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 0x7078ab3c1af5bbb66f8d058b299379f2dfef2b29e9c0fa27c48604f73de39f82. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9aa284c7-79eb-4d3f-afa8-e6016c1e80b2.json and https://artists.proofprofile.net/proofs/artist/9aa284c7-79eb-4d3f-afa8-e6016c1e80b2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Desplat: The Shape of Water: I. The Shape of Water
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 0xf38c250dd71052ba9ae8ce622e713c677abbac8695f83c92bc4a5d2708cc439a. 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/GBAYC2000707.
Desplat: The Shape of Water: II. Watching Ruth
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68017a670aa4d84c34c4e07845e0a6cf361b40c30f97a91e69e7d57d02ffb041. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/GBAYC2000708.
Desplat: The Shape of Water: III. Elisa's Theme
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa949af2d225dc72d9f79b0f3df67a03754249a9f93653f71a4e1d3313ed588cb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBAYC2000709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760088870f712a2e9800eb0ae89a3b29e1490abf6580ea2ed0922bef0461b32f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBAYC1902383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88596dcd29192b1edc90ebd4c1c7f9b1f9af40bdc4eba458d74ff5cdce429db4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC1902384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f76f97b4e4486e70e54d72f12037aa111972aeaff39a1f25d62278e0e2a60d1. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBAYC1902386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2763759690de19b507f527a4eeccb99856e635ee39a4e31b2402429374a090. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBAYC1902387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb27fcd3af5c950ed83ba75e8d9044961179533107ba6e3e91450f9203866ceed. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FRZ171001660.
Leone: Six sonates pour la mandoline et basse, Livre I
Sonate No. 2 pour mandoline et basse in G Major, Livre I: I. Cantabile
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaef198f38822fde34a1ba6c46d129fdd54591b3c90fa2db985682246e978413. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRZ171400040.