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 0x0cc7e186dbc77715202a64caac9da815a03c5e8514e8cf7a43bcf9e3e50ccd17. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b2b7b96c-06bf-46fd-8d82-a92991199c06.json and https://artists.proofprofile.net/proofs/artist/b2b7b96c-06bf-46fd-8d82-a92991199c06.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 0x709f4787447770cb7cf4141d0f364915b485ddf5df6ff87baa29a1dca8fd7c26. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBSMU6065490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74d7c5b5a9df10e001fb90cfd82b587109367308b596f8eb7d02a2b9c228c08. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/GBSMU7239121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90c13e43fd68b6e02978956beabba26c929e5686afba9f5895439c8c126db8d. 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/GBSMU7229492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb685daca7209800552fc2da3a7835b0b67360498af88eabfdfbc08d243a3d136. 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/GBSMU7813530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb140e298a1874b29894b415e1b6291b6944d71790969db77e3f4b613a3a2a1a. 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/GBSMU8238760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x532970aecb4027e9dad6ae509a894de987daa984789ee5a828255743f8b6df0c. Chain 2 (Bitcoin): anchored in block 959018 (2026-07-21T16:57:41Z), 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/GBSMU8267854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d28f3ad6066483261f1013fdabb3f880a0b7a5f3996dc4a3a566f7379047382. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBSMU8396791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x644fe6f6b2db41d5a6986c0338e46b647f2a8f5a2e514c3e6a49a84208efbe5d. 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/GBSMU8546219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8629483b2fca598e50add5665b5acf04fe8b4e6b8ea76055be5dcba69bbf84e9. 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/GBSMU8874714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12285ca06b9b261231652ae893c80737493c78731a43cbf96e240cb3a447da3f. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBSMU8910363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e9a0bade28b66631fd64a610ad90cc3427dc11d232d2ca17a6477a2cf871f1e. Chain 2 (Bitcoin): anchored in block 957674 (2026-07-12T07:50:41Z), 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/GBSMU9239561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0346e8445f0c4ecbe25d75d1ac7d98f43109959f3f896ab50ad19d4768eb8b39. Chain 2 (Bitcoin): anchored in block 957676 (2026-07-12T08:20:25Z), 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/GX38U2192921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2155c7c397beebeae76fb550fd1a0b05cbd7a9a90c4165dfe9c332fa2c79e2a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBSMU0003904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dcde7f1b0c116de8e6ac16aeaa427ef7efcd638f3b7a9d376fdb6ddcbccaceb. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T02:21:18Z), 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/GBSMU0077324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bc5a878296f29dea925b2a2a5c1a659c9e65b4eb3144764bb4bb68551fe820. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GX5MX2122757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9960f6d69ebd4e7844cf9c5084fc6a3aaf83a5006fa7fb29d767ba2ab6f5b2ea. 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/GX5MX2149048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x872393ed616a44e06e859fa9d9dea4b016dfbffcc5b33e16fccab55e725d92f3. 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/GX5MY2187863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329301be9121193da8e1a40c6b82e5772f0aa34e38d4c0295b2874710b0b5b28. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/GX3HH2258109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaea494bddf1b04dc9aa37cc952f2a25ef79ff584adc220298b25f8c3da4efb6. 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/GX3HH2279188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57509a24e7a1615abab4f558cd72e9a6473353c6c17f6885449f21448161fda1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/GX4R52251386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35869746a170a4f7ae04f16cf0a7a8203e521678e01c8c0eecdc05b367ef3ef6. 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/GX5MX2206624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb1ceabdc19a5a962729dd77fa08ac0d13afc23bfed9fc9d38590d8e69d407b. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/GBSMU0120785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e003034ef4087e328c7774d230df2383c2e6f08c37b067cecb187cc0ac6429b. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/GX4R52317088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8068b753a4f91a663069c307ca0f4f26fcdc63b4464e3154f6ca8d371fe08f73. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/GX5MX2397470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d1293b061988cf72e5a0753e56bd93099ef8b21bc5f088536d6404eaf86c93d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:21:25Z), 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/GX8LE2450599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9123072970bc84f7406fa33570353c28f9b941ff18856d1137a7f2c3f6d6ab8f. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GX38U2417840.