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 0x07b355aaa7a6f29e78a4205a75dce0e5ef4543bdb2997b9d03ea24c943710fea. 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/7d4f75f3-6bd0-49bd-bc64-5351745e1a79.json and https://artists.proofprofile.net/proofs/artist/7d4f75f3-6bd0-49bd-bc64-5351745e1a79.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 0x6aae86164df9535eeff389332ef1aabb403f1d343e90dcab834ec1e805dd61e9. 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/FISRK1400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316539ce4ada3cedb8011fe1bbbaf01615eecaa21d4392319075b3526359d0f8. 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/FISRK1400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c87551cc9fc905cb47e7fe29eda65d3da98a461b03f25e46f35fa51cb1a5b0e. 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/FISRK1400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafbbb854a0af9d6c167b40a006871a6a5c9fefc400c1fb256875e9aa794f42b1. 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/FISRK1400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ff663073c393a9def69d8363e1f63be52d8cdc93a5e6da1fb4e0113efedfbb. 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/FISRK1400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02f67225511c0717dfef6cb6d0169346c3d798b8b81a959bc7062a0fbec05ebf. 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/FISRK1400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69f6eb241849f1ce6e67786c18df826f4ab9b1ea5cd609cc8a1bfd84ff3dfa4. 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/FISRK1400044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09b751042cdb0496b98e95c66ad27a426a71a40c785e2cb2ee6b93151c3af8f7. 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/FISRK1400045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76038db5ade4b23c4d282d45eadad0074f66513e004bceaf55bc92d0c5992f9d. 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/FISRK1400046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78519b6d7c1d7786078a9c5ec996d0a37158650842d1c8aa485c736bc123a2fa. 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/FISRK1400047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecd0f290ed8b400647c9651e813f8e891e9e067bdffe94640f6ef1c272eb4b3. 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/FISRK1400048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59297ec2d9e0d023bfb6e9534ccbf9aefabb02c74ff5b22b4a9cd75e4d36f095. 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/FISRK1400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb1ae7d8be801038566e0bcf85e5f21b8a907dbea9a0078dd1106ab78321284. 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/FISRK1400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ea40bbcb30b1d600b0c9e8cb6236550d461450919ddbc884a41b7ba1e9804d. 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/FISRK1400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9dcb0abf94788ad7cdc86a92f008ac177fff6bd80628ab5c35cff4085d5ded6. 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/FISRK1400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb738d1b700114d9dc9c83f564aefde49bca35b11c2f35b1280369a202b36c10f. 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/FISRK1400053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a0710d85b6474383cc41c856e149d62ff0cb0d03bc27cdca6a94afcfc91ad37. 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/FISRK1400054.
Siionin laulu 215: Kun saan oma Jeesuksen olla
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbde48ae95a1e8c10ebe781ddc154b263ed3326b0b59229748ac881a46f8fb2. 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/FISRK1600347.
Siionin laulu 258: Jo kaipaa minun sieluni
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c1f80d2f0369fbe45c736d6c81348fc4514a60d5a3352a1ae2646e390068476. 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/FISRK1600353.
Siionin laulu 277: Soi yli tienoon iltakello nyt
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3a7cc24661388b01ca2662eda6dc0441570a6f2249bc6c0120d719b24dd649. Chain 2 (Bitcoin): anchored in block 960387 (2026-07-31T10:06:30Z), 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/FISRK1600356.
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