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 0x848eca88147e4711dc3a1b53227e313a174f9e0f2e8be12d1e6bc1fda879afb3. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3bdb69b5-ad21-435c-8b4e-b482cfba895d.json and https://artists.proofprofile.net/proofs/artist/3bdb69b5-ad21-435c-8b4e-b482cfba895d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Années 80 Forever, Vol. 1 (Le meilleur des tubes)
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 0x3505f131c3b766333f4649d97e9a7c732580b61a34daafa572814692514af46d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FR0W69925633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978060b755800ea54a80a033c0f2a35807974b80c5927ee8341a6c6b5c3ca0e2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR0W69925639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae054e6582b0e4429b8674d10f562fa026962dd16c5000ebc36d50444ca41b4. 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/FRY510781283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5d783164f90b97a707be08f85a316cff3c9543c2552027596031b993a9fb86. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR0W69925661.
Années 80 Forever, Vol. 2 (Le meilleur des tubes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbad975950d514afa89915f9905689730052a88806e82b0b47145c229ec019152. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/FRY510781293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139f4626f3868ea2d0bc92c5d8f93019704ecfaf6dc4c6317fb31fee05276c61. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/FR0W69925767.
Années 80 Forever, Vol. 3 (Le meilleur des tubes)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4cd7e11220431249d70e94cdd3e66ebf34ec6878e7fe6e42b7a95e2d709207. 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/FRY510882433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb37ee019c8432f8653cbfaf64cf2d1f56b28bfd7a68c3c934f9650a203cc712. 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/FRY510989973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc57a6770f1941339d1b2a0b6075580ba192897826b9cb6a8460d5ae79f019bc0. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/FRY510989697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50924aa8544a705b40401d56633228d6c283c2b49620147ec183e1fa0184895. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/FR0W69925900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f1a445e0f4c09740f5c41bf96fe629d6b2744e10000bd54f6c8f5221fd5b18. 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/FR0W61971157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x536807b3ac87cc9935c3ee69729f19f941154bfdc885a4a4e74ed1d2e2a650e2. 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/FR0W61971161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cdf8f1e76909fd95da8f2f67b2e7b660087e8a467f284aa7fa6735daec51992. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0W61971162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ab127189310cfe6c530db8e66bd2c15e1eec2384f7ff8c9aa6f050e9c715da. 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/FR0W61971163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504dd45c4bd5213b153a34f2e6b1b9afa79f0b4108e6fb8bf90c5d5a87b95a53. 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/FR0W61971168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4273107b16d13035ca1392bb7aff7ecdbfc589a093dcdae9529d9dfcd6295263. 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/FR0W61971170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76a6f1c9d56c025459d94cf47500c8cceeaa52bcb21516fbd540d7a3860e752. 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/FR0W61971173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b54c06a9a056f8edfeedd21c14948b3d35f912aafa9566b67662b927cb5af5. 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/FR0W61971177.