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 0x6c421bc532a051b92392207e13ae76be99049082883fc794d0f6525e771266b7. 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/27612b03-d095-4493-9bdf-fb708c65843f.json and https://artists.proofprofile.net/proofs/artist/27612b03-d095-4493-9bdf-fb708c65843f.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 0xce72202a8379e363a8975e5916b12722e1928c167e216833b5a950fdff3710fd. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEQS91500357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea72c54dc507e3e2d05edbde59f1451260daa06b2d64fa7ae396ca189a6b79b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:26:20Z), 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/DEQS91500360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52cfd6b0b00031fad6c36d5e7c3ea967e6700d7b14690fcfa1b48f041828cc1c. 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/DEQS91500369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda940b430d85288187c3f396d6afe4c8cf5109cb54c6861ce11cb855e41c958b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEQS91500371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea72c54dc507e3e2d05edbde59f1451260daa06b2d64fa7ae396ca189a6b79b. Chain 2 (Bitcoin): anchored in block 957616 (2026-07-11T21:52:36Z), 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/DEQS91500360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80beaed1357394803ac46702d0ec0e25fec50d5b70a95dde5cf5c696109af015. 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/DEQS91500361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa81504df341b00caac69f256f8e6a51cde8135aa35bcdb709ae2aa4cdb73ac8. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DEQS91500362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ba7cde5e804776324423b957b95e0af2ef8e7014ffa3de985819d48e125a708. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEQS91500363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3d332e78f49eb578960fdce7242a9ff0e018661e8578c7502aa156b1d3fcad6. 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/DEQS91500364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccaf464180789baf324a5bad69884c5e23f31e06db6f001565c5c6794c6e07fb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:46:53Z), 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/DEQS91500366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc3e9a2261fb3e855a80560499a919defa2c9e51ba6e71b96b956d82a09b1e5. 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/DEQS91500370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda940b430d85288187c3f396d6afe4c8cf5109cb54c6861ce11cb855e41c958b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEQS91500371.
Keine ist wie du (Hübner Matschke "HÜMA" DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda615694c7042765c5456add7d7ff5ed38dc88f6943644d8727f1bde0266774a. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEWO31710037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59967d3f781e9eee921b7cebb15559ad1df255525e568317352e7c074b45e86c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CH5432201027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308a89f9f2f9ceb733c1c7428dd8aab8e3e5682bd999af6642eeccbe67d00627. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CH5432201028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1f8902d0f81183a96d60feee896e39d3c6181c78dd51ba5f77203fedf5bb9bd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/CH5432201031.
Marbella Marbella Marbella (Costa del sol)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec5906f51ff8672425592cab40194c80915c2d86caccc699128a96f465c2774. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:11:38Z), 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/CH5432201034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31fafa357f025776e158aed0afbb24fd2222af1972eca66d066a73b92bbd3b23. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ATB842500565.