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 0x93e5c853fea09be66bb7284a8c619090afd39f052c432d50d2dc0016e0b1bc28. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3e830057-47c3-4a51-b304-1bb807e9ffcf.json and https://artists.proofprofile.net/proofs/artist/3e830057-47c3-4a51-b304-1bb807e9ffcf.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 0xd8218ec38ce35f7e2f639855ae576769346126302c2419fea7765d44c1400933. 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/QZMEM2125107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5360108f6eede1c16d1f283c34ac9af28839809b4a6f4d006e21759124f56f1c. 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/QZDA72220397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e9c38e135aca21ca0915eb2fed4820d60b2b9ae307825114155e18921e4e69. 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/QZDA72220404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64288539011b66ee371c1ffce7615478ef8274554ab440943e5f40542c16a1e. 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/QZDA72220405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2c7ee72e7c02a1f10ef97c4c0e50c07c9d1491079fe4e9f97f52c30571942db. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA72220408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599abd7be92d2d5925fb43a21e69368a2c93f93756ba15849364f35bbd4ec2d2. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/QZDA72220399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b61c43ce47ba1db880c0e19de482798f0909fe12d11d33ccb2a4d54d08b3c69. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZDA72220402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b72787ff1ca247b8966190b626788378efa744ac18e00d41e39241b3ac0d7b5. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/QZDA72220403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe20040de12521c6def3c1fa7ef20a0252127e44d1f92d89718d985240ad5421. 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/QZDA72220406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba28a91c3e3410054f775f5c56faac706f84f4ec408526619f3b7f95a24f3d87. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB22255211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8072027de0c568b0b97565e75a28823dd77d5633f6c16f3c9d3395c21ef693. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZTB22255212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2576e954a28c27af735b2089614b353c9434b1a64361722bb960572eb77184e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB22255213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe887b0dd52e1d2a26aad9bf095e8d71f0dc9ba8dce0087a8071214d6ec2e6a22. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTAT2296783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dbbca509b32a6eaae8eedb2ac749e4848b5aa7ea918118aa69d9c54b3a91516. 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/QZTB22255217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f141599c8558dd128460de6455613466c166879eefc314dff6b895c17a8504. 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/QZTB22255218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1750ac7adaa582b195cecad17fcb72736b8bb08b94cc327bed92fb4538b8cdf. 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/QZTB22255220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496571afbe0710222d1629616dc646a8551573986d2c0b76820d7c43f78a6fd9. 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/QZTB22255223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba360d64208dd318b313bd88e8566054dcc173fa45a9936a8ee75d5068ec4988. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZTB22255224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5a1e8faf6ff67c88e73aa79e2c2f9d1f272c689b2505b33f6032a0f599f8160. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTB22255225.