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 0xb58180b0160b24359375455bcccd88056f8786346cdd8616fbfa76a9ea8aecd9. 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/1f79d3e4-95a8-402c-abfb-56aa9bd05e0e.json and https://artists.proofprofile.net/proofs/artist/1f79d3e4-95a8-402c-abfb-56aa9bd05e0e.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 0xf160cd32ab3465e32695e83e74a0385d75b861add4bf83faa8dc12fd09a2280e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USARL0288601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7918b6544fe85aeafdf4cc90979ff4c5c3643b76d921250840cb98a4970662a5. 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/USARL0690902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560739c304597ca9ae99e82d2973ecc158170a054388cce8892033cdfbe61a94. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:18:40Z), 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/USARL0690903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cdce458c46ab19ff350b1488f1ede3c2ec90d86ab1c68eaf77015ff4570698e. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:28:33Z), 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/USARL0690910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066271719ae9293f53f300ffa6a259dae2d6a3e138571566de24532fa38b90fc. 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/USARL1294903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140df4799cb947b1aa3805b12ed247d8a445a7085c066bb46447736a468f72cc. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/USARL1294904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de4df40bc5fda78504bd60e74b2ca800f2164aea5034bb08b0b2ebfb04d6bac. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:51:39Z), 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/USARL1294909.
The Best Of Lil' Ed & The Blues Imperials
The Big Sound of Lil' Ed & The Blues Imperials
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2359aaf93eb937b21e5e48d69c86ca566c5436a9d5d8e67239a390c53b35be5a. 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/USARL1697203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462b2afe38c57ca339f0ad551c0300ab57f59502ba6be5f5487eb58892bbb929. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USARL1697204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9542be6d39118367113d11edcf97dbeebfd2369506524f78bf4550c07e28bc6b. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USARL1697209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e9a427474dc587099ed219bb1ad241164ae4138925c1ad973bdde09c4756abb. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/USARL1697210.
The Alligator Records 25th Anniversary Collection
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e46685d43be931bdb6a14d1b04459863d9efa938dfc6e0bde90fd5e5e930cf. 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/USARL9601106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe673e9ad5643ce18a1810a87a7560d963f99d241a94ce948c4403d7d0bafdfa. 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/USARL9307804.
The Alligator Records 20th Anniversary Tour (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe673e9ad5643ce18a1810a87a7560d963f99d241a94ce948c4403d7d0bafdfa. 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/USARL9307804.