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 0x20293cbf8bd07181a8aede2a20335f73d5f6bd8ded42def159276c5348b9373f. 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/d021654a-3269-4397-8efc-3163f6bb52c2.json and https://artists.proofprofile.net/proofs/artist/d021654a-3269-4397-8efc-3163f6bb52c2.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 0x40fcf5436a4ceaa88897abdc16f594f3dcadc708fae26da3dc2eea289f76e827. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR9W11413359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d86f5fa5809f07b08739585edc45c6a720e28d41546668c6012e8e56bd0fb. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/FR5K91101030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3792ece3f832b42fae44c8211983179a168107096b410dadcf3f5c9f04ee67c7. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR9W11823586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9d9873b71cc32b650939b78497018a5aab2c95492403c21e05751b0f6d6fab. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/FR9W11823587.
Paysages de notre destin (Live Symphonic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1f239eb88899cd2a2fff4116523e1fd9f00287f3b885318b8e7342c057b8a0. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/FR9W12030177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc8b56c35419ad6a7eafde8f0962c7587c3cd685d5910e31bc570e600155f7d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FR9W12242922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f86503d741e0de39f3c1e2080b6d44cd662ce2a8f89b206a6627cdd1b431f7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FR9W12242923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d116fc71a537c313b3a2a5769c936564f563d215b6336c37dcf76bfe510f26. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR9W12242924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9d0644330b77d87b1dd0b13b731338cb1aa9ee7e5b7d89a834b072b71374e2. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/FR9W12242925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3155b8a14778c6e1c1abf864a8731ad30b6b2fe2f0bacfd45677aff05c74789. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/FR9W12242926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024013182fbdae493feb3386456f666e1971a878df92fcb80f150b84027d55a9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/FR9W12242927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4191eaa375aecf298e4eadbd0687fc251684709ac9e95d5ac10c70877959a2c2. 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/FR9W12242929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a7958e36e5477298b34744d3d57c20c1ba2a15de248ccd30d43d196b3892cd. 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/FR9W12505243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0f949797db3f03bb97c0efcb5b5bed90df5d8ead72ab668295ced396f611ed2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12505228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afe2642778a644ac66ce12b6b2d8bff20f834c6f20d6b63a9c73222437d4475. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W12505241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d51401a377d39dcd4621d2b8e4f9f4740d04b7c20520ae7048557b7e6a4002. 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/FR9W12505242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7a7958e36e5477298b34744d3d57c20c1ba2a15de248ccd30d43d196b3892cd. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12505243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dcb2194ee8b8615f105a680525c5fe1c3750014fdff6236f19e8000f7032d2. 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/FR9W12505244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x130d2698b7529641af89e7bbbea8257b9c41b2fa6ff4e452834c1c947387a782. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR9W12505245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074cc509504992cbb680a9260ff121527d35eee577c3567692a59e818d5c6c06. 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/FR9W12505246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed109b53d6afd0c9494e933ee1cbddee739a10ac57b033e34b8bc260d284030. 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/FR9W12505247.