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 0x024cfcda2bb568772d892c3146deade3471befa2b930ecfa82dff3369d6a6fe7. Chain 2 (Bitcoin): anchored in block 953819 (2026-06-15T18:31:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc1236f3-d6ea-429f-98bd-6a037f942d64.json and https://artists.proofprofile.net/proofs/artist/fc1236f3-d6ea-429f-98bd-6a037f942d64.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a00392582a24ecab6e5501cab9f95b2db38fe29979e3fa349e86776e88f283e. 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/QZFZ72303921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701fbb9a65c1c919969290e3f3e6c241c13f2b221fc0e5f26003f2b689b5972c. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZHN92357760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f63fe68e5d6718fee74284dcdc63818937035cde464de26dc76617842af491. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:29:17Z), 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/QZHN92357762.
Twenty Years, A Livewire - Rainy Day Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7ff47844b441bedadd29c0c86be15070e0939514095be5b5c659e7771ffdce. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/QZHN92357763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc48de44b111afa5e391b18b87788e5328e0cd9979b8c1f4995875451b0364a4a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWR2338423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c106ef50bb25f39222715c9270e8868891fc69033aecb61aa68a254f1dd5a95. 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/QZNWR2338424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92e40a59926e7757895f029af47a8b58db7f49a75df78cf0828a00d2a97ef77. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZK6P2422364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa4fe5dbc76c08aeeede1722aef3405a15dc880bc6e3be7a014abfedd3a4232e. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/QZWFJ2457543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf350c14300aafbbe6eb7e5b4a6ebc3890c81f9055b2298c78af1e80ac274db. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZZ7W2406374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab315cef28280853b91a95fd2d4d7721557ad04e124a44223a63a33513d9c4b. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZZ7W2406375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de64feddb1308957fb93b6db4fae5e9436542cf3e6611b07489ac9e71daa719. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/QZK6J2589563.