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 0x822bc3d6c8912838065d959167a67da969f74f56b1181594efdcf30000e6498b. 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/3c4236f1-2a76-40eb-90a6-85ba39d1dbb8.json and https://artists.proofprofile.net/proofs/artist/3c4236f1-2a76-40eb-90a6-85ba39d1dbb8.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 0xe50e23cdf6115b97dca331b5f147f559a5c5cec7b2e60e10c4dcd8b0f98e1425. 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/FR96X1824553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eacaff6eefb967b4c4e868f3833bec0968e18ae0d48be2df8d9bb3cb02e2632. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX201842843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bd715c8a994c6ecd429571bc53d6c78e7bb7fb2e373ad36e0bbe1880528473. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:21:09Z), 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/FRX201842845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf13a01ac21eb4bf403f165d92369dac8876c34e570a1bcafe48ef3bceb77ee24. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FRX201842848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d45e3fa9cb4f29793cabc599ba7719f7bcb8467e34e5e1d629b32a4770cba70. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/FRX201842850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21d7a626fdab71110573196357a9205f8374227cd5bff158f47999bf8aa6dcc6. 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/FRX201842852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccafafd24f2c4f7031f62724f41bc97da369b22bea0df19d8e6669197084d69. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/DGA072174183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0741a9e56a9e50c6a8866f9be6bd9c05b6513260cde171c38d90917d4b6e9f64. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/FR96X2157433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ccafafd24f2c4f7031f62724f41bc97da369b22bea0df19d8e6669197084d69. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DGA072174183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffac84dbcf2b8240797d59cbc1b6a32c976afa4a3096ac524eb8dcbc1157b68. Chain 2 (Bitcoin): anchored in block 957611 (2026-07-11T21:33:50Z), 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/FRX872104456.