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 0x1e3d83719afaecde8e59e4ea444a5cb25e2d1e8097c0357bc5fd36e0a7ab4ccb. Chain 2 (Bitcoin): anchored in block 953641 (2026-06-14T13:54:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3b920848-eb8f-41f1-aaa5-8183c5e6727e.json and https://artists.proofprofile.net/proofs/artist/3b920848-eb8f-41f1-aaa5-8183c5e6727e.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 0x08b946a332efb85872cc19618dc68e1b25def7d0447faedd4abfd08a76da4446. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZRP52185432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc5f0811a6b73c2cf45cb6bb9765130d4f028712947250b234c194d5f1cca17. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHN52275228.
Der Retter, er steht wartend (The savior is waiting)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1e918931bbfb4ee88db448d274192b8e7177ea0a4bbd8cdd72c1b986e46b99. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:02:32Z), 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/QZPLS2391005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6645af26298abf76b09591662fe74d4e0cc166520ee3ad9877bf1214974e0634. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZPLS2391006.
Mein Heiland, wie sollt ich schweigen hier
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ecbafe3797ff3313134e13cf2cf737758574803159921481b4e14612a82d76. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/QZPLS2391007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dda042c27a730a1e77a63777dace41e1bf2654995601d442fb01d5d770ed556. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZPLS2391008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc83fdc2b71ba895e9d63aec1072f002d41541ba49e119aaf8ca28382b4d6200. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZPLS2391009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8299ea8b6d8df13b0efe1f1a261a1b042cae42ce8699ec3da207365bb08720. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZPLS2391010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b0dbdb6c84a0114f77dcdbe69373eab1737e99f2defbdd555d19b153a8badd. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZPLS2391011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa937930c529f0ee022e42b047a638d7719d12e8402e4d1c9eeb3760c15f88a3f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZPLS2391012.
Der Heiland reicht dir seine Gnadenhände
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9661c792b26a1e6113a2138b14d53672187beda5ea7fe92829c469679834bd0b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZHN52424304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x500932db43a08f47a8ca50c8e1bb456d33965e689f53963bcb9813ec7e4697d7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZNWW2441219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b13fd92b481d5ec1f6c7292666b0ba8506bfb8713ccfd1dd1bab7924ddff70. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:53:13Z), 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/QZTAS2431603.
Gott hat uns so sehr geliebt (Weihnachten)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1db77e9aaff5b668e191e3a722d7fb6fcac169395daac8d12268177ac0b3c8. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFYX2511366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75dd7ae57da452217f100c5c59a5f990b79e376b6a3ae86f249eb035464c4807. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA82528108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41d9c09595e43aa61bb481cc8eb0167abfdc76d0912bffc40dfd6873a184e4fd. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:13:13Z), 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/QZZ7L2535737.
Wer weiß, wie bald schon der Morgen anbricht