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 0x5cb6d6d4aff43352bc2b2c9ba7e4275e51e2f1fcb19d50b0457d941f805c60a0. 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/7d6518ef-22ff-425e-9e93-f6747b3da04d.json and https://artists.proofprofile.net/proofs/artist/7d6518ef-22ff-425e-9e93-f6747b3da04d.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 0x36968f860769432dfc3dc9d7f95327aabee6c848c28af03a5c484b7b297165a3. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/QZNWZ2118878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x646e458739880acdd3705e698fcdcec173724bf412cc1237e6247b0e6066b2fe. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QZHN42215736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e0d022d38a926f0ed427623f19cc9e3d011b64721582930b6965f25c742224. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZNWX2273787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36968f860769432dfc3dc9d7f95327aabee6c848c28af03a5c484b7b297165a3. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZNWZ2118878.
Every Time My Phone Goes Like This (Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779a0a61cd6285762e6253276f1d56061e28439459e9ddc819daa8e5f9f7e23d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZDA82325813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37de73ea818ed64c48d9b0a876e3c6a801d7002298b66e72d223efb52b13ec73. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZK6J2365871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90f2c79a204452fb9acfbead1a6a828eccc01630fa8a10da51921ec69623858. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZWFG2360718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf193f41c85b9ee10347cc2b63e7c9637cbae9ade40aa6932b8eea7697911b7c. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/QZK6F2452024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bdb603418122f0d0e52ae1c31b5982f2b8dfa4765602fe66878fbf28f106ce. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZHN42495831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779a0a61cd6285762e6253276f1d56061e28439459e9ddc819daa8e5f9f7e23d. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZDA82325813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf193f41c85b9ee10347cc2b63e7c9637cbae9ade40aa6932b8eea7697911b7c. 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/QZK6F2452024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b8872617c0d0a1c036cf6fb0b47dc2989508a648da6b9e2b99b6a72b6dc3a0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZZ772402237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd517a7e7881b8686d4084a4252198bc033083ade20389429bc12b735f641f03. 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/QZZ7N2482495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5951fb729dabcfa4bca5b3b9a965fc767149d5ab452302d82a688ff18a64a59. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/QZZ7N2483797.
I better rest my head for a little longer
I better rest my head for a little longer (Marner Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493943079db14cb4f4887057fb83a1f59ae19c45258865f89634cd1cf18ba73f. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZWFM2582951.