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 0xdbf8552f64e19cce44c536c8f691406b9610d4aa4e2561145fa55c19b08f2c76. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a9cf684-c2af-455b-9c43-e6b541df50cb.json and https://artists.proofprofile.net/proofs/artist/8a9cf684-c2af-455b-9c43-e6b541df50cb.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 0xe5318b40a6a4af60520e00b8d416d8452899d3e6d02b630f9e25eb4134aad4bc. 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/QZK6M1930179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944da00e047d5ed51fc2b47d91147665066a3e61ec091ef3e7bcb08ce2ea776d. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZES92039640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf452e8ac1a117da51aa2f279f6f0615af05d0c7204d0fabaf3011ceda64e59e9. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:29:55Z), 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/QZK6G2202547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf712d1e715a24837fc18e2b4e3c13160f368480a4d7a7cc6d7bcb33bc0e7f53d. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:04:20Z), 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/QZMEN2230920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc4c39361f44d2d21f6ee3d132252628dd8409364ee7ca4334956ce1593d745. 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/QZMER2251924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77cd9e0e8d49d0ac2f30ba8090e67971b0adc68df3aa94b90acf6ca8332f5d17. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZTB32265561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504518a966a1d0a52707dc8dee06ae8bc78380a498d196c7b9b26e2e0b583014. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZES82308669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d317831981d482e8dfc14fdaf357ef2736401e43ce30a3f4da17443b61e761e. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T11:20:04Z), 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/QZHN32300725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab412127b867d9e18c4be6aaae3e54b21062635928cf2fea6e189d2dc71ce55. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:51:26Z), 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/QZMEM2304774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2693955179fcd94b2dc4c87e289d78255413eb681611dd61f2de5e2e3c4253. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:04:47Z), 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/QZNWS2333859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c99a75132250ee2e19f2502000c47577f69230c9229e391417df7524b4433ec. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZWFP2326642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe94fe10b4571f71f0fd2f8077ab101d05c309c72d264b20fa6b90d61d34f56c7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZFYZ2455000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c5d90a742b8ad1de43238affd0a17f7ced53dae826cf13cd47c04c2f54e6b5. 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/QZDA62448155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e08d65340922c6486db40c3ebfa3f36ab09c229aaf5ec774226136167914bf. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:43:32Z), 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/QZK6Q2490962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d557677d0414811e28ed24452d9395b8dc8a2e8fa738a4e14d88fb122675539. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:54:57Z), 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/QZK6Q2490963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc65e3671c3e8bf9e806eb0115728e4eb1ce74fda87288dd409068f20dfe96345. 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/QZWFL2478267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe73df67780b8f0ab7d26e21349a9589e7e5bc76acd2a4ca43256b66631250b21. 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/QZZ7R2443014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15ef059cfca282181dbad202c8a699bc3f7a85a2d6c4ac83d6046f224fbfe5b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZFYX2554222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0a9bfc6ca1989f151b003d6adc6bb86afa120e3966be688e0733e3ea985b30. 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/QZFYZ2537047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc543839eb36c49a13b93288eedfd4ef341326778c06a721eb9a2ee503e8222e2. 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/QZES62567512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc426fbfcc68606c5009dce88c0bafcf134f87ccc3b33879750cee1ea2008a819. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES62567514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0a9bfc6ca1989f151b003d6adc6bb86afa120e3966be688e0733e3ea985b30. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZFYZ2537047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47bbb37293471537012450c6e4e38bc9f6033a3d87bc00dcc0a960d037470bdf. 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/QZES62567515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c798fe15346da5759361eaf3d93a233333c17940d3ed12f795fea1a127bb9a. 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/QZES62567516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0548ccecf2e01c78c3d92663a45b6727321c608beb7ff62d19421cfa76c1214. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:49:34Z), 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/QZES62567517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6adba8093b352a01dc7b7f2fb8c0119bf18ca49ed64d1171c83c47ad5dff1eb. 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/QZES62567518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe16a475717e0ee024e7c24578875538e7d1e22ea0a822b0f4d0df4e060b5289f. 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/AUMEV2555433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7080af6e152edd1095321c65a730bd505671157546b13e871fd34407e9ece7ad. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/AUMEV2555434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3692124f27e1b41b6f186b497cc30af368ef024fc3b3fa01b082b3b6b38a73bf. Chain 2 (Bitcoin): anchored in block 958590 (2026-07-18T17:28:56Z), 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/AUMEV2555440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1824bd3a7169e2d05a87dc7e283d10987510f97bfd844bc9c545445ec2ea1324. 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/AUMEV2555438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0be82df08a264f5c442a1b22e922c602aac565aea1e2c1f9654e91b53a9305. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:36:18Z), 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/AUMEV2597565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93550075b8b413851707ca77d238a8b4d4a48b36a88a763d5c8634c48fbd11. 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/AUGBT2543314.