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 0x1fa4175d6891ca4b6122a396ac68662d1930eeb8b0ab70d112badcd920c19031. 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/29e747f2-1280-42d9-be44-bf6544d56261.json and https://artists.proofprofile.net/proofs/artist/29e747f2-1280-42d9-be44-bf6544d56261.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 0x8817ab252963024587618fc4ca97f0135ad613dcebed85ba22085f1569e10db4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1374061.
Drinkin' in a College Town (feat. Jon Langston & Travis Denning)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52cbe199526feedc7e7249efc86ff0cad183167441dca220457b4f9e322d85c. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/USUYG1416062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8817ab252963024587618fc4ca97f0135ad613dcebed85ba22085f1569e10db4. 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/USUYG1374061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4b330cc520e48a90a6559f8852b3d689b5ad881a6e634e399091e70062f558. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1367236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10987f5c7d8537a8e6b2f2b15a9a26fe980739cb636ab57e1899f0ac1b84cfe5. 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/USUYG1367218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd98125a0050bba694e4fb2873564d89673c37db2c6344d0cbfc7b0bf8935f6. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/USUYG1380773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cc76389fa32451aa39ae140c9efca4ec2d2d35a832094b8886ff4eb055f7787. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUYG1415058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52cbe199526feedc7e7249efc86ff0cad183167441dca220457b4f9e322d85c. 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/USUYG1416062.
I Can Tell You're Small Town (The Back Home Version)
Making Up My Mind (The Back Home Version)
Tripping Over My Boots - The Back Home Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f54a9d3e756095cf06fcbec7f4ff0189eb7e09ded763ec1d70c81ca49f0267. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM24S2300238.
Making Up My Mind - The Back Home Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4148fdd78058db912f6400041e9c22afa7f399ee5ecf50b0cd9cb8e0e97e627. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T07:27:32Z), 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/QM24S2300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35606a4db1e7a0acb981622ec87ba43f726f12628ff413bebe8172a580ba5b74. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/QM24S2303296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5900e95ee7c1d148c04e4108a0852e0c82839128ddf34412c90e3871fada5fb. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZRD92406028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x530814b4fcde07e29b82181d44636ecbda174b2ab16154603073053de163a0b0. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZRD92405671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db331357db0d2df0f7063e6bc4ea1a518b25f1ea98329158a247805de4b8371. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZRD92507203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83cdcf525a1c165ccb728edcfad8be15b668be9116296c51c8a2e959311bb997. 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/QZRD92405213.