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 0x3132296608d524ab79f701b0f026ada97d59562e11aeb4d92893984d2f7cc8ab. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/46bb8d46-edff-4008-b962-029758bc5976.json and https://artists.proofprofile.net/proofs/artist/46bb8d46-edff-4008-b962-029758bc5976.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 0x6c6fa3ed5f67c3d96d5a7ed120257d7af9143e876e706d82335681c4e8fdc1c6. 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/AEA2L2497079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5609d4d0ec341916dde354c7ad170cfb445d4b043ab107cf2c98443cede665db. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/AEA2L2497081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57c63e7098b11c54bd79decfc4153c0c09d217b7e13a088a75d7ae337d18eef9. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/AEA2L2497082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9d74d1079914f63c7100c5bdb7e3f99024ef28909106d6f497357fb162dc955. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AEA2L2497083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd66a8631992ff8ffb0e0bfd17143b0b88e8d2ecc3c40e1e8c5daa8591665e982. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AEA2L2497084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae90038677e020d18ed184e6396711e9017c550d27e9ca2e2de2004d1cd2414. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:51:41Z), 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/AEA2L2497085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5775d6e81fbbd4be4ac8ecd0d31f5d4fa11b738134af9d3411c7f66f36ab15. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/AEA2L2497087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f5cfd17c4ee64e916b370252442a8d61275c78258cc5c8782ce82f2bce8490. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/AEA2L2497088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74151646249e5643a1c55181949ed6b731a3b02422885b18431e8c60bbb893fb. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:19:24Z), 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/AEA0Q2434609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0a086542cae5ac221c4617929765421228565cd24f36d0a66ffa683f04958c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:08:24Z), 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/AEA0Q2434610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fa0627a062ac226bc42249094e10fa56d7c09ce4fee25b05987c9a22a5b0843. 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/AEA0Q2434611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f51cceaf8ede2ac6a55171a4ccedc4f3a496d15950a80fae5411863f6c09c27. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/AEA0Q2434612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f7eeeb034f13f26564a0cef0855c303cfd4dcd1924c4b94bd154f119136208. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:27:29Z), 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/AEA0Q2434613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0fc4fe2f68b58985ab9f140bc512005a2959f53700d15dce713875e1497368. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/AEA0Q2434614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fd2c1c4400e3760a3b108d248fc1d75d05f291a974cf790dd13bc09af8de29. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:31Z), 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/AEA0Q2434616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb07eea37771a8d26a288893578375d6622b2d439b27385e208f95540efe979b9. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/AEA0Q2434618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f90437a0bb7d870295365f514feb20df587e571bcf8a9dc726f166ddff0964. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:05:57Z), 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/AEA0Q2430544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392e7c041e0c414971e60e80601571974e661cadb8582ea4b7c69aa0bb03fa56. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/AEA0Q2430545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d63428511a09fc54b948f4f4e5bae467ec5f006ee04b32ad61f4f3c366f1d91. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:01:55Z), 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/AEA0Q2430546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda4a9809d2e5071a1f6c4d6f05dd01295f8640987dd51b9681491b47d354a286. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/AEA0Q2430547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab2decddaa0faf38e14585b5232d4e9352717b4831498691d0ea6bd1faf00ab2. 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/AEA0Q2430548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6792d9871e51c56e7a5093b2b3c42660328a87382bdeb7c6b18ffb56665bbae3. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AEA0Q2430549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74416477dabb59c1c7a0569867b8b7f93932cb97bb224bf9aee946534f666ada. 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/AEA0Q2430551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c3bab33ecfbda7b5deed2becd9e6c560b760b9940827fc20f52ac94ae13c0c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AEA0Q2430552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71853c2a5a907894c7a8fe3fa2d406c9c87c10acd9a445b90705d3cc3acd5f28. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:36:54Z), 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/AEA0Q2430553.