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 0x08b875466f558093be7b10e8496e73785bbab7c9cd16c6250f8efd85d22a3577. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/44dc4087-b10b-4a7f-b6ac-1d611b176b0a.json and https://artists.proofprofile.net/proofs/artist/44dc4087-b10b-4a7f-b6ac-1d611b176b0a.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 0x8465ce1b1c6564b676a4658128b98ebba994280f28f049867fdaca04667e2cc2. 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/QZFZ21956518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519c27d30213cc6229768902e406bf657341e61884b1709255a0718622fa3573. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:40:47Z), 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/QZHN81957246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0558b8e5da51bd0e7cbc190d448887a668a3e911e21fb9d606f45a9054995b5f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZFZ62004742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd2e6f411e70f043bf0ae0f0bda1eb1226d997717660f70f1b18692251f4ff8f. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/QZFZ62004744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163b52a69827a8a7c7a671f26aab52a8df7fdaff7b6816e21a7a321eda834d2c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:50:49Z), 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/QZFZ62004745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735d93027f44575ef853f2465d13563868aa9429aac8c32d58275ee8c2f8358e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:28:00Z), 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/QZAKB2004038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x427b8cc9df093a9cb01551917ba301a1ebcc027d593913a4d3779762456ad271. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZAKB2009287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0af367c8ff17c01e30583fabde9b35284ee6538d508e350131caac6c7bf7c5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZAKB2011035.
I WON'T COMPLAIN (feat. Tom The Mail Man)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8195c984fd3c60ab88ffb2f747430c6971fd68b81a51307a1b7eaec92e555c. 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/USQX92104764.
don't sleep, repeat (feat. Machine Gun Kelly)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062250fbd7539829071345dd09392fdec72090a7fd4be8df9396d42c9c493179. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/USQX92203613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eac5f9a7b17b105b6b61640e664b9f5a7fa5918a31b56bfceed8562a046a5c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:39:43Z), 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/USQX92305087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x266fd26adc13303cc153d38e4e2c4cc54d5d64b7f82667d9a452baaded2452d7. 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/USQX92305304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47eac5f9a7b17b105b6b61640e664b9f5a7fa5918a31b56bfceed8562a046a5c. 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/USQX92305087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfdb060fd5877912003331d66c342d97e6b666a71c8ea73cd03168c7b280536. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:53:55Z), 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/USQX92305307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079a0658fee2d046deda6e9fb8e074093bf4d52a11771ccc6eb7dde0a8bc0fc5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:41:24Z), 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/QZAKB2409691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079a0658fee2d046deda6e9fb8e074093bf4d52a11771ccc6eb7dde0a8bc0fc5. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:50:03Z), 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/QZAKB2409691.