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 0x5698a51331c0eb7a4e502a822b3ad214a0902f9613f2f3a402265d3eb4023999. 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/e823f3a6-4591-40a2-90f8-10c0534b14e6.json and https://artists.proofprofile.net/proofs/artist/e823f3a6-4591-40a2-90f8-10c0534b14e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lay Back in the Arms of Someone (Extended Version)
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 0x65c19c6aad2557838537ec9fa96748640b350466f7b5f7d4b87bd878ae50c413. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/DEQ092400030.
Lay Back in the Arms of Someone (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x930eb931f77f0d9a4221c288158348cff496a2633cf79962088febfd0e8ad058. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T02:08:13Z), 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/ITG412000123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8404547708b4e9d0ec13e69b4b6b9f68f2effe32bc0a2a0700ac0eba2460f1f8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/DK4YA2138401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8404547708b4e9d0ec13e69b4b6b9f68f2effe32bc0a2a0700ac0eba2460f1f8. 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/DK4YA2138401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc721990bbf28cf36a23c6b5ee6a61bb3f1422b51b653c5d50fdf0db572c92c72. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/DK4YA2197001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ea2652c4ebfb1a6a5a5fe872b415bf63e125916cb6c6733b273d90ad5e7bc0. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/DK4YA2273501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ea2652c4ebfb1a6a5a5fe872b415bf63e125916cb6c6733b273d90ad5e7bc0. 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/DK4YA2273501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0fb3649d977564d59a7f03e5abe2694470e63f2ee1d1767b0623587ebc8ace. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DK4YA2284201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0fb3649d977564d59a7f03e5abe2694470e63f2ee1d1767b0623587ebc8ace. 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/DK4YA2284201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe67c776940e4b22173bfea0b604e2449853352942c58453d14fd5a83ab4d4fba. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/DEQ092300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724e210d11e3e49f2428f1da6794ba8f880419c5637f10fd2b4e08ed40d1736d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEQ092300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c40f87cfefffdf1e614f297ddb73261d2a18912c2f29fb121de21daf66dd2d. 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/DEQ092400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebb4f887cd86203dca05e50e0f031a677ffd5642e0a75cc1ddb03cba3a8d3bb. 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/DK4YA2004005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472d4ea663328b508d8166347317dddbdf8ae1173ab56da3d1e307907dd4719d. 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/DK4YA2004003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476905866e5f5d58602a9e5698ec86660c4102998c07086f89843e7724bdfc31. 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/DK4YA2004001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85be896b5d7e434bbf675caa1706d8741f336647ba5d7badebc0d4fbf37ca7c5. 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/DK4YA2189001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcbce3081d208695cdd54812996b8949e26ee622c7fd17928d451774fc239e2. 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/DK4YA2281901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99f83bbeda0e5e91cdc43847681818d4098700c66e8ea2aca1b180f6f30234a7. 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/ITV952100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5619b79bd4ea7dea2d57f40faf7fc612aead90211a1635d1ab34a9446db397. 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/DK4YA2132801.