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 0xa2f2466f1e779af18d0f5e6156083e4c98a6b926d317f250159f4704ad451ddc. 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/329c1f05-de17-4aa1-8266-cb53a754fd00.json and https://artists.proofprofile.net/proofs/artist/329c1f05-de17-4aa1-8266-cb53a754fd00.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 0xf7cc09f09854a284a6f4fa70c651fd32c4d0bac2389320ef1a03552356386e47. 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/CA5KR1832763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170c064e8bc937bc6d375a167ac64068c85aa93b53a7d3f2cf94fa7d1a0e983b. 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/CA5KR1832770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x984e13c9c6f5618278cecb1eabba566c8127af770da8e19b682848df158b1ccb. 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/CA5KR1832735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36ad50e8802e556b960689434f484af4a0356214b3d9376680984558fdb9889b. 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/CA5KR1832739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41f380d8fc889401b1c5b5e7c38f5814d4cb46d3d513c5ec7d97444ca368cff. 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/CA5KR1832740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4072760a906aeba4231dafa0c5c820b7c0a5c18c77f489e1bd9798e43f2d7f11. 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/CA5KR1832693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8a305577bd005e04c69a3238b2d02f79466d764d8f494bc61385e006433f5e. 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/CA5KR1832695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33e6644e7402f19653725d24e5d3b7d149af196c8137d658dd8b1b6e97af897. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CA5KR1832699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc01e6e6ad8682949123509b7a5dadb3c90a96b57e7067e3ae6547ef2f29c61. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/CA5KR1832702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16745b3420c6c5a0d3f71a9ba417a4e81616e3f8b936df0b61e8039f9c5135d. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:04:59Z), 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/CA5KR1832719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c44cea5fc301fd136d1b232739d13011aa40d6198dd7dc9aa9e1b4c1ad51946. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:30:17Z), 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/CA5KR1832721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79095d79b984ca5a80e0519c86ffca5a2e65ae3d162ba8442cfe4ab40da1635d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CA5KR1832722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d218a037d7ac937adbd8ac7d80aefb0fd8ba940f2f51a58846a4e1e2af5b169. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:37:30Z), 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/CA5KR1832723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dd6c9b82669f3a06b46815d004b962e61d471892176cc21bc31d5256b682bbc. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/CA5KR1832726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59991827cd64c94136086304f5aec27e5ad37617416fc4a46f8f41ba64892c2c. 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/CA5KR1832728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52aec9a8b08e5ffde660de6f9a7a1588ba58f5f2db8b96443dc0eb8eee2adb9e. 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/CA5KR1832729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa105b587fbbdf8d1156135f84933629a1fbd98ddbc3f2ba85ec54967ab5a2aca. 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/CA5KR1832827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90c01b14f71483c54d6b51ce3647e24d64de9198ad8ab8d4f4aaad7e0ec05d2. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CA5KR1832830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85edbaa84e5b6e9f22f2a4984cfc2dacd32107b70885339efd089d1da89e542. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/CA5KR1832835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf745431c3c6c29ee8a56a3d55eef7636bdd4cd0ded3035fdb31a2e086e0ea1c4. 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/US3DF1999243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5031f08e86b36210288a62c7b4f30774e171a40a6ea8a3a3ce58b3be5715e0f7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/US3DF1999246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc9c6cd8f0e9c5acdc3ac269ac3c8c0a5c69e43a5371f86c35004cb1e4aac363. 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/US3DF1999251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0114d037dc9483a84f33fd97cb1fe56350a8adb5c7d43eee96d5fe68cee7d4a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US3DF1999252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7264ad0aa34f76ad28fdc4338608755108c43958686a97c41e7e650f2c2a2a0. 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/US3DF1999253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be2c8b65fc6cbc900af5bdec990eb3efab9a608553242d06d0bdc01c634ab13. 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/US3DF1999255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27b6eb8f48abe6dd50e5c9c3fc421c292c518be1bdaebdb46547de8020df5a4e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CA5KR2060428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x450023f5ed1ba7752024c4ad4e0e6969830715992d869fc9a98a7f3908be0fad. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/CA5KR2060432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9388e4eb3eea8b62b1f59205f8c74daf1472ea74527012fa8bf2dd8bacad544. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CA5KR2060434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f89d204d382e223a4b305dfdb475635cebf76d3c29d4df19733e83b0559bfa2. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/CA5KR2124788.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd7a1fe9a5e2b5c73518f18151d8080fab1db13190b277d518ecb099fd4c531. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CA5KR0015561.