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 0xf4440493b6e44f5c14f3480bf150c20e2f5dd837abb74b829ac1a8b356e2a071. 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/c71079dd-f68c-4211-a7d3-97a5e76eb1b9.json and https://artists.proofprofile.net/proofs/artist/c71079dd-f68c-4211-a7d3-97a5e76eb1b9.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 0x11b4c1a41eca781e8cdd596304fd889d8dd4ee94e77d13e35537ced1a37daa7e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEH741649851.
Gesang der toten Dinge - Konstantin Sibold Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6229c12be1ae0a4c53cd210625fb44549b51d6d85d87bacad63fa99c53a0f7. 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/DEH741705323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9032c9aca991c0e58931a9178ac9099d719b63a9a909ce742f8dd186ddd25299. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:27:07Z), 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/DEH741808804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe40d1e7c2d511a0389501edce6f9ae64b0572dd71b8821471a3bf2d805403e50. 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/DEH742034910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fc7ad6f96745d0d28facad04dbd0db085f564929ada449e1cc778b6519009d. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:31:37Z), 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/DEAE62000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6650486d9c3e396377788d5df891d162daeda4336af2fc7f6d1885406bca968. 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/DEH742155881.
Die Augen Des Teufels - Stigmata Version 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5e763a4041a5fbaa50bc967f74e55347621c22f88a26c996ea500cd2582d6f. 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/DEH742155882.
Kein Entkommen - Héctor Oaks as DJKAOS11 Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890871ddc25363924e9b97956018f8eee7e9a30b75e0520885d2a72abee0578a. 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/DEH742155884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4c1923d27f0726f9651bd9ad7fd58393eb928297e65c79c56da4836b74d8f7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:08:15Z), 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/DEH742155885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bf4b6bd67235a04356c650013a29c6b77cb512dd4435c30ce95c4aa385cefe. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/DEH742213750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e3fc23e5762a3e68f2dacd1a6c88c79abf20d151643ca93abd8b207c0e7ff3. 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/DEH742308929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9373a9000e5e44d7d1bde21ee2a20224a36b940079614be43090b2fce5cf84f0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:02:23Z), 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/DEH742308930.
Far Away / Augen der Nacht (Ryan James Ford Version) - Mix Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0830a1f6755017538031192d8b3167e864305ddf6c1430cb5e574a15ded913b. 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/AUXN21800169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87a00e421629e0d688f5b034c11278f7489bcffed54ad199155cc01b31f6acb3. 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/DEH742302378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ace8036ba176cfff0f2fc816cb3670e6276eeb25716639a7f28783a839b130. 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/DEH742201398.