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 0x481a483732068661d33819e71a913239b69a6a542fec9ef6549c56925ca55fed. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f597c827-e919-46ec-bf38-0541e4e0e5b6.json and https://artists.proofprofile.net/proofs/artist/f597c827-e919-46ec-bf38-0541e4e0e5b6.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
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 0xf3dadb184fcc97797d5436b1bb25b3f35ba7b3bc6619efe83c199590d7a5e148. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IEAOR1200507 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb812b47d7236f275d66bca7614d49877d0f9c4f473d74cba4588b93301f385a4. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/IEAOR1200508 — a six-check JSON result.
The Gleanntán Reel / The Sandymount Reel / The Beauty Spot / The Ravelled Hank of Yarn / The Midnight Reel - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c202f5c0c75a186b57c2177d0f16c01eb3a01bd80e3f38d6906877ac16176d5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006599 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc129ed66cd6612be394b2a0cc00fec1588d3fbb27048d6f12fe0268eb27592c9. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006600 — a six-check JSON result.
Bill Sullivan's Polka / The Britches Full of Stitches - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a5c141c63266efc7826a270898b921b403e46d6aa173863847940f00c66d3aa. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006601 — a six-check JSON result.
George White's / High Drive / Fiach's Fancy - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730396e50a60293ec69d9583920211918545aebebef9ee8fef3c77f1e6e52801. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006602 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b72f076e48bb865564caee063b6e25fb7d41821a557ef263581e921bc4dcf94. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006603 — a six-check JSON result.
The Steamboat / The Sheffield Hornpipe - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc063ccdd1025277eb31183342be6575ec1cca30f04a7d27caa9626245e60d845. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006604 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e120d20ce1b2f6d189feb5e50e9ed97918dfec838df3bf947b447d40002a4e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006605 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4ef8c8847ba678e14e2edeb3699a5da373257128f843cbb5dd6775ae0d3418a. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006606 — a six-check JSON result.
Far from Home / The Sally Gardens / The Sligo Maid - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf271f7409135eff9d53a46baaebb8ca452c72a9a486f5b10c0e0c19f2fe86218. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006607 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0809f1bc030994156b0d0d94fbe6d779b1da997ac183128275f36e9980f0bb. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006608 — a six-check JSON result.
The Gooseberry Bush / The Limestone Rock - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fba91ca605a713b53a58e56facb279c85af3b947815f5bda556d4548ef2aaff. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006609 — a six-check JSON result.
Bean Dubh a' Ghleanna / The Ace and Deuce of Piping - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca35ede8c884b00aa3e9f9654a36b3f42b1a213c0665ec04e4c1a3af186b066e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006610 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a6c0c7b5671c95600cf285be8e2157216b9bb99f29d57a5803d0d16256df81. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006611 — a six-check JSON result.
Step It Out Joe / Murphy the Big Man - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5050ab02c02f56aaf15aae82c3f8a75396f0386ec5d881c7371d96c7c5115a. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006612 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcd44b90f604970f73a49905c460031a173f36d4f97a34070c119d60d5aa12e. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006613 — a six-check JSON result.
The Orange and Blue / The Braes of Maar / The Keelrow - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6448dc45c1476164befe348aa82fbc106e1366fbff560ff6f72709e7eca1564e. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006615 — a six-check JSON result.
Old Tipperary / Down the Back Lane - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d288d0433854eedf6dd699fc75ea3aa6504e35bfa726808b8bfcf3999a61aac. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006616 — a six-check JSON result.
Devaney's Goat / The Green Fields of Rossbeigh / The Dairymaid - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3380e85161bc7ada54f3325e0c74c397f677dd3ad84c2b364563253a152531dc. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA371006617 — a six-check JSON result.