a593c18829d9f917fe6688ed3b865. 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/DEGC62202777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb51a29f6b8b2844de43b2eeab0272ed5b7010c6219d7c2f980526fe3f53fc8e. 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/DEGC62202778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7fca41f4dfd82f60c3bb38c738b4d99b4a191336f2bdf9da577b8177fbc3940. 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/DEGC62202779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a4e54343d8f25b79dc4f81f49fe50088be429193296202a403606c234353d6. 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/DEGC62202780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7daaf65c97c66dbe4dc0d84c085f74fde6da5af30c19ffaebf3fc1dc7a08120e. 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/DEGC62202781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d345f0af67f0359a617a59921cfc7a49e2124c53cd5138f7352a68db31f963. 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/DEGC62202782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd28147c13c058a719137f98002d81330af8973172c8eed1989229d0358363baf. 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/DEGC62202783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0e660b44fca55ef1c3e92be6b5d6358ea824e00ae54a17867ed017ed9d49cc. 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/DEGC62202784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893c5980e3145ac28578ea176174be48500c56d56a70c7e2f14f593468b4fae8. 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/DEGC62302876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d345f0af67f0359a617a59921cfc7a49e2124c53cd5138f7352a68db31f963. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEGC62202782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9432f31240a01a1a8f0b01a752fc8d30cbd08c89026f5c6e6400243a6062e05b. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEGC62202774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x728acb4cf3a356c5b389bafd840d6be4d53c32928d05a41bf462bf142c7930ea. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DEGC62202775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb51a29f6b8b2844de43b2eeab0272ed5b7010c6219d7c2f980526fe3f53fc8e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:10:05Z), 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/DEGC62202778.