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 0x5f555d71b2f44fdb7f616864216a72266fcb00f9913095d19a0e3e84ad4f100f. 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/3179424a-701f-448c-a6c3-46d676638233.json and https://artists.proofprofile.net/proofs/artist/3179424a-701f-448c-a6c3-46d676638233.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 0xd8cbc92335a0134e7d5e6bbfdb52aa66b2a0f51432d654c0886e4e7c9cb0acb9. 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/FR10S1482936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fb8d1189c6e2f1253bb62a0ee26cb8f351ade30991279c74c28d5fe128e42e9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR10S1482937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be545e6f339b454cef1354c46028a4307c9f1d081bcaf11dc5b8221ee7f9484. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/FR10S1482940.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523243deea3131a73fe8fa364a46a384d20637752486cc48c57fe788f27388c0. 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/FR10S1482941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c893a635697328cdc78930b24f040e2a673623ef2d70e6f5bf288f1860ea0a. 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/FR10S1467755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x771783dfc830a7b784e0d92b9aa0720b1a68eb31257bbead26a837ab3c68dee5. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/FR10S1483001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850af34acf165fc8ff498003de09c2b50361cfbf073113a5ba65bd1d7d9febe9. 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/FR10S1483002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bce453b29cac3b999c903d498a5371896dfa2cf1345ff2300df345cc16c03f. 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/FR10S1482891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a18b07579b853bcbf14521f62ae997f1aaebfbbff62ea68d0136a8d2f9efb3. 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/FR10S1482893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb960f663f9fd6dee9780b29c61bb0b425a833a0e20a239da485f9520520b363. 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/FR10S1482899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d93b417d1c38ba05b539255ddf5896094cdea1dbfd6e2d841e47d9f15891630. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR10S1472419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x201ab1994b393ab95a23929ae179d843fbcfe041424510d3a944740c15973f49. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR10S1472422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04391de06c0059660ad585220984087faf29432b242499207e1407e2204bfbf2. 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/FR10S1472424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dffa8d0885748b191fe255052a4e00b155564e0770d8a0b2f4e5ee9447a0bc. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:50:43Z), 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/FR10S1472425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6563e6946a8e87c112bb1344235526d6bf79e68b0fd4c82db5ffe1a8d5412f15. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/FR10S1472429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52d46b98b79821185d237f05c5f6de67a7a3e9b3b69a259eae11e379f481425. 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/FR10S1482920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0ef695a88953393a08bd8cb889056e7e99aa77be6f9510fc966476d2f3a223. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/FR10S1482921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718de0b3bf4252bc5c5d432166d4abc54ec7a102489257fb5193c8ba988d9ccb. 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/FR10S1482924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8debd500158886debd5d7ca0bc34ed17184cff3743e1714f58cba7ed70e0ef46. 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/FR10S1463221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa586d7e00ee99e3fabb96f7b6efed4db87f2faad84a8af6441521334fee5c78d. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/FR10S1463222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fcc6ad59538e492066da7e1556b557c83c80dd992998a193c5a690c94cbce70. 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/FR10S1463223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7cfbc6857220a823f28003916cf6c3a6459558cb1bfdae10fd27eb6f0dd5cbe. Chain 2 (Bitcoin): anchored in block 958051 (2026-07-14T19:14:42Z), 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/FR10S1463224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc835fe512bf2c7b66e5791cdd1c92b29b125f118717ce27a0a39bfd7e5e0893f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:55:55Z), 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/FR10S1512265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f68628cbee1d46edd2328f6b69b9d4195b005fab04c26fcb442dc96c86cbd55. 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/FR10S1512270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f34c0943b5caa8f492b001a9e28dd06d32c5acadd5a990a1f8060788aebc0a. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/FR10S1512271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335c663017e434baa2a8e517f3399f2f8165c219ffe789c9e1778ea37d47a904. 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/FR96X1644217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406d2ba35489395092c1f7576852f3a8ac7cf820b305ea2a8db783e15a6943a2. 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/FR96X1644220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6502f6daf7ceb7f566093a257cb13e130c508d76f8b0a8246376af127b843fe8. 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/FR96X1644221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf240d4c722100df9d8348e6ca8e174794b45ebd44fd688a6f4a87fe82423ff4b. 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/FR96X1644222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf080099993d1493ea71165443d54da075e4c42b34479b1688ecc04ae1b72a002. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/FR96X1644223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6acd5e5b34a25e2cf3c5e59c90ec1453ca3bb3a843343b7f66d1abfd6b2c8eb. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FRX201963090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7adf6f4aaba0622682b56349d2630cafdfa0ce86b0e7272146d991eb6bb439c8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:24:01Z), 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/FRX201963091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a65190dd91dd2f484b77d0156ae3d7ea59460837d97e7578316de465cddadae. 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/FRX201963092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c704798c2e2fbeb681b40c249850e35bcfda112fafd58f4e260e8fb879e71c. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/FRX201963093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x996b13cbfffaad3d33480845e7bebbcdef13b887ff74d4fe9de8dcf4f3f2b638. 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/FRX201963094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3f5a582483290941bfc60a03fa6328d1ca7c34b5fe808bedc1079ca01dfa96. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRX201963095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69bbaeeafbda8f799a3a697e2c22f154fbe900597370a63bccdb81ef8b15fbfa. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T11:05:15Z), 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/FRX201963096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970a6a8d983a06dba6b9ea151da11686e8bb6b8e3902d4abc0f29497939076cf. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:55:25Z), 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/FRX201963098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe4d42d91243e38793234cdb4d8ebc9692e0a036d09752fafcd7472f62e6128. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZ5AB2463326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc9739d72df1b24375ca1a89d040fdc5452538ec8e0afb0bec9c5763846d0b4f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USL4R2306861.