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 0xa887647f2b338e2f40bed3d74920d91ea5b450e800b3b773d4bcbb9c9cd1b8d8. 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/efbba06d-a6da-41f8-b0cf-08027dacde3b.json and https://artists.proofprofile.net/proofs/artist/efbba06d-a6da-41f8-b0cf-08027dacde3b.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 0x6a389815c9b628061119e1adbb4af1810f321732f4bc637a6c008fba6c111ec2. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/QZMEV2101037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e05f0047b118a485f112e5d1eac6ba04b3c46cb074f6586b796d69981582ff. Chain 2 (Bitcoin): anchored in block 957751 (2026-07-12T20:41:42Z), 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/QZMWW2265094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b7e71dd819928edcb3c5b9dc2426aa8fd75136eca3a97e1cb54c6df6da60f8. 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/QZMWW2265095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f07de7c4e340d80b54a5ef1287325a068a151c5c6262b177e274daa0fc53e7. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZS7J2392907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a9af244effede901b0d8feec02a2955b46658af676e063d882554ee0bb42dd2. 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/QZS7J2310071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a60f1649492d5d12fe14315d77643079069d2058e82efda3d52831193c837e3. 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/QZSYP2325735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0061d2548763cd188acf72217183d9c2b6d30835657dcc638cdb4c3133fbef3f. 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/QZSYP2457065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde5cd85f7374d60f0cb0032b45d7d9cd02ecef20e97484409a4eb94575b99ea. 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/QZSYP2492777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11128edc0e93327df4a7b578b3e7ef860265417ec2854b8235eafa816ff2c992. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T13:04:09Z), 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/QZQAY2463341.
BOSS COFFEE Remix (feat. Lord Sko & LIFEOFTHOM)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121893f6efe796664f14b994ff2891236186e8ebc1d1880016085dd9bfc678e3. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/NL8RL2505004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd16a11e128d5c6f8be88f8e8378739a15a97c8e03004e2ae46eeb6b33d24c79. 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/QZSYP2499895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf510cb6bf3b8351b01fa6575b915b798224ff0694f7c5202a6ca58de35f4e6. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/NL8RL2506821.
UR A DUB Remix (feat. POLO PERKS <3 <3 <3 & AyooLii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb909c3f1415e575e935a808af58c890450df8abe26e7a2b738419098ec3ff520. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/NL8RL2506822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11128edc0e93327df4a7b578b3e7ef860265417ec2854b8235eafa816ff2c992. Chain 2 (Bitcoin): anchored in block 958573 (2026-07-18T15:49:54Z), 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/QZQAY2463341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92790180672978336e5fc22ad45a44b0e59f588bec77cc37c025208dea25713. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/NL8RL2505003.
THE WHITNEY Remix (feat. Norah’s World & Meyhem Lauren)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f5b29b45633389d398958d8e0e5300a3f7b315dc4b636fe9a7300def146276. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/NL8RL2507353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd758769116dbf8b564893c68fa934fd4c311527e45c3f6708205ebaaf3abaeb2. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM22295694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7653f894327de6aa26bafe909991a6d8d16d1976832fef9e2e6714a3bdd4d260. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QM4TX2395593.