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 0x0cb6d89085503f8e55201783bb35f96bb7193e9ff799db9d059d526dae813be5. 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/c94db854-79ba-4a0e-857e-f0ba9ae0e40b.json and https://artists.proofprofile.net/proofs/artist/c94db854-79ba-4a0e-857e-f0ba9ae0e40b.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 0x4fab3690e65ad6573468f8f6c2a08a0c9ffdbc6124470ab6ae00453dc40c87b3. 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/RUA1D2351274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6c3813be992385379166ff85067f657b9137e8317057919a59f19fabf4c4790. 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/FRX282408860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f6b7d25b169c8b95818cae0563d8fa28723eee190c77a27e4ac1bcd1154cc4. 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/FRX282408862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d545d3cb01e4bae35da190b2c600c97e8d5e18abea1a7ea6f0067661e8992c8. 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/FRX282408864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54e60447d60c5745990fcc6689cca407c65da1f6d59ed65e271643c521a1ddf. 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/FRX282408865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49ca075c2a22b27045579ccbba72a4fe7912c2ffe74843c3f7c7ff2dd98efcbd. 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/FR96X2198286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650b82889013d5f043ec802de32c085e1a2b668e24dfb8733bf2d919ae40b47d. 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/FRX202117939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d640da9afac8d31d5585b3a36d25991f7e05d9f26365e442035f1f27a48816. 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/FRX202117940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e79e9f610c49bc4d483b4ee8bb550dfb8a2032e08259c343a8207b53376e6ca. 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/FRX202117941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33b52a3f20a1e891c8696abdd7dc797c8d5909c624aec6b4d993c81215bf668. 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/QM6P42104191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68c901bb02ec3d4d7bb526b162077d2125f617cb163076313c69d7ac837f1b69. 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/FRX202117945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x102e36cabda30be731536bbba16551b2977422bbe93f3df5a7362b0f7e44fb2b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR10S1976230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53df0da8c80abde2290b5c95dc5ada23e193f4d24c4787d6d58f3b18ba655aec. 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/FR10S1976231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b3056298193765abdb2d362803f72827bfbc37158669889982ab325b3f9ff2. 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/FR10S1976233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf799bd604950f4e2f6951c7d0402e1062f8f8fd74f821df34b5dd2c86f690654. 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/FR10S1976236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3525994741235415048344469d7db16895f3978417dee4587c87d3157671f0ad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR10S1976207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f928659ec66ba1d1baddf167f8098db7d23502152a04d8d6988cfcffd8a2c2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR10S1976208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b3e1c9e70c97dca19c103e8be5782f06fb39d594da51d62c63ce9918e99784. 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/FR10S1976209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x132589cc1fed15b97dd0fd60de12d9d114e84050003b44637ae31ec57a5fd298. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S1976210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fab87d8cb402566471b24212cb9279122ff0520a0a256fa6121ef3b2e17ed4f. 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/FR10S1976211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378d79485e6ddd5d0acc052aeca3eb9152ce2c635efbc709a29d0c2c190a01a3. 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/FR10S1976212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152ee4e48db7fbb0b19e910042bcc0da3772e02350128bbb98ca8bbe0bd8161f. 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/FR10S1976213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd8a1700ac166964e85014c59b27fe16441dbf31c720fff120c927529d56ffe7. 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/FR10S1976214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b6dfc3cf5995fcf17add5b4c15bf97e77e5bfbf858d0cfe65015393846d4a4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S1976215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea268dcfb1bf464d995ae8e98d791b1055b485d2aaeacea87513526066dff92. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR10S1976199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x782e4b13765a21bb23ac5ea03add617343f87835cf05f8a7151757598f9e1c53. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR10S1976200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16b7b12f868880a0190cc27ac657cb2a0bb2ed26a6cf2744f236d9c662cbc4a. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/FRS182111799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf33b52a3f20a1e891c8696abdd7dc797c8d5909c624aec6b4d993c81215bf668. 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/QM6P42104191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d9d1cba35220b7b1e80bc6baabd47013af69f4de4d3d311cfd74718cf142d1. 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/FR26V2091329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5550388ce817ffe5784cf04e6108900dea9d7ba4c34368f41799119946446c. 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/FR59R2051192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecaa1c92631385ec9229b3ae808727d02aee460893c212b4d7b9c77899c06b9. 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/FRX201983950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc0c09d775283a6485a802a7efd32714413bb02c22c8ff2915ccfd7f43fa65f6. 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/FR10S1976216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e10c706006248a96cac321d39e3a9fb76f572641e9fbe74c245d1dba1e56514. 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/TCAIC2471406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x993e3ce9d6accb74db3d59961f3ef45db43ead87b19bb2c67e606cfc9673b28f. 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/QZNJY2104876.