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 0x370b63ec800e3cae6286980e0acb8277a66ed3a65d8513bfb08a56afc114513a. 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/e526ce89-263e-4435-a863-9fb69c23ac8e.json and https://artists.proofprofile.net/proofs/artist/e526ce89-263e-4435-a863-9fb69c23ac8e.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 0x6a8e171a0b462fb2b04e29d9b9c65bd79a2d725a2d55f3c35d1ebf90bcfa761f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DECU20701401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd3b446cf4138dd3c3244ce26f1e4e35b4303e88fc1b1f1a96c033aa2cafde7. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DECU20701403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b6d9f1bc7eac386dd35c40bca0cbfdefbb694143383b67c67ef0e0cf15e4ca. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DECU20701404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1f436c7f2a5eee64b3da67f2f06ac6291da86df993c24df5fb380de8db6bd04. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/DECU20701407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b285b91b9eeb61718df918cd9786aac56ef940640e72bd22179cd0b67e87ef. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DECU20701410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb449772ffe8f077796c939bb1d742599e76f61cbea90e7c33978b543f81e669. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DECU20701402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe196d5fda785b7ad18d6d2963349c350f8231125c4b2a093e0efc7c8531056f6. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DECU20701405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbbe2162427591d6916f8063dc27b574bc3f9011db752beb8d91a9e2a52fa5d6. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DECU20701408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17265bdeb06ca4303471cc877a56f81335d723f16c8ead8b52cc6b9f038f14ec. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DECU20701409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc62fbe151d42eea914b4e08d77713501a9f8d8f2f3c43bdcafd2e6280b98a69. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FR7LO2200618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x868fbecdd78eea6df1810f862cb94b8295aa7e5f3bf35a0e550c4bfd901e5c70. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR7LO2200621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6f65d2885f65fe95a755851073ddaa0825f6f4a455a25e26ecd742d8e77253. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/FR7LO2200623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da9f7f4f50777b2254b48b0cb2a4b19997a14b82a21c477fc7d65d93213a95b. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR7LO2000395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a875591427d96243a74df86b428374b0496f0870f0be74e35d0b519cbf0b8dd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR7LO2000401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8e1df4510be3eb7528bc039df7621380dc59f4772d41dc1c230ec769c27962. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:06:39Z), 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/FR7LO2000398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c8f836306b95f7d2b136715f187f827671196b08508fb4ed18f5d9167312f3a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FR7LO2000396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38a8c30f51c77c1a0311c4569447e2968633a77f185dd33b6dc63f816daf15e. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/FR7LO2000397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e58e4e3a237d67f4b1a7c788e9f120df7a9904bb830e287101c6eba2e409ff1. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/FR7LO2000399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92dc4fd488a90dbeb62c1fe4421601753d0a518cc2c59ef3361fac61ca221161. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/FR7LO2000400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed1a7ef653c0a348a593175ba8daf687c4b568e60cb4a168e5d49f2656ca10b. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/FR7LO2000402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17131e0688e741c2c722f853b4daf7848d9f5625447c32b6322df726d8e93219. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR7LO2000404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12be96ca1b6b1d55e26a37b413f1800dde44e7b6cdba97768b760d77dcde8cb9. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/FR7LO2000405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cdd5e6f8de07d9589fb7104caed7050c742482e0275ccf8354f5022b729948a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRPFG1700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38543a4f48a97bc7bd990e3f402a99c35ef7670ac424e8212f1468d12949dd2e. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRPFG1700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70fc680df4e1f049d924cc167642473498bf8c3396a98d43f65b301795e10a6. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FRPFG1700080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2c6dcd6b50c93e7f59faa92400052a6052df6febbcf3e8824931a73a50004a. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRR001400080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88cf3b29c4ec963e3c4cb00a6bade7238539553c5884409e57606f4f89a39b0f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRR001400082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x718467b1dca088628aec9288de54bc40420c93271b6ba8e87b944cf8a344ebc5. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/FRR001400078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe92651ed83572719a143a1da619eda79e250432607d49839d0a137241943de1. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/FRR001400081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d6e592e8b2dfe097d8e5e6a2e02778c86abb1369fa9adec8887efed2904ef0. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/FRR001100041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f540374aaef40637d351b092dead31d8a631431750d59a5f9cb00afbd91fdf. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FRR001100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f58bdf6abc637fa22ae22da73516588bde60fd827516a89367d5a8579db8386. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:44:32Z), 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/FRR001100043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d0ed367d276d73333be0ffe14998e4cf26b566903b65871983ee0db256bbba3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/FRR001100046.