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 0x206209e597ba0a2d99bd01a07c9c151b646a67a43b6b4241f779355a47d96ba6. 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/537d30c3-c5ea-408a-8474-4240d4621131.json and https://artists.proofprofile.net/proofs/artist/537d30c3-c5ea-408a-8474-4240d4621131.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 0x9a7ce943a5276ffc45a0249c990f769d82b04663e9cadf836dba112e1e3a1282. 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/QZDA82371991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed19f487acd9a3dfb338a72318d161866134664deb0390dd80ed511456afb2c4. 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/QZDA82371992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f6687991bcdc9c1a32757bf00cb5382f4efae7949fdcdb4688107ef8372541. 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/QZDA82371993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30306608ddf285118cc55115236f14dc4b99b23007b49ad32c1ee5857b91682. 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/QZDA82371996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3aeabe3bab61044a6121f9b6be2e3bbc25b397468e7f66984052b193a6a7c5. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/QZDA82371994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23503b165db13248da68dbe767e5fb182a221d017a6d1ce300525780492eb53b. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZDA82371997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018fa2cab992e96e6cb4f43ba3d65ff440c27afa89dc9267d6abe295c8bc58b2. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZMEN2483800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70227a94f1936824800572852e242d75a38adc4c242bf4eb1dfdee97db17378. 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/QZWFM2329031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453a90f54eab6a8dd02d61456ead577adf150c8e445f1f42033868d2d1b27f1b. 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/QZTAS2370059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79308d4523f4390764d0aacf68aff0d680fabb2424d62d8daaf0118583596ce8. 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/QZTAS2370060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cbae0d20f16bf536c50c02134fb4473f88596bcf2002adc1837bacdadea9da. 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/QZNWY2377722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e526e1138b5b7c3f86baed83fbc85db1bfae0ae88cc8a7fb0441332e521082b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTAS2370061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a99e66feba9f26b82de67cdffa33267abbe7c339fbdcd728df898da40829f4. 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/QZMZ92226464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cbae0d20f16bf536c50c02134fb4473f88596bcf2002adc1837bacdadea9da. 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/QZNWY2377722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc134c49eb018eecba94e99eb5f2e535bb19cc23937b1a17070e588d46d5af179. 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/QZMEM2327364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdefdf58329d79da95a911b648231924b5203b17ccd4f156198076214c0d9e8c6. 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/QZHN32317863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2cef1cad6a85240152a8c343c7384f2e3a42a98bb98061b8258349fd66b932. 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/QZDA72337073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a99e66feba9f26b82de67cdffa33267abbe7c339fbdcd728df898da40829f4. 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/QZMZ92226464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a14a785c2292a58064deda6dbaef1ff5c8c800f770189317d619b547e0f204. 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/QZNJV2123216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50050a7fa271483f392148168c26610b99e31257ededbef5558de9d0d8029d76. 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/QZNJY2152031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6235631d7703b6c9a696f03d80b97c2cf3c9b142cad4f19c43b796021fc08103. 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/QZW9M2233848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8355d2ec66c88f5874a485a66538ff821a5f7bd1284f0fa3f047717a3f91d8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USJ3V1846358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89a734822f62eef2f590cafcaf93f11b5bccc1e7202b3b97dcbb369804c5c2b4. 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/USHM82335096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935a81069d55fb4da90ae8f524f1f82785ded6e8b7abab6093d6c4c100331470. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZ5AB2249940.