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 0x953ce9f1ed4bb3fea0ab45114f8ca41b87636ee33baa5f43163ced9bb6ff387d. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/580b3af4-f241-42ca-8752-98f5dfc09f66.json and https://artists.proofprofile.net/proofs/artist/580b3af4-f241-42ca-8752-98f5dfc09f66.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Des Canyons aux étoiles..., I/51: Pt. 1, I. Le desert
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 0x5c1f95bf6a46f7696fe36ef0d0db862c65a52397306ce4ebd6c2e8d6bbdb1598. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMB2S2300201.
Des Canyons aux étoiles..., I/51: Pt. 1, II. Les orioles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048afcb565927f1fd81c49bef84c831f455640c317f19879f812211fa7f6a00a. Chain 2 (Bitcoin): anchored in block 960298 (2026-07-30T19:26:00Z), 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/QMB2S2300202.
Des Canyons aux étoiles..., I/51: Pt. 1, III. Ce qui est écrit sur les étoiles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757b8675bde7ffe90483c1f54d82950fc3194ea636cc8b572b19b3cad1348427. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/QMB2S2300203.
Des Canyons aux étoiles..., I/51: Pt. 1, V. Cedar Breaks et le don de crainte
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbb4beaf39afbfb102051295b1c430d43f1bdbc530d4a35f47682c079edd56ad. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMB2S2300205.
Des Canyons aux étoiles..., I/51: Pt. 2, VI. Appel interstellaire
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10de551cac794a79bbffcd917f69170eced7d4a0da25fdc0a5c30fc63d0801f8. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMB2S2300206.
Des Canyons aux étoiles..., I/51: Pt. 2, VII. Bryce Canyon et les rochers rouge-orange
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x766b7e256d40fa00a6a832686f78b50d97f1ea8feef17e74bf9c238eac72b776. 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QMB2S2300207.
Des Canyons aux étoiles..., I/51: Pt. 3, VIII. Les ressuscités et le chant de l'étoile Aldébaran
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a79e9042aea975992f34855f0863dbac9fd699e8601cee8b4f84f13b3f7931. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QMB2S2300208.