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 0x2d151d7a7436b9b5cd6a48f7b21f35cac691777db7ab6429e8d95b30ac78596f. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/80d8cbc9-7402-48b8-8fc7-75b1b84465b5.json and https://artists.proofprofile.net/proofs/artist/80d8cbc9-7402-48b8-8fc7-75b1b84465b5.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 0x2faf34b2a2acc112f23951d7da1d056a4a74a6aebb0c0f80674494ce199a83cb. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/TCAHI2367046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7afcacdbf05456612aaa343d7d3714072dd8d81b729c35c1e9e01ce102851a6a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAHI2367058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ffc99d46efd223ebdcf803ebb92f12be9d4a7de229b2f06e77d3b47d4ef086. 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/TCAHI2367059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e4e2fd394f4226c29baca6a863d5ee1a2024c97a5136e01d2b086340a6175d0. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/TCAHI2367064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee598b6e1a219c222e0ee10be18686ffcdff324704b76bdaad0be289afad7a9. 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/TCAHI2367073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e06e27768facf5edd64d66e97e4cf2d4d026bcc29474f323c07d382ccb2113. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/TCAHI2367084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44df302dd23ca22a83d9f4f14c7e89d5450e84dc3ef439f961c75ad9eb86a55b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:38:55Z), 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/TCAHI2367107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e562b71fbbb5cd40c15a4c9fc399e11851c1380539aa291bb80d69e96b1b5d8. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAHI2367110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd082ade19f7b2720bf76c383cd5ecdbcb61642dc9399c4db3ce3b63f7c8a14b7. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHI2367118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0755d31c110268567bd7480c20c71d5cf7204b336330c057618ee93571c27d75. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/TCAHI2367122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbca093f6f72feefba70eaedc60f3b2b6022b7997d96645567b18156cba8e3b0. 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/TCAHI2367133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643f26e6898a5ec07cc58a0086975f8cae742db2633245bfb16eb48ffe6e27d2. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAHO2370505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a76e8cfc887b1853e2e2c0bac47428708ac0b8db43b091aae7a7815d0fe350. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/TCAHO2370516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf325e19bc0618463f3a8bed2f7199aace6cb5399f1549346c6369e511156c1. 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/TCAHO2370518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8dedfd7d922152ce9aeafbec60b5fdf93af767b371115924dc58927750fe20. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAHO2370527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb4cffc6b93fac4bb8bd04bb9e4e14d9d8da316dc86e62dfd3b3ca4ed8aa51b. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/TCAHO2370532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51ed9cf34b94015bb3ba08ea53fc462a60f49bec477a0d6f3bf224f22d277c0. 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/TCAHO2370534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa35228d52dfef2c39211c8fa1af0e1eee3176d8a74c10d932a053a7195d5e61d. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAHO2370535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd022e81880e0c963d09b8c9f420066c3526dd38bb4bcd9e2c97e53aa4cc7f22a. 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/TCAHO2370540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164709f1752fa6d2bd7a3087314bfd6e9d6ae2870fe62123046d8994f8b4d91e. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/TCAHO2370547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb7683c2bcbd5bcb33f225ff0b9f6aca7217fd2113fbdfeb74054107575a1fc. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/TCAHO2370562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54004e2f9b8dbc948904de6b1775bfef2cff14bc14c52ad18ee4bcf9ebd67204. 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/TCAHO2370565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d03a50c4957517a7916cbdec9bb6eb3fbf2b38f84db9e8c19e6c8b9317cf746. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHU2460145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46f285727687b69db61ad96eaa181ac9ad6a44dc6adefce102019d3ebafbb731. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAHU2460149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x890853d9094556af75c4407c7feb00fa889f0562143a663eb5c0a633057e390c. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/TCAHU2460154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8127ea78cc05d46efe11ff495db2509813fc6b66bf9d600c5a4b1d9bf0e873b. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/TCAHU2460159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90c991f79a506e52f62e5bba5abd5d18367dc65128690d3346cb9b2af0374bb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/TCAHU2460168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x675969397365de197e650942468a876daa8b59a71daa722497a2c80b222bba30. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAHU2460177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abb4238337d99fd9324345739026cc4158b642b67dfb5f984e502e6d0a5804c. 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/TCAHU2460185.