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 0x2914e2db461ee4cf643dfc3017adee413ea4fd6e6ae9edb513100d1c181b7c9c. 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/cac10ea0-fab7-4d8f-b9a5-f4ea2cd14b37.json and https://artists.proofprofile.net/proofs/artist/cac10ea0-fab7-4d8f-b9a5-f4ea2cd14b37.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 0x180567ee46418c9108ed4d3be9f70b7950f4e0a1b5bd9bb9e5e65a9d9e738a9e. 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/GXF9Q2579627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf110270400f8eb436ed2673af862b4dd7b80e59d4d0ceb6ab36d927744476f31. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T07:58:28Z), 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/GXF9Q2580487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16901e037a1d6f0939b3fcf70567107c5dca0b003209e46ce1097527b86b9ce1. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GXF9Q2581673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d80fa58ab58432de6986379a464658141bd0c0ffd86add013a2117f121caa0. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GXF9Q2581419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16d47046a578e474b0712df096905559c10e11a2693e9c8f1b12a5bf371e6bb0. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GXF9Q2581285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9807d45fad25e3a96e4e59459bd773fee124f1bbe602b5c6851b9a8a5e424d49. 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/GXF9Q2581573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9547a68787e1e6e4ef587bd1cfb1c430a02622075a57bb1c4c9e42b480a5eda4. 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/GXF9Q2581457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58e41f675f98ed19432ecc6bc32410e6ba7f110a3654523ac213182aea31b4b3. 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/GXF9Q2581318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f374d57fae9040236cac411ce0479981682bdea2743239626ed971a356d8129. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GXF9Q2581179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb82531422e123b19e9ce4a4b313d1621fedd356c3bc129fbc1fbc1ff37ea87e. 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/GXF9Q2581293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0b757a4c43a039a7216a1e01e53427802734c408841d17329e98a82273308d. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAJF2528495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00bd6bc7eb8258186467d8503a2463383543920f3f91d0efd67824b9d9b3f229. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAJF2537990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf1d749e84d03213e848a2f38746f2ef8c866974709965c02057ca65bd76059b. 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/TCAJF2538053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c88ce22c923efc7cf30b80eb2750d3f9a70f92a0cca0cde059a68f523a73dca. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCAJF2537856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71e09459fb659540cdf5e12b6ba9ad49fa625cb44b944388a8b4610123bf188. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/TCAJF2537777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b701f556492ba9af679daf94a25d772f0908a723ce1511708c2e84f9e618d2f. 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/TCAJF2538078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0e1fc1f27ef8ed9802fa7e88711572bbf80ecb0ee3c3caf9ab14c2c5003782. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJF2559715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6931c60546a27bca33baa2fd8aa2d0e4143162f1f667b18391cc7af78c0220e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:03:20Z), 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/TCAJF2537900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ef7970e24dfc33d5eecc7236cd22fe36cf76e66cf54b934aaeb0e9f788012c. 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/TCAJF2559671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd029968a505652b33347391b0f75c3246af4292e40ae67db0c00377f6ae1ce7. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAJF2559577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d6ec49d52df736d917f44cc3f801805370216c819d49573c61a221a16a9cab. 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/TCAJF2559501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9a9c028d57f0368792945a104e01ed525045bd2f323d5fd33298fd731871a1. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCAJG2559807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaecad4a2370756d3c580e9cea1ba7b99674f815c5e56b588035396f4b7e8ea17. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/TCAJF2559442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ddc0e51549ade860e938709fcd3275dc32f9ba47ce0ea53bbee622cfbf92f70. 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/TCAJF2560008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf830629d583153ac3316af28f862a8c6c199f453161ddb7e852389fa19f791a3. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAJF2560041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf54dca93ce87d628977d5157477a04903ea2b127b8a91b82ad8c8b6ef36eaf1f. 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/UKXN22500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655d1b64a1fd0c31d770a0cbc4536bc5bba92a4c198d2ceee24e79df4defd54f. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/UKXN22500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ddfaa1e0a5fb35b991be162bc96a2922fe8d45b8296afe57302b1685714609. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T08:28:00Z), 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/UKXN22500185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8acc61559734bc2602e776b6519729611ce29757ad97d6e364a79feb2e99b3. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/TCAJF2560085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5006f85e45812ae724b78b6b683e344c4acd268ec4ba02b6dea55d15b8a81447. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/UKXN22545222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aed41fe301263e8e4326d36cfa1ee2cbbe3b3c7082739b7a312c3e16544ba0b. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:24:45Z), 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/UKXN22545224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507c905391de7afccd2f90bb5cece829841883ecf597a2e270199735e219b5fa. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/GBMJG2503653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bb06bafc070741f9a3bb6094e3494732f0d15f6dcd4f983ba2e274cd92162b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBMJG2503654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x975eb841b45084e2a0d3b4561a96a4cca742276a18c0b43395c9e5ae8cccd1cb. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GBMJG2503655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d973fda11f35cfa91308203b9aa1f3adb0ee9e48cddae8b56ffa0a595cd2af. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/GBMJG2503656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92c0528c46ea255f0486b203793e918de206b1cc8e878243589c0c3370b39461. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:19Z), 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/GBMJG2503657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98dd0f5340e97904f86342ebbaf60b0f388ab1df6a0a51cfd44088f9d31a58b3. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/GBMJG2503658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a67ff43e5df5e595c182e63dcbf9db2be0a0b6049e81b548907a79ac57003be. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T08:00:38Z), 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/GBMJG2503659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890b9726ceb02eb276384d642a708ec995325026190d557db6b853ab77c82184. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/GBMJG2503660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd017cb9b09d999b3062155418f0d0f3668627fd1a3bcfb47de62d52ccb69a9d. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:55:10Z), 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/GBMJG2503652.