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 0xa8f615e677fa486856d495aa774b49015af31d7704d4f56e61401dbcdb078312. 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/c4029f0c-1982-472f-9d90-7a2c6aab1787.json and https://artists.proofprofile.net/proofs/artist/c4029f0c-1982-472f-9d90-7a2c6aab1787.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 0x967556434d34d83c9c7299beba0164dc703c17ff4b134f6f81e52f01f4be68ad. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNWR2285972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5495c0742098089a8f75969c036374f75e9788cab172640e3e674828c4b3697. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/QZNWU2222483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790ab9f7e495fd695669b575f92c0111bf57974829742a06a904d66e5281efc8. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZNWW2250656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cc095dbcb1a197566e2e0a4ce2cd882d1e9415d0d6ce99b89cc78a85a515ea. Chain 2 (Bitcoin): anchored in block 958680 (2026-07-19T06:04:14Z), 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/QZTBA2276525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190f5b162a26d00a6a3cce65de37e653f51706f49c33a6fb568241d967e5f1ce. 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/QZK6M2358119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0775e52de962c94332909541a55fec8a7c1e056c860e79288f6110e1d843f92d. 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/QZDA72488866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12b74232184af7a41f6b932ded2a46c6741fe4d7dd16da9be9e9ca6111e83feb. 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/QZZ7W2466142.
Angels (I Might Break, But I Won't Remix)
Angels - I Might Break, But I Won't Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19c4b016f5e5dd9b05c2c6983f1463138f3e8c6303b3a7f9ec811463e3c9fb0e. 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/QZHN52525653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ada43045ebc6547725c9500647f36568ed82f5abe843fb038b22d41e3a3505. 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/QZK6M2592133.
Ark Patrol (Let Go) [Running On Empty Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6a20dcac99d95695ddf06eed432114f9e98953ae03a783dc667a9fb1e0d0e8. 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/QZRP52569145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6db58f065bc5a563951607a87aade035c6c4e3628acd26076ab40e7c6e2ae59c. 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/QZRP52569148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755d544567edc5866209597d1c9d888a2c5b6058b7300073495816cc6cf33483. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/QZTB22542070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140a77dd5f875ff7a9eb44b09432d582d53dc402875dcf1173fc72c6ee0bfb04. 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/QZZ7W2541428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf0108a7b27ef1f84a656d4968aa35065db7c0c0c0dfcf9973a08918d889f3b. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZZ7W2541430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5822f39a84136e54fa243f1992bc0ca1f260bc2c4700deb249b365f0f306ff0c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/UKQY82400032.