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 0xaf345b858280edad526c12d6e9400fe48525b0af9fc185a52dc5e6d967fc552c. 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/863eaa32-1066-4c32-b201-e341d12dcb1a.json and https://artists.proofprofile.net/proofs/artist/863eaa32-1066-4c32-b201-e341d12dcb1a.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 0x761811c6a17d53663b46e42db526d3d4763c83d9bf9629545a2dcf1871d76ed7. 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/QZES81982282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d82a28756bd3d785fb75bf8e95c2f121f18b02d4eb9da57b7f60613a569da6d. 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/UST8K1736420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cd4ad34dd8ee2eb60527386f3e0e9199a3155afd9a3aa9e42439a29c6793b6. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTAU2341133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05ffd24f84d982dfa9136dcde1f07c956dd4393dff05ecfd6006269a866a31a2. 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/QZFZ62245568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5c44f5a5a33fdd3681c5b35998dd94e521fffd34c269077cae856c4e137f58. 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/QZFZ22285275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1278a77a45a486ab0f1bfaa9372a990653d2a0afcff215d5ea965d3a34c54220. 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/QZNWU2130216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9818328741d61373d95b62e593496b1976538c68235a7a3472798b550d6361. 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/QZK6L2149480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5e10cc9f32710b698757b187922f4c4f07b09c20961fafc5929bff8a0f5272. 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/QZK6N2132621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a49d3c638b1ac6c9981f23d5214eb635e89cce23731fb895f0bcc91839bd10. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZHN52124118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de6582ee1d545f90450fc06d39b04b33d8a76f0330f31f1016ce89648d3443e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZES52121133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc44a75f3b2d35258c33d39990b148569d6a624359cd0b884b023f7da2d63a0f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZDA62171495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4c1bcc7bacc8cd80f759da7a5eca093f298d2c7e1508c8f47fa104d52a0610d. 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/QZDA62132630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4948550c081f6ff2c42229e650d59316088a83bcf1c92b7e2b1dbef8cbc4bd1b. 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/QZFZ32179737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc59f1c5778d1930040a829b7f8d4ef41ba388a0dfd97b47840790f422948b6. 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/QZFYZ2123383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ee24be8b40227c16d5f12a71e1799c43887c6e827fe6833a51d5994425fbaf. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZFYZ2100683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5497a6e9502dcb7c5cd297e1ed9975e778e3d1de790f96e90dc37411ff178321. 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/QZNWW2053618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274c36ba71b1cd2633d72e35d689bb22003932e4a437ce4f7ab44b5cc1d89a31. 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/QZNWQ2017274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4654b49391b88975bd1bcde5e9c63632a73cd705b4941b7b406b8637c2ce7fb. 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/QZNWQ2015507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0fd03446236d518aab94b3f2aa0a22d54a5862f9674da1d2f44c55a59c962d1. 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/QZNWQ2015491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db99d78825197959ffde49a8738d2d98b708d0a98cb6f2512346eb5cac063cf. 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/QZMEP2003580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84eb1640dea2bf8edbad72dbde5fe205cf2fe298de0e5d75d62f84b32fec8d1. 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/QZMEP2003579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08bf41388856a6c08447f74c3ce6b18446851531a0fea553db58b0988717f685. 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/QZNWQ2015509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe57bb148d0bc58800af912109ca9e0a894ec08b8cb09ff314f74f4b103e02cc5. 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/QZMEP2003578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5294ba1c07b6d3967232d90402ee7bf1202ec66562389620e701cf06b3271fcb. 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/QZMEP2003577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1506fbcc63b5761911e4e3ee36fb4ca50a3da56fe4d2209ae1abfb4a972eb217. 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/QZMEQ2078114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f6e6708c85cb847f767e7575538fd09986a3d1e22cdee6bc97a35f18a343c8. 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/QZK6G2001163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dba0d217ba11557523a564483775e15b1ef3edae6fd5ddeefc8d61e7d925729. 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/QZK6H2060809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b3312ac35b4411092b352c4ffd66aed54a3a5d479bec2bbb99a27b5cb2639f. 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/QZK6K2070025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dd15f0f060a8c0fc72d7a752fe66cbc0fa04cbdc238cf8f84a5923951f70c4. 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/QZK6P1921290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33dc24a3a9937e1df35dc27a56405d8630e54ecc7669211dd29e7fa544f35157. 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/GBKPL1976759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee901a06dedfc90df5ffa1563bceea7e2504c3c40afefdabca142fad6a1bb93. 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/QZDA71972368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937bde5b8a3f861b3858742db7eb42d2a7e50dee631582b8e21bf39add3a8758. 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/QZAPG1770742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaeeb51c6645031f621baa4931dd3ac8420e65dbb290e4beeb87f60ec5ce217d. 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/QM4DW1792002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf470c9870fcfd7de4d413035f229a628784824e358fdf3bbc45e279f5c478a7. 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/QZFZ41995093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f883e801eb799bf33bd7e0afb876e4fdf793114e0e4597cac91b4f2e07c1788. 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/QZFZ41995094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce588cc5d83424150855fea23f93eeae5784d89566a836811e62ba793d1aaee. 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/QZFZ21943894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d14cbe272b18db1c0bd52619e6f87cf59a9aa433fea031133a4ec7fad7a90b3. 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/QM4DW1750296.