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 0x6fde0d6a6c5fe2e8e08a277a6f7496b22a577d08436ddef0872d9689040d610c. 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/d64d6297-0138-464e-b6ee-07e53c7a9ac4.json and https://artists.proofprofile.net/proofs/artist/d64d6297-0138-464e-b6ee-07e53c7a9ac4.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 0x9a2c9927a41ba57b3b7b78b4f63aa6a6ce73f66feab5dc58c96b7e88fab8f499. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:56:30Z), 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/USWB11601327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x351a4d1ae90f24857b4d077a72093d646f4c018eada4d36ec246594a3d527af6. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QMDN21900068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb06b6e4498c5328cfde9df28ca385f45e547436ef2a0c5828f255f6c373062f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QMDN21900064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd19ac16223308e4874e9e093119528005c0ffc4f1ca545d7ef96cdf6b3de1309. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMDN21900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316bec7034533bb737567b896616675c9eb33b28f838443b18822af886141aed. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-22T01:10:57Z), 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/QMDN21900071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebe6d0733adbb8caba6d29711d227aabc0ff8d5d8b8deca54fe48bccf85becc. 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/QMDN22000002.
Vida: Season 3 (Music from the Original TV Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c81066cdebbbe74fa6114834a6ff095acb347fc1b03d29d2723c635b9cda8c4. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:17:59Z), 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/USA2P2020376.
Live From the Garage (Guadalupe & It Don't Hinder Me)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdf48d26be5378a3279532b769f5a5ad2b85111439817b75434470b9d8a304b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:50:49Z), 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/USBQU2200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b87b047938bb6f1edcd1baadad57f8cf2ca57bfdd38ba5eb4c8bedae8f5cb11. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:08:13Z), 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/USBQU2200394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdf48d26be5378a3279532b769f5a5ad2b85111439817b75434470b9d8a304b. 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/USBQU2200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda35e42500025222c5c5bb212582859f9259b3a52637b554cf1e6f9ec275a4bd. 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/USBQU2200388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdf48d26be5378a3279532b769f5a5ad2b85111439817b75434470b9d8a304b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:27:45Z), 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/USBQU2200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b87b047938bb6f1edcd1baadad57f8cf2ca57bfdd38ba5eb4c8bedae8f5cb11. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:12Z), 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/USBQU2200394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8763ee4ef13c3300c3afc8d60e0606e1d4ea06664eec76efaacc8718f1a17c. 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/USBQU2200243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fb8ac2950461afa4daf67e73065a6e6bed4cd2170a31308a5583e07d3a5e475. 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/USBQU2200393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff91d68285a82ececaed034438dbaab1cc8286b2fe13fa4984bbf481c01cd62. 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/GBBPW2100221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc7a7d5fcfe15c82508b12a244b910d5672fd2c25b5f45087743b3ed6fa28f2. 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/GBBPW2200159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb82dcf0abdb0099936fa9373866c17b4f841aabc0c62113286040df3b42a3868. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZMEV2327579.
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