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 0xf2cdb92d247963a7820c43becb3b5a037e8be8b2b3a5f594ee083cfadbf43679. Chain 2 (Bitcoin): anchored in block 954516 (2026-06-20T07:04:44Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a14c5cd5-4231-47e2-bb96-b9fe0e1a3ba2.json and https://artists.proofprofile.net/proofs/artist/a14c5cd5-4231-47e2-bb96-b9fe0e1a3ba2.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 0xeacff15c9f6c07fcdecd5a57b35d2198d54cf2f6713c94ebb391c097aabd76ab. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZWFK2470979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7afdd2850e0ced3520d6936cc4f75bb867834b6f453b64e8a6464d5d1e3c298. 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/QZK6K2506846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034bee276afa79bc10fccf441b2b6682705a1efef5aa2eba609c104513381086. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZMEN2543233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23aee36a0f81b9939205625d0da99dec5bc2a9d77237cd69834fac58f3c937e2. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNWT2570680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a06815c073dde473d9a73cdcdc8388fa28a31261821b5c279e3d97486747b4e. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZRP52578351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4993edfbea59dbfdd9fc212b096e966995480128caa4500b203ab8413f1c090a. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:15:41Z), 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/QZRP52578353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9beed5c02e619a30eedc624f8ce1695da252a068bcd4d0c03d4440236bdddd0d. 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/QZRP52578354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c995622113bdb247fb0cbed958b5d4a32f60b22dfea262f6ab82534df3e8241. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:17:48Z), 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/QZRP52578356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfe189ee0366f95c3fa3d7e1acd2906065b4f3fda4ee4ae90e1c5d71c26883e6. 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/QZTB22502383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf942d63ddcccdfb69021ca583d13ecaa0237b5480dd3ab278cf5ebd29ad3fba1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZTB22502388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6448af47bf07c58d46e39fdb3386ca18cdb520598ff5321dbf7cf730e55e1cf. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T05:08:13Z), 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/QZTB22502390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd26c6f86a6e596560169d8f8fc276298460fef226d76225588030a2a6c758c0. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZWFE2558761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81637489cbf708c7f41d5bbe2550861bd696a207ca5dae300130dd829669146. 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/QZWFQ2503937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b9b69d3159805c7e320eff8279c0f09b3f8b2d9efaac5ced6f88c089ff2fe90. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/QZWFQ2503939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f1bd08df5b96b0f75f1b5a57cb1cf648f7ed155889d8eebd87ec048eba1ddd. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:27:43Z), 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/QZZ7L2567665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6689c4c28bf51db7916ddb83e3bbfe19766442dcc289a6a81752aea74eb7e5f4. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:46:37Z), 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/QZZ7S2544214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6c0dac5f86e603d8efe2577742c68bb64c54d55f4eea42582d98c561cd0164. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZZ7S2544218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44cd0fd48a7042284eada94ad85073d0caf25aaa3bec2f854510445b4b9e250c. 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/QZZ7W2561943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f3deeb74df369ac905f1b5fb3b09837957c1f00d801012141824f504baaa14. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:42:13Z), 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/QT3EX2543002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cb8487017d4ccfc12a2f8d63ee1bc32438e254b1998778e7bd95d35713b675. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3EX2543005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd3a94bd5dd81272e4413c10afada85543c8c2b6a50146e86e554e9542f6b3d. 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/QT3F72592319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3257019d3651c3fb7868d64c551c244848a8ba52747a5ef1d5327d21f0944d33. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QT6E62531648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd645b1e6bae5f6c1bd0614c2b68ca9e56eb16310dbfabb6e90ffaaa9664537. 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/QT6E62531653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cd71b3161921404af974f96e11dc42d477a378987f7ded04f667bb48c3eda5c. 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/QT6ET2531754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd660620121415d4796bcae5c7cc28b160d0c3b4ea4cf2a01d0e88a29e58a8aa2. 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/QT6ET2531759.