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 0xe7045279f2b528ef18236dce0ba6f6bae7186add4e5d91cded994775f60c0ec9. 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/26fb6839-1ddc-411f-8b30-a0e6cdaa83dd.json and https://artists.proofprofile.net/proofs/artist/26fb6839-1ddc-411f-8b30-a0e6cdaa83dd.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 0x5d5ea2ffee07c8326e21324fc1774264b8ec4195713c9731d5158334ce9bf363. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P0609430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8308d39d2884c6efbb53ac32858045a2438e93a17c9034438b82b3e3e4a1b20. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USA2P0609276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfe03f71fe83411004783120ee492be39a8fe62d195aa9cf0a369eb89d579784. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USQY51430102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82922e78cf3eabf7a8595c64262a6a846acc4c4b3681b8a4fb0573c51b4fdaf. Chain 2 (Bitcoin): anchored in block 958903 (2026-07-20T15:22:45Z), 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/USQY51430103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7eec4d4c86c58ac292c0f70719ea02768c8ab588b4a087f984feec2a61c3e5. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USQY51430107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab0b792a99e29d7d7716000a00ed47421b5646ce18904c74b3e74868dc05463. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:29:34Z), 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/USQY51430108.
SunScene Gliders (Compiled By Perpetual Loop)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a3fb342f9e8b9863feef98dd0fb7b96218d18308f271563cd5387e207a25c0. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USA2P1547759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e747448f71cb047e8d6ac0305f5240c0c56a2be716ef2713e2c411d263d3871. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/USA2P1547761.
Subtle Shifting Sounds: The Paradigm Series, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f98482913e90b9f18351e5b1eaf3d00c48a11a6a2e4fa4c17d97689c94c93f7. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBKPL1816786.
Broken Binary Beats: The Paradigm Series, Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30dac8a06da3bb492c6f95f859dc28386812d2f5c73e2e814777317d878bd7f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TW2575821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f7ab0c4e47620888dddc6d3ddff7e6ce5ffde8eeb8822a76418f722a191b5f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QM4TW2575818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900e9df536348743587bed6a995627b149d1d68a54a2136b924eb06fa70ad03d. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QMBZ92514059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f7ab0c4e47620888dddc6d3ddff7e6ce5ffde8eeb8822a76418f722a191b5f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/QM4TW2575818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d7ca9e144f17cd79fd63115327161c21bc0e2a37df378a885e2ba0d2389fb8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMBZ92514062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93dfb7f052319663247cdf5422ddb92c98ff29820dde86c46457d0aea927a410. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:02:37Z), 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/QM4TW2575820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30dac8a06da3bb492c6f95f859dc28386812d2f5c73e2e814777317d878bd7f. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QM4TW2575821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950dc8cd6abaa99d632c386cb12458c30d606cdd1e95b54bb87aef5ec8f2a1c4. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMBZ92514065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6632231c4ddfdb368e24878875221c4d8feb15e7725ed0093b52216bbcc7b1f6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QMBZ92514066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd036af2f108e77dcb9eac31389a80214dd258459f5f33de1420a6e06340842b8. 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/QMBZ92514069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f4f6c95901fecb2b9a5d4294518d312f27998c41228e88c6e4c1ec6a0e205d. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:52:33Z), 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/QMFME2519952.
Rendezvous II, Pt. 3: Reflections on missing moments