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 0xc8140ff5d102069dc8d9cc36266c8fd49bbdc7d84af8d090f1ef1bd9fe459dd3. 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/0e299eab-4a16-44cb-8f2f-a35beca0f4d5.json and https://artists.proofprofile.net/proofs/artist/0e299eab-4a16-44cb-8f2f-a35beca0f4d5.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 0x62abb6036395400d8d477cdfeffa46d1b40a905217d2871a243bead92a15b141. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZMEQ2505615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40202c3a3ea0ae998b05f4507ff44d3bc346821115e664faf6ee2086dd7e583c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZMEN2581246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c3d8b16612e0c8cecd58607161f4393e3094f62f2ac85608e25da6149229d2. 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/QZNWQ2547684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b6bf7016e41793869afc67af2be650268dd5475d4672756672b40b687a73f6. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZNWU2512114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557f8c2b07ee53afd040f44c3b6b519265e8e7bce5822ef7e71762fc362948df. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZNWU2512117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19cd5bcc8d55430dfa5c0eb121087153a437111cb9bae80e28608cc54a808b9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZNWU2512118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639d4043216c16c31a27d8cfce43627d7244d052da6d7b6d8f1f77fe710ac8f4. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZNWU2512119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c63e8f54f649457c431951194723185eb138df406c543bf6686e5ae53fcef2c. 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/QZNWU2512120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed58e62236fc999396835437dfb652223d1df879fa311a0822df9b89f2464287. 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/QZNWU2512121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f92f086e9bcb47389c277a346e5dcee89388eadf9bcb2320f6205b649bad344. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZNWU2512122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf892cacf4f801b817589157ab69eaf9d28970aa889e8ebf2aefbf136f24a56fb. 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/QZNWU2512123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64b3772065532b70500852528237d1528f76ad228b887c9cea0e261db718c2a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWU2552056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fa49f750fd5128712847785a1662c826816671ca66bc95369e340835645701. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNWU2552057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeeb51d840a6c6e877c931b3735b68425f6ca2ea0df3e6c99bd81c0af2b55a8b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/QZNWU2552059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd440491f34ff00b0e5f98088efb5852e6d2622b0e1b1d720b919886bb9eb9051. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/QZNWU2552060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xded29fef70aa6c65d02969f25fcd6e1ee551f4ae5cd113b9400f15c307cdcdf0. 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/QZNWU2552061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225f50e8e7bc8a2c485077502e61dfbd7353b928847da147cf3acf234dc515b9. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZNWU2552062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33af33461469ae12f0e3ffddaeb4df7f6da2ded29760d6893e6a987758b7f16. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/QZNWU2552063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95dfc4fa0a11e26f8f4432e54caa73a746c653af9415f39286971b9660f691a5. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZNWU2552064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e39dc87c7a9dabc32d54284be39cf1b361fa1ec5eeb2145c8a976738d06a29. 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/QZNWU2552065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0cd203b51f17d6e7d7a88f0829488a0dec252ee02e6225556bd0fceeedd301. 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/QZNWU2552066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1d61342c0b5809b5c3fe35800f19c4bf9f47cbe2a7905cf915f4a7e020599b. 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/QZNWU2552067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6cdd37c0bad4d7e2a27235a260bf3d967c1429389ef17e89deeecaea4500a8. 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/QZNWU2552068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa6225b25ae01d52cb5adaa0b723c3ec73f035c27028eb51e8c52a17d224c835. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/QZNWU2552069.