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 0xed31de231bb11fda519c1fe3482463f826a2dbacb7261113e6501c2c230bbb8a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bd515fea-fc92-41da-a89d-5c4e53dc048d.json and https://artists.proofprofile.net/proofs/artist/bd515fea-fc92-41da-a89d-5c4e53dc048d.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 0x933248d147db03205fb46e5f4f651b020be75f25dcee635c45660a0e9efe3f00. 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/TCAJG2580244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffd7c5ead894a8a0dbc1c34ad5730e08a266714b3f80b4d7c346dcdde103c6f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:28:36Z), 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/TCAJG2580447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfcc499b9d78691bcec727c73c5814c7c8ffdb1831292c91dfaf086312721405. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJG2580206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d809d13e6988651ca77610b5a015be12c0921829d5e063920e17d51a7ddd1df. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCAJG2580377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8a6906e195b5697121e4899304c9c797a7fc00dbdf951a28ba4c5d6bfb7924c. 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/TCAJG2580227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b9c7154a1479283cb713fb6ba45132e7a67c06a1605368393244bc3ae019a9. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJG2580094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c9ce1fb31ee524ef67b40b6857b5897a62c557d71e1f5951a650625a57aa02. 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/TCAJG2580057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedae98397cfbfae011dbf38076969f4f73a21df448dd8d192470999aac1d564. 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/TCAJG2580137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa9e25987333695a944177f3fffc62eb246810741b2548223b157125a958e60b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:34Z), 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/TCAJG2580416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae6180ed65ceb50677855df0d4cb26ccfc334a9bb4fff44287ddf8a91d6c89c. 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/TCAJG2580262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc471f98acb8968e9d6a241a118e605190214fd61db25506066c565bba1ef4a30. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:25:18Z), 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/TCAJG2580511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06438476ba95754a2bf2ca405080c34fdb9caa91b1f143aa4104228a2c55d95c. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAJG2580494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215d89bfdaca15268e8e3d32fa442cf18750f0ed2b0f558a865a8d3108a30e5a. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/TCAJG2580284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cbd785e3b3821e2b60a2bd2cb7d5ba891092280e217f0988ba2cc61b5d438f. 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/TCAJG2580123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93563ce8960a35ce8a3f766ff00735ad6f4892d9a481227069f999701d8d781f. 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/TCAJG2580151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcf191f042fdf31ea2febbfb6d6f72b21cdb0e81791f08fd8aac64c6dbdc17d. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/TCAJG2580530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf743ddcb207ddeb341fca8aa9ebe76221b5a8164ed009b4e62adb40cae7b5139. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:12:01Z), 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/TCAJX2572529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a7fff6d3cadf9bc9c5232897830622237250e75e81dfe78ce2a4e1b2c48fc3. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCAJX2572252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdea66e2006f977695975011ab17b714e82d2a50893db9d7aff9261bfd141358d. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJX2572353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62e10d52cb02964e3dfcb6d609ce265e20e7be209d7ea2c904a649ef13e15fa. 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/TCAJX2572541.