1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x1d726351db74b1aff7b35cd3b29bedfbe7fa24caf07f16491c280731ec2d913f. 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/d7a69eac-a672-4497-ab49-0f43f874f5a5.json and https://artists.proofprofile.net/proofs/artist/d7a69eac-a672-4497-ab49-0f43f874f5a5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Les Marins D'Iroise (Edition Noël Digipack)
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 → block OTSBitcoinBlock must exist at that height 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 0x8150b6265035673fc01114afb89a840dcf38f069ee4d943812776c1ce1980375. 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/FRUM71101003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ced0f9df8ff71a416d59141f585e44b2ccda328db2e91b06980fe61433999e4. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FRUM71101067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb9d04ae804a9a4f30525c2386c6813118bafe96388ce0d912125beb3b73f4f4. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/FRUM71100888.
De la Terre à la Hune - chants de marins - Keltia Musique
Autour du monde - chants de marins - Keltia Musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94cd6b345d30e853677557a3ce63b74f2cdfe4caffdc1693b10c5ca0701c8b0. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FRY470325805.
Chants de mer et de marins - Keltia Musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23179ba246de627dbc8c11fc75f7ba9bc4035b3555bb10022bdd6e68d26cd925. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:32:33Z), 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/FRY470024720.
D'Iroise et D'ailleurs- Chants de Marins - Keltia Musique
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e427f4a87056eb37d77e2f1aa3a38ed5fa4b8184c44ff02d62b81a68e15b48c. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/FRY479522101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e22a4945616aa007f36d4cfb600bc8d0779dbee78fb3f1842599b002dbcdf42. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:16:28Z), 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/FRY479522104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76422f5228fd361af7fa14f5bec3beb64176ea4878521ee75287e93881e0ea08. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FRY479522108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5058842933b040e66b75540cabd5d39f45643272b7640f88b16de4d591a9a638. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRUM71201372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eeb5cefb3cfd2dcfde7e6699b543f8b02bae813fc6ee702453d0c4fd9ac99fb. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T20:38:50Z), 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/FRUM71201512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f69e61f84d0d40e319bef11f273f1564e263f9a173f63cecbd751cac50044b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX611400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18497d5af157b12f0248d7c87ff2f0d494b4e6394b388d52ca7a84c939fe06fb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FRX611400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa89d7089424a0b9f426317c981a11dedbee1a3c778bc2c0109e3a7d102d9034. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/FRX611400111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba0affe93aa7346a7081049c54d0a9670c769eec89673dda53a55e7ca98272c3. 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/FRX611400114.
Musique celtique: Envie de Bretagne, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e35e64720302fb816211923db1202c1cfc5fb90caae155b6655e455a638b281. 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/FRX611400108.
Musique celtique: Envie de Bretagne, Vol. 2