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 0x1c3b551589934e89b83d1619b05ddcbd4efd0167b9a901ebc657d2ae702e5083. 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/3ea78cb1-a580-4d5f-b3db-ca1272c90e40.json and https://artists.proofprofile.net/proofs/artist/3ea78cb1-a580-4d5f-b3db-ca1272c90e40.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 0x95bb3c73a4f194d460fb69e52607a4c1a9bcec270913d1b9e84bc0f5905d7075. 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/US3X51737801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce9f78dcb887ab8424be5376f308f34af8564795e16b404b2e5f1fe3f7f56e0. 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/US3X51737802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dc99809d343db09bfd7fcf09e1d1790080786b3eb6ed876f04d56dfb605c8c. 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/US3X51737803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4694b94dc2eecbf13a40d59573a452b1cf31aa342c39512ccfb2fb9a471f5c60. 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/US3X51737804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb119c821babad4b70490f92f95c916778c953f6ca488ad656ad030b33d250d72. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US3X51737805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x709378cf3c780c6721a84e87d708ac47a77fa493c4acbfbc9c23e1e7139012f9. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US3X51737806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76c694f9765ab67bdc744139d59c3889bf7a591e21565a14d10aa540076e782c. 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/US3X51737807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654a26702463b7b071c2adc63223fadd842012536deb1d42d1977a6ba64d2d18. 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/US3X51737808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe75d7564376a0b5fc4bd0e2abc8bcde8893d9268e2215935c8d07410a55eb6c. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/US3X51737809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366dcfbd549717797d8631e553f77b93ab34c8f363c8d87ca844f2cbd0393e2d. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US3X51737810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67269f504d5845eb5baf9224a7a55bede123d07cfa237becd5cb6934e2609824. 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/USHM91463637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12596b49fb1db7e2787a0d40366dca6877cccf58a02b013f62396a12f8c4ad3e. 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/USHM91463638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7984e22e94f9abd9828fc6a6649fdc5988cf5d0d22f58e581ffc7000b2518a. 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/USHM91463639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f04ae3d399286efc4cd8509a009b1085aad41f448f6ac52ac34d01acbdeedec. 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/USHM91463640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb0599c19a0b8d9ee9ce4e4fa0f45d33376288c6dffe0fc8786f471f8b94f390. 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/USHM91463641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fb10a5d05af36fbeb0a6eaa3e4af42fa1b0ed99ea66e2cdd14ec60d6a925c4. 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/USHM91463642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd436359fe217a743026aa0de73e9a98b55259fb4dd8f4df03bae5abadd0fe258. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM91463643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9663c00d54c6960c59d73c087155d83035bcee46a350d83fe3d29dd8c852dd4f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/USHM91463644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd47eb532ed369255269d5f14f5fc6a7be254ed30561619a8640b51a4e0caebb. 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/USHM91463645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedebdefa6bb23c4721ba0eacec8f5068f481597d5f0d47d8647baef385afe67. 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/USHM91463646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa28b95b82b4d9231dea26e3f850e5d91fb9d4669ce61482162407d8ba8fbf569. 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/USCGH1393163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3641537e2943102fd9e3e80f7cec972e4b4b7783d2a26b660b57a42619132b4c. 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/USCGH1393164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe828bb21765c5069cb3e29bdc6a28cc8644bd187dd911595d9a465607ad9382a. 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/USCGH1393165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc003abe25fdf7ceea78cf7bac0f20fd34d47167717a6076a6c14ee6de3a331. 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/USCGH1393166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5584cabb699bf4431d668460a4b9443b471afac1fef0ea8c71c3da44dd6973. 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/USCGH1393167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42486569640755393196a96e030f932de6ee1edcc749e5b91ff50d734076d7f. 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/USCGH1393168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec96f38e2bc6e72c16de6f13c82be33703c3e9a29667c9710996eec049ba64f4. 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/USCGH1393169.
Year Of The Light (feat. Tilian Pearson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d38a8b5496e011b3b426594930a552ae265e7daa8030c98206362d1216476ff. 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/USCGH1393170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3fa75c3b6dc546c421172b73d5052ebf4e7ec0698edb38033441b5afce8951e. 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/USCGH1393171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22b43fc12e34935b7fcff5e0ddde540ec40a63eb8872987e4d52fe698bbe1b8. 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/USCGH1393172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d61ee6061a281b62e4522228e20e4e32f51b86cb6cbf8eeb93edcff753817b. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QM99V1506101.
Our Last Night on Earth - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0690bc7aba81f974d60fe81b8340d290c208d14744bc78d296ee9b8f8c318e. 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/QM99V1506102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77f3099a8b2ddacb5def169e6ec78b72ee20a5c3bee93908ff38d0517094516e. 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/QM99V1506104.
Proving Grounds - Audiotree Live Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088437e526b949e7943984c41f16e3d4230cd7616a4b27b4e7a8cf016a4e97d3. 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/QM99V1506103.
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