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 0xbcc5189a79df76d1260a088fd7c418d941e507408363fe74785c6d0195ab781e. 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/585f01a6-5574-4c8c-ba41-79ec46ed0e8d.json and https://artists.proofprofile.net/proofs/artist/585f01a6-5574-4c8c-ba41-79ec46ed0e8d.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 0x97a1de7e3cd4c4129b0919b6e749993d46be5aacc0e1319a9762b0e5a2ca1fc6. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QM24S2005531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2260ccd63ecc7c6756f34e82337dd9ae4c7f72fbf8306c9e680ac2ce130b1c21. Chain 2 (Bitcoin): anchored in block 957540 (2026-07-11T08:19:50Z), 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/USBVZ1980002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9001f770d167126228f076ccacf335a3f6e353ce9d9511299e0e96d3326df7e. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USBVZ1980006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf63330a8cdd28d394c4ef92286200731b6a5d6c3822dc0523c663d1d95a5ffb9. 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/QZHN42097130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cbb2348ef0034f900eb66cc67a77d488995aa8738a8b241deb0c8c83cdd41c7. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZHN52089116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff84a267fda4d53a0273bf81643da59dc49049ecfeba3c8f4e80dfc29949177b. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZN882079544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd82bdaa47d32209464d829b8cbba4e1a5557863a0c1faed7d7d27f1d8f9eb5f. 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/QZNWW2274160.
thursday mornings (after ur therapy), and
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8362a5511e8d5e1c4cc861a5a1edc5a513c25f330e5ee21213532ba7da87b3cc. 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/QZTAS2372321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb538bddc3a2d23be8602c8d3cd6440189e710d66780b49a0bfa4104517394e04. 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/QZTBC2347513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a01327fffc7f720a1425ce69696c776859c21d408646335524960696e2518b. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZK6P2458603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc1ca5dd118a721a073be03056957d078d7c68b369a62683ca5538dc03131a4d. 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/QZMEQ2415458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f514e3480578469e07e115b0cd75f015e916cca37617568bd2cef2e68cb4fc0. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZTBA2417956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f43d16a7302f53a374124690a8aec37734e52a205ac00820b20767db1c91fe2. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZDA42482279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fc2efe6ccf45cfcb981c016f60cc864fe62444d307ae753857f6143c6b11209. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZZ7R2439400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c5bdcf8e2638aaaa9bb4c1b2d208c3f83d7cb0033627c2b35d13daaa8495c1. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/QZK6L2526085.