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 0x173d2f4bdf9d051f125cb566e8e4253ff63bf960bdcc92eb4aaf2be9a905ca64. 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/5d9c5904-a5ae-4a9a-a0de-42df3c35dc26.json and https://artists.proofprofile.net/proofs/artist/5d9c5904-a5ae-4a9a-a0de-42df3c35dc26.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Lee Perry "The Upsetter" Presents: Roast Fish Collie Weed & Corn Bread
The Complete UK Upsetter Singles Collection - Volume 3
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 0x3b9be5396f615c6f294d67b3370870e0b8755f55cce6b2188c41afb2cf8be1c3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USA2P1412481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdcb96d76dd821680cde1ff064dde3d494293e459178fe8965f78adda2ee2bd8. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/USMC30610062.
Return Of The Super Ape - Deluxe 2008 Edition
Six Play: Lee Perry & The Upsetters - EP
Timeless Reggae: Lee Perry & the Upsetters
The Very Best of Lee Perry & the Upsetters
Reggae Remembers: Lee Perry & the Upsetters Greatest Hits
The Definitive Lee Perry & The Upsetters
Reggae Remembers the Upsetters Greatest Hits
Lee 'Scratch' Perry & the Upsetters: Super Ape & Return of the Super Ape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306aa2301759e1ee7b52d432c9644a76f4bd1c341dc09b114eb41b71861c744b. 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/US2Y30612197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15554d22cb198022c67b5e43c4c303cf22f01851b6d5046bde287d78fe4228b. 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/US2Y30612203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0504327904fdf3f634ffe8cf3ffb27887db765401e4e8b9cfd41ab93fa340756. 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/US2Y30612212.
Lee ''Scratch'' Perry & Friends - The Black Ark Years (The Jamaican 7"s)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697963388f37511a6ffeb3bcbf764a295830bf9b96d584b17de1218ebdafa0cb. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJE0706325.
Lee 'Scratch' Perry & The Upsetters: Super Ape & Return of the Super Ape
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda3749fc11ecea862045c80a0635afd738afc65ce5e4da3aa773161fac079223. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBAJE0706327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d3d7fe4097ad4f10228adbe3588bce6a4cfab760d7c4b799880424a54b5bbd. 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/GBAJE0706331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc8fdf76b0dc456f9dc785f7631d285bf3e7709931164ff3d208efb5f1d750a. 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/GBAJE7400489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d8235c40638468821c462d30edcdc1f14e635915ea4153e7664d4ccea36ddf9. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBAJE7400492.
Sounds of Reggae, Vol. 1 : The Best of Reggae and Dancehall Selected by Sly & Robbie
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1904f6c8f3148184705d4a78845a69f6e2fa65b8c160a114fbb6af969974ea07. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FR5U11201644.
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 0x5eee57422210efaa5420df440e8b006f8ab2cabaa7e0547c8f309faed2535916. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/GBAJE0402037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64c15c789dbd2c63073fda4091e8470c7e6c75eb07ce85d6906a088d17126bc6. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBAJE0706328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a3d59673590a032ff726805e422994afdb3546d897e00b65888a59c618aa123. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/GBAJE0706330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40dd0f7d2d19debf51939c41802f9fed631ee7f7a641f0f1161065d5b3271788. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBAJE0706333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff5128c44b3709f236afc5093525d733af3dc0826322c912b9ba150a057db56a. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBAJE0706334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d8a6521718238ba3ab82f134a533676bcbd2ca46d0542ae1e0d47c8b787f479. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/GBAJE7400468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e90d17de19ea1d44f4c4d9c5a150f532b2017d3e679284ac6fdd60aa179a7f. Chain 2 (Bitcoin): anchored in block 960157 (2026-07-29T22:12:10Z), 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/GBAJE7400490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be5d8e4fb3d396bdb142dbc5093636133ad873c65ae95193285ead2be1a6f75. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBAJE7400491.