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 0xf01b3e057717854152090a903fa8ab311641ecf6080c91dd14c8b25063461b8f. Chain 2 (Bitcoin): anchored in block 954603 (2026-06-20T21:47:54Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c0480811-e60b-4eb0-a1a4-d9bdc1978461.json and https://artists.proofprofile.net/proofs/artist/c0480811-e60b-4eb0-a1a4-d9bdc1978461.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 0x8493ea6f3e5461c7dd315353483422532c70e3359d0ea66609035b3730f2c2db. 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/QZZ972373900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0475e5ed913a5f5c071440f197dce370cbfd9e53103f4f25fedf24f68bb7ed4a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZTPX2488850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58983ef7ae7bea4eff22a6cfa44966f55289842d58239185df67ecf2615653d8. 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/TCADH1718585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c581ef3d3d3e880940273f15089fd7137be0f82467fa40e5de50327aa54b357. 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/US7VG2397459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf7103285ad4a460cede2b51f4b2d287840a76f7e220b056c5ca65fd8784d73. 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/TCADH1718596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ace4a534ec9d0f89ab66ca59ae1ffb4defc30c8aa6624bfdcbcb1cdab9ca3c. 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/QZGLS2344155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c5e58b7d480e5c4479616daa7d5a9dd6b9e469d7c7c7452c7a6d586ea457dd3. 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/QZGLS2344259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd2d264f0cc98125ba04579377e9792aed835c66f0dc1e871007b37460946e6. 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/QZGLS2344016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0f2ca2e47e4afe06793e9de9b0e6d64416512ee21bb3e1338ff15b32752ac1. 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/QZGLS2344353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb2bbec36aaf84d2558faaf52a5f03ee21a0614ed1440e083620103995511c6. 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/QZGLS2343979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf627a2ad495a6377491be5383ccfc6281a41094a8be326760ecb691736fcbd90. 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/QZGLS2344189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93ac5c8073f3491d297dca8337dcbb3c35c04c6276710bd73c663c4fa9df6c2d. 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/QZGLS2344219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d239ad0f704b4a64491b37dbee162a7e60e5286050022ebbd8f9f3c1999991. 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/QZGLS2350643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e11174f64632a56a249f3cbfdb7ebd23df3fa44e4e2d00d3595368f66e59632. 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/QZGLS2344163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x060990ccda5df85725987421f7c9e4cc5c1d390f9b68150c000b60e2bbdffd1e. 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/QZGLS2350637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4491c10adf3c864abc0d99c661961108cc49d7ad47d1ac864a63798dabe2c997. 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/QZGLS2468909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b6d566e6e496789fcbb096a949d000e8fe7abc651e661162180125ec5629c7. 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/QZGLS2468915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80dca4328a0a9adfdb2e47e57d6d4c62736761ec8154c46679d5d5222fb45b62. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:07:16Z), 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/QZGLS2468918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2ae6254bc22861f6941d58378309792d7489746a8d0e4920a504914b2ab6d83. 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/QZGLS2468919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd1824a656223bc5ee7e0a2faed7a418a0043949c46c876272c81a36f7b0c16c. 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/QZGLS2468920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae36dc0e325840814fa9be406884cec54c8763b3722c3b008f99b8ce453fd2d. 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/QZGLS2468926.
Feliz Navidad Inmundo Animal y Feliz Año Nuevo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01219121f91c50a5cef30109fcf8e5c8911ced487289c081190e2f9c3f81095. 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/QZW9M2450624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeda6a019e9ac7723b7bc84bc219db8a76288ac5a16d99c57ed559e05d2cd3a5. 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/QZW9M2450625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b307b7070f3e597b27d757b53d293bea274ea68096e81fe3499892f1d9c6e28. 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/QZW9M2450626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9365d16dde75faf7544f39e13eac120774a569c2a9f98a2f4d7c7546322cbe. 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/QZW9M2450627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c5f33d1e9cea16ae3b8925be3b4638711e2ff7e76c7bce50aea53e8294955c. 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/QZW9K2385314.