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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc506f6bbe77d9d1d775611f441d792ba4c50c310c4eca35a717ceb68b3da778a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a3a86240-366d-4a1f-bfa0-79829d01ba7a.json and https://artists.proofprofile.net/proofs/artist/a3a86240-366d-4a1f-bfa0-79829d01ba7a.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2846c9c70f19b0463336e7e7b51ccfc5a03e1381955ee7f77b8897f323e492. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NLCK42415051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61197475e64d652df220783c476994242a23cf021137bce424d83e866bacde28. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/NLCK42501066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ad89183a63bde74fc13a913ca8a871a8f28aaeee253cf0a9ff14dd777b42bd2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLCK42501067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x207f7c5fe36ac1c771f91b86bb2c5b035e0418251cf1932ff9dc507149dc4ab4. 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/NLCK42501068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcc88e0bfe9315b24bebd5b662d702a4cbe9a127af0abec9058a04eadb39676. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/NLCK42501069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7374a65022f846daa676d5d87847f47f0a42a5c97aadc26bc4d217c8603596. 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/NLCK42501070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7443f110f1c6e22929575c6f06e2fe14dd7f28de058cb0654294ff247a990221. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/NLCK42501071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92bfdac16ed517ed07e3257de5c92df0f42e434931d961e3cb8fcc67f8ee07fc. 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/NLCK42501072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6669f59403842eb93ccfc282eaaa5c30cb1741741fcb4658a707b6b4e8e51e55. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/NLCK42501073.
V/A (Héctor Oaks + Obscure Shape + Endlec + Jerm)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa578aa1d90233614fa717290462927a84a7ea804fbeaf4b51e92560905d996b6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/NLCK42508584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce92b671bdf085951c6e4d247e1194c800693f83c55e275ef8d76f2271094f48. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NLCK42508586.
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 0xb2cadb9275b5263567cd5c3925dc907d13b6e5ecefdb83d00095324545ede31a. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/DEH742403165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1035d5d26c9fe66ea4f7a8c59d6bef75352483b12d1cea577d7790ab4425771. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEH742403166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9418119a0addacfeb124747abc87e20b590476e149ff4d54728d61b6e1d8a1. 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/DEH742155880.
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 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/DEH742155882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92fab7ca2b129410a2324c42b4c1734787e3a0c3003f3f1d9a38cf402517995. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEH742155883.
Kein Entkommen - Héctor Oaks as DJKAOS11 Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890871ddc25363924e9b97956018f8eee7e9a30b75e0520885d2a72abee0578a. 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/DEH742155884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4c1923d27f0726f9651bd9ad7fd58393eb928297e65c79c56da4836b74d8f7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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 0xd024623adc83e8b85d5b8a205a39136d227f3054d516daabe428ec7f63011cdb. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/DEH742155886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264986bb19c0e09ccfe470a2c82d466cc68bba413edbd24d00ee6d18bd056e94. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEH742155887.
Die Augen Des Teufels - Stigmata Version 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d711686421d445924ed002a3b4d7127d194c3087e1b68a8735957856fbbba49. 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/DEH742155888.
Ellen Allien Presents We Are Not Alone, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1fc7ad6f96745d0d28facad04dbd0db085f564929ada449e1cc778b6519009d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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 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 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/DEH742201398.