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 0x4745b75cecaf6617d164fe6bf4918154546bfd4db72abc72f467381cdf517ce4. 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/3aa379bd-6d2c-4216-bca2-4bd5f808ab71.json and https://artists.proofprofile.net/proofs/artist/3aa379bd-6d2c-4216-bca2-4bd5f808ab71.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 0x2de33bd2772bdce0a2982df54966092c7c77b216c425310913df504d448d2419. 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/THW092201480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2de33bd2772bdce0a2982df54966092c7c77b216c425310913df504d448d2419. 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/THW092201480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aec43d443e1c180530a92a3538e16fb0b88a1dc0023ec0069340c9066fce32d. 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/THW092300704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aec43d443e1c180530a92a3538e16fb0b88a1dc0023ec0069340c9066fce32d. 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/THW092300704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73003c0dd4c379e387c98b948d1904f5ca7cf193bb3a3e45f7067a93744f25b6. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:46:55Z), 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/THW092303897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28d727291f05a6f8f319bad801c0d215ee7b6f351754de2767d46410fed82b0. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/THW092402371.
เธอบวกอควาเรียมคือเดอะเบสท์ (Aquarium)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de473ad853dc0f4f48e89471a415a480bdad07acf94de98d9c9e398e86b6857. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/THW092402381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc28d727291f05a6f8f319bad801c0d215ee7b6f351754de2767d46410fed82b0. 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/THW092402371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff60cc6034badde35fe73654009e3be13c0c07b967afa9722c4bd15bf68c252d. 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/TH2DY2500601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17db626f6acca341772a378dd8d53b92aa189bc1149d1521c09f8c3e1dc4ac3. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TH2DY2500602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7da7a5dcbd7aed526bbd79759c71dc36ea0750b6c4bc79e8c083c2a2885db9ed. 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/TH2DY2500603.