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 0xa469c4d35c11070a79351edc1e559335ef93288d89dacc85746233dab40c31b8. 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/ef75613f-91a7-45e6-8980-7e07e8cdff51.json and https://artists.proofprofile.net/proofs/artist/ef75613f-91a7-45e6-8980-7e07e8cdff51.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 0x1408e7eff5952f71a608d8becb589243c48e745b897631ce52c02b9fbba44fdb. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/USCGJ0883675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f1007b0901a0b856434db1b771b137a90601d538dfd0257571baf4adcb5434. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:01:22Z), 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/USCGJ1401054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b0df3a6e17a2ee45fe4890031f3ffba2557741038fb280308c82a598148ece0. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/USCGJ1401058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c4e9e8a6342e02a4c3b776e39b98ed220a8c1e8252b8ae1dd306c1aa72e23b. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:41:00Z), 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/USCGJ1401059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9abbe4d1cad2191e8c7cdc9a01c6635f3e28721de4f7c5f6a9b472608cf8c0. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USCGJ1401060.
Arrival at the Monastery (From "The Plateau of Singing Bells")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2add807cb6d1e17896dfc58a354a172a7614687a73d3c9a0b2b155e8a01201a9. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:34:20Z), 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/USCGH1852597.
Joyous Encounters of the Alien Variety (From "Travels to a Deep Sea Garden")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e620dbb2fb30dee4f4ecedd2afd03bef8b035d50b4a54743174f6f125672ebf. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:00:53Z), 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/USCGH1852609.
Mystic Nebula of Ageless Being (From "The Neptune Mission")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd52e4d55e63b3ecb7b340d55caecd17f524de3ce99f13ee53e1c1dfe1c6d237. Chain 2 (Bitcoin): anchored in block 957744 (2026-07-12T19:15:44Z), 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/USCGH1852611.