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 0x3a502986b4eefdf1cfec8e8ff325da451deb1b9d6e303f3b520dc54fc5158311. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2f1ec15-f7cd-454d-9daa-1fe509a79d6a.json and https://artists.proofprofile.net/proofs/artist/e2f1ec15-f7cd-454d-9daa-1fe509a79d6a.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 0x13d7d2fa7f42c0fe55e77fb78ff17a142afa253b09b62d769b02c718b3db5e3e. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/DEY470907778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ff6290cc25811d1c20934e4c069974ce671e928a455031441eef33170766333. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEY470907779.
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 0xfe991abe134c14a6b89b12f4126f7184d324973eb63fc1c65f95ca7beea1fd34. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/DEY470907780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd62abc36b3fa9772f3d3cb3caa7632a77998758f4923d047279829189fcd2f. 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/GBLV62306903.
Setting Of The Sun (Hardt Antoine Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bd8e4b4ae20a1f735b67db2c3e2cfaf5347bd4abdc6fe40ae9a3e288490a55. 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/DEY472280036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd105c3084fb8eb6462a23883578dea044aeca40bc5155f3246a1dc377f2cce43. 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/QM6MZ2229562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9605eaa004c37b456aa5a262ed7c4541120381bc37bd07d9420fc2ef698df0f. 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/QM6MZ2229548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f1aafcd90a9da7b5494e2b0eb7222dccccd25749316d631322134fb093889a0. 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/DEY472177571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda59d17f7a3e707a6087f6974582698e44cf4a6a04e59a2c32bd5c06cce4004d. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/DEY472177570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abdfbff278f2f78bb9ad352302d19eefa2943a9bd3f952d456d79537e6c6b93. 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/QMFME2106797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e6a70c9faf02b7088a689eec3a1b545f110c128e8cdcc309e329805ff179f4. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QMFME2106799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b05234c4f3bdb5dd718a2db61b769d69a0802a1613b1bd2184f145bebaab8d. 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/QMFME2106798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f6ca672a9ddee17eb4da61fa6af792335c1463291264abc864c233dfe0337b9. 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/DECL11900971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a929cb24ef65bd430e35166c1529b5c596c9cefe786440285da08c2ab78f3d2. 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/DECL11900972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeec904bedc46f021870a28e812b674d00ee2223caa1c402319bcce5d9739484. 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/QM6P41873579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d90e3b9b9f8ac059f562e810a60c959bf483d78d7b0164782dca70e637f6f82. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/QM6P41873578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1824fa90d04bad1016adbc35914644766af168fc4dee2a19f2518e5d8ff631f8. 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/DEHK31700607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe588b9755e694ff8f3d5705d7e8421d7d9f068a2013e17e3b011c6f827a88fa. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEHK31700608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cadd7ad07bb257f34514f231a26c9379b2825ffee9faf0d1be07f0d52db85ae. 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/DEZ651607079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ecc2ac89fe9ccf655bcb45662a1f7502093f9b9bca2c3699c960cf263651858. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/DEZ651607078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025b2864dc6e922c49232f9fcf4313227a377e8a8dde0284193ced9610c368d3. 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/DEBL60339578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3a634f4945d20573d6c1d1aa4c1197832991873640153dbba4c1bd0545b236. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/DEBL60339579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5768f82aa4cb5e15e35c7f96d438bc25be5a117aa86bada0d6f267a133bdf9e. 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/DEGL61200071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d2776dd5c217ced75344624167918211bc8bc84cd47789f1a49e6e5006db9c. 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/DEGL61200072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad71aafad2f1335828b40b89a19dcfcfac25ea34065a906081bebdb759a5c0f. 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/DEBL61130576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b384f131c7ba3187a342ab17061a655ba59954ccc22436f9a69d18741ba0c87. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DEBL61130577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46380a1469972df60ba27f9638f29a31c18dd45e4dd6b69e91535684cac9325. 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/GBKQU2431548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff2004a77544e41e58feef5bc027eecbc730104b705f2afe5d033cb7e59545e5. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBKQU2431551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d03d2d6d2443dbd3b603c25bfbdba4e98d13fcbd748a8cc99413f2ad0e4678. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEY471611831.