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 0x0ba6379853733cde7b3e77476706b3a424dbe4a362df89187c48c718a33d6e22. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cfc7bb0f-1221-4e85-9207-c31982615f2e.json and https://artists.proofprofile.net/proofs/artist/cfc7bb0f-1221-4e85-9207-c31982615f2e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f4afe301008d28e3e9e18fe065e497a904c73cd7489d1ed39bbb2914098559f. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QT3FE2526613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0377e03a8972205f83f11a1729d2993fc5f86c42cdae193c1efb2bee068aa41e. 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/QT3FE2526830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde267952d75bf2cbe00ade6facb76c763e20f8152070eb81c508c765b9a5246f. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QT3FE2526823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f618548fa28b9f9d9f34599e8ced0942aa19318fd2f4eb8d67bc91257b45b1. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/QT3FE2526776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24ac0dfee90a85053240c47dc8e7452761467eb3fb41792288f12476daf466a. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T22:37:29Z), 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/QT3FE2529525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf31f4756a9bb43f07ac2fbcbf01528819db15a103374b0b6e84a791f4dad45fc. 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/QT3FE2529534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2959558488cf771d174acaa52c9fe6fa9ed8fdc45b11543c74681202801995cb. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QT3FE2526686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6b8923f21c7714e461161f57b8622ee2ab9bedf6633fe40c7e45fb5bac125ba. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:32:56Z), 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/QT3FE2526782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0881e8cf7c6cf76d247ec36d7786b7966a0420be7aab7528b0c0c542ca6cab86. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FE2583168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb590693ecc229fd84297dd18dddcee62d805399ca27a813ee428299ba7d6c70. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:09:12Z), 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/QT3FE2584968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b063741140fec2a47e27b38e6e25eac9ab0f5bdf37b4e7108184cb931d4d5f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FE2587715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8418a3a6e187b77d21498f32cfa3a20a316b951d576ed32f7d125a195445aea1. 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/QT3FE2587400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc347030d0a55c6fe6ca8d15751582b8346cc1a1ed3bfc8a58619eab60cff0502. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QT3FE2584961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477a288bd0aa3e871440aed350dbe7066982ce23993a00fac11c3d794f82c34e. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T14:02:40Z), 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/QT3FE2584956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdd65055d41eca2476d4a6bb309afa5e5710e87c71fc4774427195e80c0cde4. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QT3FE2587511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ca2b8b4da6beb59ea450277361034cd6a205ebc24f75ed032fabbd9fdc5eda. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QT3FE2587717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3844ed979f4b6b09d9973ff9919e340dabcd6a885889b96b0a8deaa7cfa0715. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QT3FF2559865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba283017e1a950c9f1353e17d68946c1c6c2ece9fcf7f8e7aa879517cf64fcd. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT3FF2557205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d3a98421734da8e67461b3abc8776dfa54b1ee22c9979dce25d533e39ecef35. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3FF2557168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00c3a8e9ea305ba5a959ddf608e1211dcf320938e5fe3e9ae93bfae4c217b2f. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QT3FF2557130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089ce2629a4f01fe963cd0ab834bbbd3ba1066cbc6645a7e33b8d2c2c6f9c67d. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QT3FF2557139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe77604d71b1812e9150c36787dc539a00c34cd4b40b50b59d90bc2f2e3797c73. 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/QT3FF2557279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x908457d442459cb22af89403538193fc83ec5cb861cf89cb311bc7aa59d6b1bb. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QT3FF2554486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596d26960ae601d0654ee7695dc1187baf7256419f11d8ea24abf6f9409b4871. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QT3FF2557123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f302c532758a0750d720e9231887aa35b6d7469c2b72dfc4cec25a9ee1a5e99. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:30:16Z), 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/QT3FH2573648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bf02bb54ee28d5cef9f25889b64e42ff289fe4ee9ef004ffcec8ab800853af. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3FH2575526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ef7e4cdc95dce333628fb516fa6f5a733d1fd6a470bb80e50335b420db3f5f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT3FH2578287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f0af17d9c680cd4967c3a13b959e98197b877b48a371d527cf0d1709bc5d72. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QT3FH2578333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf94a1cb1cd0f00a1096a54386826a415c1bf56d20d8da418b749e075f816d08a. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:07:29Z), 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/QT3FH2578276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf72c7110f3a9d0b84e8406c7270616a08786d41ed7e86b175542bb95640b81. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T14:00:32Z), 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/QT3FH2575495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50f20612ab63c3295c7ab638d4db716423a02b7f84fc4f19f71e632ba71589e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT6E62570917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ad69b1dc0ec8b3d223f23e52ce85742575fe24a52ed98ebecbd7be42352978. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:02:50Z), 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/QT6E62549525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ae3a81b46ed082f9a72e0605186404dcd471e5846a3df684314a8c6c668e79e. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QT6E62544732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d654a653c64dad851875afdedbaf34f2787b21920ecc4b4520e27f45f8decd. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT6E62549471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23ff743c01096afa46a69267e0a31ee5d353dc168e88eee7f3fc7a5482092a5a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QT6E62566647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d06e2caf1b3330d7a2267012a3f4d4bfa708c99fd929eecad4618eedfb1ca4. 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/QT6E62549474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf69c092d5e6b1cfc4e95dc0bc49cadb38bc48c68df0be3905ec437277191907. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QT6E62549475.