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 0x24e2c32b60ad2c771b8eec88a90c3aad1d34f994bc3ec2585cb70a31e7618e64. 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/e74de9ea-b5d0-47ef-b08d-20502e62268c.json and https://artists.proofprofile.net/proofs/artist/e74de9ea-b5d0-47ef-b08d-20502e62268c.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 0xe7a28abb03b1a00c444fdeea23496251ced2944e744778ed0912a24aa6bfdfca. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:46:27Z), 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/QZHN31948089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26041fd457d0d9f63da93b65be916889f290e49eaa94990647c0b3a779390827. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:54:29Z), 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/QZHN31948093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4651fa5fc781a2377d6ee6b4304979b53f5f271d705ea9ce88ee1d60557128a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZHN61951938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb1688e733de8da20e4f4a99e372483147593a32414ea339dbce0ace2259aa04. 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/QZES82096281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde28be6dccecc5773de20acc0be931814b576559db093faff62f3f595f1ff14e. 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/QZES82096283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc968795af8a3eec8ec7de0f29711cfbbde601edc262d665595beed4c910c14. 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/QZHN92005015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef00289bc300dfd6c5168b773acbd72258652592bbd1b68e660d90a31d57b471. 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/QZFZ22136235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a6bc79ae5bdb0e17d279014f36be7726da9ead88443caa4572f37a4b2c358b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZDA82177580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed0bbef0365e0495b77a3d259c9321bf159beb50c134f6b3ba04707d9644f6a. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:44:48Z), 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/QZHN72195586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909d185f9163eb1e8e52f7a821b1706041d311797e7baf7a1ecb785344da7823. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/QZFYX2245970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfb2412cee445a7c3cb3bb49e8b8e8c5f67f4d2a6687637d264b6463a61cd4f. 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/QZFZ32347764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264e18d8278d0803dfb7451349625003fa5fc9b4b8ee9ad2598f2b509faef8b0. 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/QZWFT2560445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c7600060a91e19f8e8e1b18f7180efe6e10f7272ce00d5528ce2b2116e920a. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZZEB2423885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc095d4b678a54be710d4da8eed4c8253dc05c9ec114395b484d49c04c1b341f0. 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/QZZEB2423948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf553cdc57ce8eece775d1c13c879ec3e8b54c489ae216c3c8501272f02924dcd. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZEB2423860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb010a705ad970f3e558913700595d8cb1008f0e118c1695f87f3db372c19dcab. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZZEB2425114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc472e61cbb5503c061c2ab47e6287c0adb663de720d6c6811ce0621e67f1c2a2. 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/QZWFF2395496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a874740e667fedcac4ae96cec17d5cc322f1d06e918038e3cdd7f5b18e32895. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZZEB2424643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb010a705ad970f3e558913700595d8cb1008f0e118c1695f87f3db372c19dcab. 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/QZZEB2425114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf158f3fded93f43040b6ad047963f66351c460cedb664569b79a7a28f9d19e42. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB62458579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc472e61cbb5503c061c2ab47e6287c0adb663de720d6c6811ce0621e67f1c2a2. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZWFF2395496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbdcc2ce29e28f22b677a287c8f338bd71bf99254a5381f95e90a1f031ae6ea. 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/BCMEF2100016.