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 0xa2a76a2aa2ed33ee31f4492aeec20e189eb2397af9628dbd92fad236ddf0439c. 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/4683c901-cda8-4256-be9b-952f9987dcb8.json and https://artists.proofprofile.net/proofs/artist/4683c901-cda8-4256-be9b-952f9987dcb8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
I Still Haven't Found What I'm Looking For
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 0x02dd89787cbb7899356bfe36b45fda9d9c4e65255ccfc48a3d04221bdfd896d1. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:43:39Z), 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/CAGFY1800021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ffa8c88806f8036421b4107a9167b4c854ab123e127b9034d9f19e89094c6e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAGFY1800025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefaac842a2c868abad984ad0cc97e20daef08a921d81d473251c37bbd28fa9d2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/CAGFY1800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe3b95095e84210b09ad4d2c1371550ef042622dba964f8276c5fac2da06ff3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAGFY1800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x889e06447241ebe252ecda67c3f127bc247e0adb104a9109584cbeb7d4dc4551. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/CAGFY1800028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0305445868e3a769ad12b775d4a99fc77a1dbe050e45075557474f2050bc05. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZK6Q1916286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ccdf6e81b8ba795b8d38d4dfc6f668cb15150a4ce320935342bdfdb79bc8c85. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/CAGFY1800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5bb47e2d9b2d593771e6410d9cb90d49c1e03a7993bdb252cf695cfbe38b2a. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DGA0L2449734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ae80d9ca90ba3231d4abbc2ad841ef6cd7cd2bf25ba2ceaf5355c09f898496. 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/CAH681900111.