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 0x2143659458f8a272107d2d64d3ad9be42e071dd359658743d6c4af5237eb6cd1. 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/3a492eaa-49cd-4e2a-b005-5dced326c71c.json and https://artists.proofprofile.net/proofs/artist/3a492eaa-49cd-4e2a-b005-5dced326c71c.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 0xed57c954d718a724a1c210bd76bd30b038843d453daedb5e2dc877974de1e65e. 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/QZFZ72510042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xababf974afebe34f0ab5e2d4523c82459be4b2f5d578ae1e2d46ef9f9b1ae783. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:59:56Z), 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/QZFZ72510040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ef48abc485c4d4c3d1e63f9d5c8172c9160907aa7f83c4da95875d8347cb8c. 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/QZFZ72510041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe32b01d3fb7d2d320af70dc5dc4e694477d720cabe8da16aaf601ef95f388c9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZFZ72510045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be38c01e7f2142bd397076c88bd25f4041dc110bc9445c360b446c8f8e2fb63. 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/QZFZ72508101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8c509d25a16ec6d79eba59708b4b2eaad8205a6c6e66b578cdd9724012e015d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:53:58Z), 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/QZFZ72510039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753a12901495e1486b74ef3f69389f7b375a238c496c85af0ae130c940a3cab0. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZFZ72510047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d596657257ca49a5e13d8365b8cfff96d8c4d089240fae02b86180b37e2dc5. 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/QZFZ72539488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391948dc06f2506f22b82cf4a72e4e2fa22097041e82963f189bf9152797e33d. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:48:20Z), 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/QZFZ72541289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54a4c567bde0ddf130ad7dd8625852096a35a002b478e214e9937eea197e33f1. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:52:22Z), 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/QZFZ72541291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b8ad6b5b31e8ab0d100b70dfde09591bba2b39d44114b3ba2c1593c610f41b6. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QZFZ72541288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41293957af4d9789c627c7352709c274ae587cb769151af7f51e4ccc85a84854. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:03:30Z), 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/QZFZ72541287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c8d47933dac4720a515d0d48e4755d8d25cac675c606ccce69e020a51a9709a. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:10:40Z), 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/QZDA62541238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cff3c98f5cfe9bc1f218d75bfae96086e12c357b12c31318412f75a8ff19b11. 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/QZDA62543371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0586d9e6e64e4d021f5a4b22375c12b168d3d0638e7f642944e8def7fa03526c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:23:16Z), 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/QZDA62544900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a14614ca4795fab7ed1d6847b1fe44bde3171830b0f5ebab3dc3dd1d72f89c1. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/QZDA62544901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11a75fde17d18d0d9da58d8f18e907b4e0490173dead9fe142c3b87e3418466. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA62543369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cbf39ffdd40aab69fba6303c34b7d4074b26c03fcac665c2e1261c3bf370a98. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:44:16Z), 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/QZDA62544902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab8e064663c687f8ebb596ebfd3c166461b9740b49daf8316f589f8742076ac. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZDA72588316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12520ad90c84ac25af5dae6f90c2eeaef40d83f1d1f75f5147a168a1a5b7d454. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:28Z), 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/QZDA82502023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa575f9ec4831d47dae57966c7024165ee9d7e290388397708c8ceab48c5b97ee. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZDA72588313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd82cc93575b7e54bb98bb05a3b2e985d8b0ae0c6659021fa9d7090f80150d8e. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:23:54Z), 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/QZDA72588308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef1ac97ba2e269e1c488fcc75378dc723c342ebee77bc5d8015e429d376b967. 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/QZDA72586569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc52da95e06cee7686564075772a449afe0d1710069203c5a57fc686522af93. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:36:05Z), 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/QZDA72588323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f99f053003f230aec497eff0fab436c51f061aa8d02d3052fa71817f55a87bf. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN72593087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731428aeb41c1642be66c9dec3a3f7a2eb4c27ebc6188c54f13f418feb127bce. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:48:59Z), 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/QZHN82547523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3950727a2702fece2cfb07f88bd2e6f18948d8d27f362a91c8cb7d371f038b3c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN82543692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f0203e02dd6a194454c8d866e05ad553990b34bd6052f19aea47181d9c8cc0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:59:25Z), 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/QZHN82545439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0e96adae203b656550db5676d012e143095164460a618eaa1f48d0d16da096. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:02Z), 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/QZHN82545433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f34c117a919a1210b69d1cd7f627c94c130b29e64e1a4538026b0726933cfdc. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:29Z), 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/QZHN82545434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bcf7f1e431be851c46942cfb1230d37a0b6dd6588d66fabe53750ce26604604. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZHN82545438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763c04ebfe6c19eb6ea2fc8922872d2d7e07c58c22343b6a788798386ca9f60e. 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/QZHN82545436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a8058d16e2b368fc70483f2ce1818452b84688ebf09ada7e3f0e043837db6b. 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/QZHNA2580878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35d08259574d4a391934862d2e550c50bf6142c61536c22ae0fc2b4533a358a5. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:43:38Z), 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/QZHNA2579457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a342173b0ba97be6a598f3eb40e65f918b9b3ea504b17240d20e8e3387e2dca. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZHNA2580876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe017f2c5b8be0af0e7b9c7c74e33928efe87a5c384f24eabb57df0ece2a7530f. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:27:00Z), 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/QZHNA2580881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0174fb1ef502d367b4d8c9f998d31b6440387a78818878cb669151c5df3a0c97. 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/QZHNA2581027.