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 0xb9e487816dd4b7d2cf8ee3fe92f04b01e8fb3b3b349be0d608482c4bd06485c0. 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/29f35284-3594-495d-ae96-9874a4d4af24.json and https://artists.proofprofile.net/proofs/artist/29f35284-3594-495d-ae96-9874a4d4af24.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 0xadbd0c67a7001cc6c1bbd96fe8c9b8bfa6b81a8650597c011848bd4ef19a057b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/IL6651900822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1f4017213bdef170dea67667de5175734b33c061ffe5c26fc041b4f9b940ef. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/IL6651800383.
Can't Stop Won't Stop - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b1900f5abc267fecbd5abf09aa06b9adff1ced0375cbc6e470e61e475dfd4c. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/IL6651800448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x024b4568b652a10dd5d55cf0ba9eeeb72771445a784b19fcf5106136d6f8ae61. 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/IL6651800492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc3fefaa15e905a4c029fc4582130545df8cb5301d92ca582abb28b50261dca. 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/IL6651700268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf003304d1ed82be333a9fd9fb2d2462e5c6fc1dafef73f6ba56e69015f973adf. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/IL6651700271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdce7eb5ff6652ea72c434031cf42fb1f510e577be32969a4bc9e2d79e4fa457a. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/IL6651700133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8aa73cfb50237284f74e6b8aa08e7964bed60f958663fb1bcbbe69348a27b9f. 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/IL6651800409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde008de0b518cc8251bf7d5fbdd9de958c996a4974262977bba7a542df144c43. 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/IL6651800411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1107d75546ca7c3c9ecbc155ff7af6a491cef212baf7a0d9dd63939a22f39d39. 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/IL6651700088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcda97e46b8279de6cff0e6f32d9605ef4508adf34388e2c32de31d804caed639. 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/IL6652001515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd6586f9a3c7a545bc32711b18e4dabb9edb75eeaef044d726b402f05b3cacc. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/IL6651700149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec321fbbddf48cd717093ad2e7f9907d9d66de9d98924e63ad7d40f77478a73a. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/IL6651700097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ffb1b0bff625fe568387ba6179ed48e1062fa3c6028e90429e288b2fd2a388. Chain 2 (Bitcoin): anchored in block 957895 (2026-07-13T18:41:29Z), 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/IL6651700100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65355a84206244b9100f50ce4736a6db744d684ecc6523ce19a3e14fbe1fc0f1. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/IL6651700255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000716289d9f203249745acfb680c23b284bd64d35425baaaa51a46f0da1fe29. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/IL6651800303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70b167cdfe50782a29775b63c76380b19880021a0b78af5e6cc4973b6c1f8abd. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/IL6651700204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7937a465e7bf6d9f36693dac5503a9c16488d1380d55de48b4372d7a5eb104a6. 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/IL6651700237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3817543ecc25f8f683bde56b1e03d7c0ef644c7f2fc814599a6f68f537228c6b. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/IL6651700233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85cb4c89a4eaa2cfc677d83872043893a01e21d3a7925e50875d49ac94585956. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/IL6651700189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa12f5d351b19a0cb06366b93450f181a6d99ccc13298a731316c8940a4b60c. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/IL6652001673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136b3570c0ed08117d9984f5b19f7f416c12dbe553c5d1b55dcf33f8d43f27ff. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/IL6652001772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7008ab479af1420bb72c168c28644ed667801c4a02b7bc40219a116cd35ded. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/IL6652001820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81939f764527d4bb95f74be13c995b91da2c01984d26c88b02832cb4bbdd70a9. 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/QZMER2034066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d59c7813f6aecb59a1a7a52dc818f5776250fadf505b4b651ba88bf61242a92. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZMER2034069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fe5e04d7234fe31ec78c5547b9840871a735c8d913277d1820c290685817dd. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/QZNWR2076638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc58287bb3878848c76c14c3bd7835803f981c402137bc192672b2c85c52e1554. 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/QZPLS2011339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a3439efdfd6f754d903a72dc841a657f383d845e87b129bbe83e624beed541. 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/QZPLS2011341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5b67290fb540a37817fe9bb2455a9199c1c6d2272d82cfebdcfa9539165014e. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZNWS2018176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540723442084980ba8794e3267183c749d63d40ff1cf664d8ab7ac123996960e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/IL6652102323.
Attya Ensoria (The Holy and the Damned) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a32d08f325b8a31ac7cdd79446f8a7d06510be732087a578179aa0d3de4d1d. 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/IL6652102819.
Helvv Kryd (Holy Wars) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d80dc84792c24dcdb6cbea64cb670b06076e766de74c60e5635d565b5ad574. 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/IL6652102821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x652e83f8c9f276024ebbd8d05e449fd877e19eef7d5307bc1db986e31ad2dc0c. 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/IL6652103531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63effc65e66a82d3933d0dba4f14beed62ecd01ebb9f0834c248da7c42c2273e. 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/IL6652103535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0051cae08521c42309c4d07053ae9dc094acb7ede1d4efad43d356cf288007d5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/IL6652410767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac623004e53291572fa9c6a23a2135fc95b69ead4901baeaeac5300796d14c26. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/IL6652512374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a83b3ad5f187192bfcd4f51a32796f1a40d2665541325b181b479297db48a8. 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/IL6652514031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb5f316f5956e55774b0d33cf1cc75635cf3caacf5c76c5577094ad084c5a4c. 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/IL6652514030.