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 0x1b242e47f17e26ff4a846714dfdc6c7837f9cdf6979b6b6d6a18a1f3ee4bc24f. 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/bec68e9e-b98a-4a12-b0bb-d5cbad728ed1.json and https://artists.proofprofile.net/proofs/artist/bec68e9e-b98a-4a12-b0bb-d5cbad728ed1.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 0xa50859f348d2f7a6d1c1ae7073f3c9551b8057a95124bf60a5fd8d268cb2ba08. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/TR0510802103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e4bcdaa9a6a168c457bb5a005f57ceb5ce1ecf36e3ad1ce5718f20b676a4a1. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/TR0510802104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22931f817e0f96873e92243dc008b8e3b64259e04aa5f2b157f5a788ca02cc2. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/TR0510802115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe417937a03de587f133c58bb8ba7b0635825098c130ade07f5f4c926ec9729b5. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TR0510802110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca2521673f08460c6ce501f738c0d0614f765a6f92afc260d578d61ca687bac. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/TR0510802111.
Ji Xoresanê Heta - Çorimê Newayên Kurdên Elewî (Kurdish Alawi melodies from Khorasan to Çorum)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42084b77682c93601ecf836200f05e3b79cf2ac736b87ed515a36b4e7f5d77ca. 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/TR0511704019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca15e40aa4616e36103e8e5bb716da2b0f6f8a7e3975540dcf88b2ac7b208a19. 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/TR0511704021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecd198e410f3c3c99eb201a9c1f1d073835a431b7b523df6ba84a891763343d2. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZHZ52235225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33acb11ed927c0a88f64fad2dab58fb09e9af486a675731b8e43caf76498d28. 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/FR2X42310391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb78b3d74b3ec6bf5fb342c1df9cc8fbdba07567127a599e9ff8a059b4c48c0. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/DGA052368535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f260b5684690cc6be6116377e799209a73f78ad0d4e26c55d1cb1c1bd6d7de. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/DGA072346061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe921c6304fb3d59f0cc637818b35bf2e5c9857a097c3d0a429db2235e8dccb8a. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DGA092357983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d04cb3cfff66844290db393ace3a3e3aae00c53ac08f41f04c1278fb0006a6. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/DGA0H2314115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495b9fc9900eabd7a8a6287ea3bee2eef8a93839e46f563d4eb7204efa845c3a. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FR2X42492291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x204f480b0019098fd159a38799adccd9b7be944b95d2f9adfd03bdad04c7cee6. 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/TR0330605376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5739ad32256442e0025eba77b902dcdcd23f9d4a94a1fbbd7b951a4c80b73fb8. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR0510600378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd15b51963cc414f91a8dd5735a2923d9ae34f9a710e18daed844f737fd3e282e. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/TR0512307438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bbbcfa6b6a9f5b1753eec653a26002922dcd4f0b6623175eb0de3bacb8c4357. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/TR0512307442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c572f7854d333dac7c7f8ff2d882a6e75b800251639fc1334ceb3182a0f04d. 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/QZZ7R2425161.