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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa12393f74960f860bf21e8d2de421fd6e98ac39b5d36ec54d8cec128aba6f2e9. 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/64e76a0a-217b-4f7e-a763-e2c33d1d6fbd.json and https://artists.proofprofile.net/proofs/artist/64e76a0a-217b-4f7e-a763-e2c33d1d6fbd.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
La famille Madrigal - De "Encanto: La fantastique famille Madrigal"/Bande Originale Française du Film
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d73582e773d0f923e3d65e13ef851b2e17e937c98706c27ec26452e2aec6c1e. 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/USWD12113105.
Encanto: La fantastique famille Madrigal (Bande Originale Française du Film)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d73582e773d0f923e3d65e13ef851b2e17e937c98706c27ec26452e2aec6c1e. 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/USWD12113105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x466274a6b57eac4374ee94cc9337f2ab66a3518bfd9a56253e41022649a553c9. 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/USWD12113106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1e1813296647c439b0c68beb7a79aaccd51d8ca552dbb410ae82af2117033c. 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/USWD12113108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e5dffd5c712cb687f3aae266084c35ef35f1b8277f927736e6a943b7c4ee76. 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/USWD12113110.
Ne parlons pas de Bruno - De "Encanto: La fantastique famille Madrigal"/Bande Originale Française du Film
We Don’t Talk About Bruno (From "Encanto")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e1e1813296647c439b0c68beb7a79aaccd51d8ca552dbb410ae82af2117033c. 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/USWD12113108.