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 0x86951205c2aa11c48d780814156439c4e4d6dc979c8c712f7d3e83eb58793dba. Chain 2 (Bitcoin): anchored in block 954533 (2026-06-20T08:57:02Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a51bfd89-6da7-4724-91e1-c3d8406a35c2.json and https://artists.proofprofile.net/proofs/artist/a51bfd89-6da7-4724-91e1-c3d8406a35c2.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
Scheherazade, Op. 35: I. The Sea and Sinbad's Ship
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 0x079c980ec387c3cdc8a7365940b1fecefa0d133815f27cc32c200f3a6e326678. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMEU31412307 — a six-check JSON result.
Scheherazade, Op. 35: II. The Legend of the Kalendar Prince
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd24f2d39ea0fb5de505c26ff4e9f03cbb1f14d31a94e32288cad3d4c76a173. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMEU31412308 — a six-check JSON result.
Scheherazade, Op. 35: III. The Young Prince and the Young Princess
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9c9dba16669228d8af449c0eaabb0f011044eb433ee5e06b2500d4f7aea247. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMEU31412309 — a six-check JSON result.
Scheherazade, Op. 35: IV. Festival at Baghdad - The Sea - The Ship Breaks Upon a Cliff Surmounted by a Bronze Horseman
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97485a7afd919ce9437d915e4344c33a8b4557f26af097b0749f539710d855e0. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMEU31412310 — a six-check JSON result.