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 0xe01e56e3c8f6ef079c0225f48e2e947a13e332e750da76cdb22aa53a1cb3378b. 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/bbd515d9-7f84-4ccd-b03a-a8d6dd216fcd.json and https://artists.proofprofile.net/proofs/artist/bbd515d9-7f84-4ccd-b03a-a8d6dd216fcd.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 0xea895688cdd75c9436cf70a297a5f95967cbd6acbb7dd75e8dfe5d4dac187307. 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/UKFGV2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627f84d1c7952ca66bf6a5fe5ef3ef4a249cb8cf8d3b651c0708bc8ffd0a7a9e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBMA22313158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb234d929666bcb81e9b2364eece053a60fc1d1b379a2044bc6ab9cc55273b36. 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/GBMA22320574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a13211b924a2ff868f4d9517d840e7ec65bdcecad0073377ce8bc9fb06e71f8. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/UKFGV2200390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb73e5ea1fa2fd7eb71ea989816a71b5fc3a9047cdfb999c6ac6626f33883fad2. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/GBMA22320575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022c087e566ba9bda224800db64a796cd6cbb5895b27b23f289ca77749179c0a. 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/GBMA22320577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6ab98229855162da3e76614d16f3ab4ad777f06783bca712a293dea9ac80e1. 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/GBMA22320578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525641fd780ad6b2f302277e037808839ce1d105a1028490bc0976ddc03de869. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:11:25Z), 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/GBMA22320579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc61f72aacbc178a2a98fe89645503b457ee598a68e19ef0d5c426d1a4207b6b. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/UKFGV2200389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b0f5319bc6e6b550a5c5b9f182e3ac2e30b31e9bf040b53a13f63cda9f8bfa6. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/GBMA22320580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x517a34e07a826b6673ca1e37c9e0a6592b2fb4db4edde9428a7495558090990e. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:25:40Z), 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/GBMA22320581.
What You've Got To Lose To Win It All (Deluxe Edition)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3f9bb533781d3bd5c88c722afddb76698738dddfdc27f589a7baaa728b795b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/UKFGV2200391.
The Howlers (Live at Metropolis Studios)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9ff21f74b33d24185b0b9a92393141f5e380296845ebfcd5df42465eafeeea8. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T16:05:09Z), 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/UKFGV2400170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a01fc611d2f0e2cf94bfaf9c75c5f1a6f79df64dad614dd8bdf62a47ca7086. 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/UKFGV2400171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ad9a16012996381cbf0594709a7b5f00b325e220cee1341a4d9d9dd8906e6c6. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/UKFGV2500233.