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 0xc2b94aca5c921b3cd69d36bca22dc604f00790bc7753cf76d5b57ac057ddde28. 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/b3e0bc3f-6261-4416-910b-b5c9e0b0fcab.json and https://artists.proofprofile.net/proofs/artist/b3e0bc3f-6261-4416-910b-b5c9e0b0fcab.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 0x97dbf22a8de56b2d4231e5679b148888f846a37251bfe731719c50b6d2ee6bcf. 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/TCAHR2361228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2128cdadb46735c90d8d0af771709a3e1153f1942b01b8d62874bc33aa573b. 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/TCAHR2361292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73983d3caaba445e059f3f3120f6415dc42003ddc3be5fc0f4f814316ce150b0. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/TCAHR2361294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a953e153b1d501a761359fea7d253c156d607460de8414c1189ebf6a2ff7e36. 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/TCAHR2361300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86866d4d22865112e09bc8b56a292f0d5b9c915e339ff90d4101891f7022990a. 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/TCAHR2361305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb104addb3581fb640f04418d2a8f64d3c9affc49459b664b6b57b270fe1f1f. 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/TCAHR2361312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd38b3db35d9cd44c532532a342ca98aafa08cdc7ce99432d49014a2d6cf310cf. 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/TCAHR2361318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abdc35b70944b9f401aa8fb683c0550b15738e0e4eea053bd4b67075b4efe53. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCAHR2361321.
Morning of the One Thousand Golds - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ec91b0ef8a13e4caa79ca9bae6cab432936cae541013a150a789287b540919f. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/TCAHR2361324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8c33a5f10bd80bb1987a6d4fdbddae6f4329bf59a1f1965db92862ab3ed625. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/TCAHR2361330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd36d2f01c3b3948a242180696c4f001af1aee20651c3b55a9621296762ff9a. 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/TCAHR2361334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca800e79f08ec8c1d7691e5a4327ebf987b9e053d4788003c04f0a02a92bc4a4. 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/GBSMU9425829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8549a5a2fc88c0d933df0e238a084d3ff52212d43b8f1e632e0b1d1569b7220d. 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/GBSMU9425830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eaa16c5c2870937ade28411133358b925b9c11e455e433a211d5214f4ce360e. 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/GBSMU9425831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fde9ebefdaf8dfff4fb02e23e889c52b32166de665dfc668538e10e58198d5. 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/GBSMU9426153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb7062303041bdc00a6385e024cf9e1801cdd9fb4f351c49862089a1409349e8. 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/GBSMU9426245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf31094d489b1bb82a6b88b7edfd5817fecc89c52b9b4ce1e8c68d06b8313912. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/GBSMU9426290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x072114a5f18bb51beb575faa9551a9b3ab07a3634f2f1dfcafd8f4ff795c6ed7. 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/GBSMU9426310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2aebaf887f8d0c9aa927efaf5cafee0728118b3562a7c1d51f0ca24c41236c. 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/GBSMU9426338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb038ad77d61af17178141975318ab528f1799bf4872936b487bef62e491af130. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/NOEOK2480080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e899af2d3b31f08a450bf57f39e17132c4c1e1391b8006af441696f6b7b181. 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/TCAHY2402700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ce4856c0fcfb10abc6b58b9563a286f60441eb99ccbaee3d8fe0f313726080. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/NOEOK2370021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7732875174ab8102c2bba1ce9cf9e4374e1aa62cb04ee5ffbfba6aec038f6f9. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/NOEOK2370022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ce5009058940aee53298a7dd98459ea68b128a319f519024220312a1067ae4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/TCAFJ2196898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d59becd122af72b46c450cd553fc7ec2a077af61c55f1ce318ee1e8d4e8a411. 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/TCAER2058805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a793148354cf224d007bb19594ebbb00f9501e98578c4963a0f5196f92ee56. 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/TCAER2058809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c7a8baf2b681b28d11b9f0db9612e2d25458b388f133aaeee03c4dd2c0c1aa. 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/QZWFF2439438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x364384ecc5aef8a8621e0747c41fcbabf5a7b557f8d1e8555c9879d6307f9c20. 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/NOEOK2480010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709dbaee0878d26676ecf387350a6677d14d4f6677b0492736bd373b690c409f. 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/NOEOK2480020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee6775ea1704ee583c5fc9e4ab56ecea0b7a2cfc5628856b816d90ca40971ff. 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/NOEOK2480030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd913cc751c8cbc23db4e02241d8d55acb87660c0b55c4321ce2cf869607877d8. 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/NOEOK2480040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ec96cf7d722b00748b6ffeb7dda68feb44b40d3993f62d1c8ede43c90f7a1f. 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/NOEOK2480050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f4c0ebeef090828902e3691e7c4d5ae5fdf3db9c0c98a7e76b791a57b485b1b. 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/NOEOK2480060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c019256036b3d839048df83545346e971030376be7127fde6051a31a5ef14b. 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/NOEOK2480070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb038ad77d61af17178141975318ab528f1799bf4872936b487bef62e491af130. 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/NOEOK2480080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302ee07480890246ea989661bf2be6c750f2e6857243239f2d5d83a78b3d376e. 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/USY252420271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35fd58a4a57fd1d729c05319724cdaa299829634818b3715ced3213b5354880e. 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/USY252420272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee6775ea1704ee583c5fc9e4ab56ecea0b7a2cfc5628856b816d90ca40971ff. 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/NOEOK2480030.