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 0xd1fdaebd366450746000c72f4d86a409b9c16b9342f89513016cbcc8ec9a959a. 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/6fb6b01f-5886-492b-9d71-a3082b3b3763.json and https://artists.proofprofile.net/proofs/artist/6fb6b01f-5886-492b-9d71-a3082b3b3763.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 0x717ecef22bb247f7388469290e677d96c08a092f58f0e19e9718b8e72c3f1f2b. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/GBUM71503643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0838235544549fdb0e9a0b8036a3fc196e03f4c335b548f98966a20d5c0554e7. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBUM71800905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42ad57e2a35d7195fd0c8424f8659cc602a86d970b526ecd25c7057ec5b191f. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/GBUM71800927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6995f01d584ab6dd335165e090b84cbc18fe698e11694f1f67d488975f836a42. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/GBUM71800929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf814ae68801484c5d3bf62c25b367e34d2c69c0332dc0b4ad665c2bf96d6269d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA2P1950731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b97228d27b4d08dfc9f4b2ac4d3677ba05679bbc507d706d32c426da59fd20d. 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/USA2P1950973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698ff271ce6e41ad9852759f5128358985fccc188a6df06965bb265554ac1e49. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GBCFB2100709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64efcdb2acefff25501a3c9d7bd02ffb7664de4311f5f6497635be3a8e96858. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/GBCFB2100705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c0ca396437d738f4477187c6577961730e804cc4c1dbc9b1a691baa22b7570. 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/GBCFB2100711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dcf7a127d5f45109c2f48e7d8aa7c88e509ead7ec0afe5341e5c9bb6a3ae5f. 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/GBCFB2200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c85b42e28b9c2b4ca32fa64f322bd645ae22e98898def77e1c87b13a754725. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GBCFB2200922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee29c1bf8479a8f840be7bf43cff93ddb96171d9c940676802d97407abe89851. 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/GBCFB2400539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a80bbd38a42bab4b85e573480be03bc5b928100138602db99d046d2df933298. 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/GBCFB2400540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd581ceb1074d09a0ee8c2d50a363325340bfbb24ec4cd1e70fa9974e1c639d1f. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBCFB2400543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad5d3e117a3b475ea33375a2006ff3d18e281e119d9fd3abd935b11f142dc0a. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBCFB2400538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd5e7aa659fcb121586d29d5aee6c64a9b6269e23b18319ac4e4f0a1153321c. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T03:48:36Z), 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/GBCFB2400541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c85b42e28b9c2b4ca32fa64f322bd645ae22e98898def77e1c87b13a754725. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/GBCFB2200922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dcf7a127d5f45109c2f48e7d8aa7c88e509ead7ec0afe5341e5c9bb6a3ae5f. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GBCFB2200459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd639ba83c50470a8eaa65eea4002fe42c912d8758d3a6af171fcd9bb457b1300. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/GBCFB2300830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348b4e270458264f267b998ff651ec8156a8e9fe9cf01a414666b9031ca1a09a. 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/GBCFB2400545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a10218237e8d66de492413746de1307bec979b7e3b84670871a1d57c554253. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GBCFB2500045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c85b42e28b9c2b4ca32fa64f322bd645ae22e98898def77e1c87b13a754725. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBCFB2200922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e4532567e4736cf666f1019985b3fbd30efef4971f47e621f4c57819422c3a. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/GBCFB2500377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e4532567e4736cf666f1019985b3fbd30efef4971f47e621f4c57819422c3a. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBCFB2500377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8452d833d858931707c2f0371ce18a08c24d2c646a864ef36223267fe1768b. 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/GBCFB2500259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cb7045c0275d5100ee57cb87391a58feb277e5059db8dd02596aeae6250c14. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/GBCFB2500218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c294705df649d95076652e293bccd85a911e8c429e1f2782c89f6791e720c8. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRS711600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb36a4643030bec8736d50093b5ca6877cd6bf775ad7bd7015ad328ffa94233c0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCFB2200670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ffe758ae67490db80ebae88f73ec65320c0448fe3a94626e995ba3e5603df1. 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/GBKPL1675279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf9e6f09e563c2d5a60522428039b396cf6456f871996d1bb5e248e20a6aa2f6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBGLW1900034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5651a71d9737cd927109b68f683908a0c10010980f3eb313fe04a3f1de417c22. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USRC11500732.
Wendy's Yard (Gilligan Moss Remix) - Mixed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655883c79528393b68ab38514dd29ca9939f9f23494d41e36819186ac07e1247. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ZZOPM2105093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826dd93c475c3ab37f64a49f392065acff72a709bfed4558f1360bec553f6982. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB2DY1400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe59e881dfd91e12dddde8433c2f28ad7f1f7d6521ca32d44f2547c8119c8a4ee. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/DEVF11600049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2488b1f1c7777a49ea0176beb7398510ed2c48193c8122e2725ae48bb16c9aad. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QM6MZ2454902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd272a6983bd719a7a844cfe33234de1e32e6b0188b244053d249bf36613bcc1. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBCFB2100662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d49972780af423b4baa5d512c2c8272fed6f07a01c098bb785c0f076d4724. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USA2P1950743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2488b1f1c7777a49ea0176beb7398510ed2c48193c8122e2725ae48bb16c9aad. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM6MZ2454902.