thumb|right|The investiture of Dame Lourett Russell Grant into the Order of the Holy Sepulchre Dame is a traditionally British honorific title given to women who have been admitted to certain orders
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 0x7b3822f90a1500e83ba72f500f3ebb8b30cc8ac8c790c8fde56f2f5077db742c. 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/c18aa7e2-add9-412f-88da-94862552cf67.json and https://artists.proofprofile.net/proofs/artist/c18aa7e2-add9-412f-88da-94862552cf67.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 0xed6f29959b580f365e366f76741f8941e187e129be901297b94f495f694865b7. 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/SKG671700202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1090f622f7cfb8cf64b46a9f2e61b25082b2be4dc0018e73d8752542f6f558b5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SKG671700203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a26ff5b5b4d2eea7ef2c39431bca90707edef87d77a5e476eab5b0830e0a7a. 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/SKG671700204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307ec697b57b39839d8d520aeff3bfdf43bda1a7caf9a48d1fc86dbda437de78. 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/SKG671700205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd392ae748c812e0323fa9ec7330b9065ffb30ec8d3c848e12b461250f60245. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SKG671700206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd823b82d9a66e736bb1cb2318fdff57321856dd625584ad7ff48fcf7a0700644. 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/SKG671700208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670bdc960ac504fdf1e1d958899e21e4e4eff0554e62f10457f881c4e09a8ba6. 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/SKG671700209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e07b172e9b97758b98a6a395eaf4ddeb680fd6bc23c51cc306140d05947589. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SKG671700211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c55930c89fcbdf1398d2046b6c4f3e3436576a948a61695a7a19e0da80faf4. 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/SKG671700212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x223685fe6454aca3e49f6cb8130671740f32604b4d9b01b0f248949787954c83. 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/SKG671700214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb41aa2d11b7aafb3630e3a92f24a0b7c1bc345443b71f710d2dbd2d08a26b7da. 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/SKG671700215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9262064dc5e91f0b1670d142204ae567aabefb9b57f2fa3ef89d5bbad09df93. 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/SKG671700216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb447830a525014c8baa1402d1ef62ca617ced421d0cdbd30cc1408edd42f4cab. 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/SKG671700218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84df5002a2e8ac55810e8fa638392fdd9158b14a68af2cabc6a0da089959c6e3. 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/SKG671700219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3700e414c389d46528b164d9c3a3de7c3c7d9b7159556541a5d4ad5202dcb3ff. 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/QZN882319838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ca65a244faccce7ea8f92b17f9fe9974dc82b8865f632e443d9067daa6c7043. 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/QZN882319842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc32168f7f197e9964f0a166e5a8e9c38c5a3913484d3d784bd057975d44e832. 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/QZN882319846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1303e5b9f4964851be9dd62c2096656f6b501f5dac64e80909a072602edff3. 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/QZN882319849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216a27535de59c1628eef9855f3651897c050089c6a89966da8c24a81e85d9bf. 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/QZYFZ2369535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca67046406cafbe671baa5284a89df8111f2108182abb8776406c7b0cb6739bc. 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/QZYFZ2369537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e1fe343febf727135152d59fee021009daa70beb21fb3cb00a00618edf5963. 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/QZYFZ2369538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e4bb87be5db31149b08e504838f9c2e3c6178d7ce69b44b1f0568ab3bd7cb55. 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/QZYFZ2369540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35c09e59963aa8f2c55d81f899cc5e91947c8b80e7d662a33e40ad059d51a85. 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/QZYFZ2369542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915c69dc6a2ece993cccecd1630c41e9b94892a3cbc3d765dbc690f5ea9f9f9c. 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/QZYFZ2369549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2143e3a09293daed31322ca2d8410d0f671abe23488daa295964ac3e94ed9739. 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/QZYFZ2369551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83b942887355496372ef2bc890e57075b71fd04372f9818e12906fcb191576e. 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/QZYFZ2369553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbd03adfb45a8d5a69d3e6bc531f13113a3c23e06c9d9c44df5ca35df682423a. 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/QZYFZ2369559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216a27535de59c1628eef9855f3651897c050089c6a89966da8c24a81e85d9bf. 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/QZYFZ2369535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc8a51868267c3654ef53bb4064237299cb71b274cad55fe9ee56c82eee53e6. 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/CZUM72100213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c1b2b25f9df1b68b40ce1ef644777acf7b1154b53f2ac879202e46c9f53c6d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CZAC91800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51ee01fae57e6c2bbff9e29efabac93470ca21f9613b23922adf98066d0848ff. 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/SKG152200304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5ef15fdf274b4fe73073180112006ba759afc8f1f83a2611d95e416139e9c8. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SKG671700108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4428c83484223479e6bccc1bcd3b72ccbb5f912fec1a4ceac11115b6eb8c36bc. 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/SKG671700115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbffde03a974ee52e01afe631e930e23f38405d21d4b64fa1cf91f351139b59aa. 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/SKG671400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdffb22fa76d326a801af62d19543d639c62c2dc0b030b6917741e22a6419b1f. 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/SKG671400205.