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 0x1d196cb287b0cfdf4ab79264ef3ec970e0ca0b91291b4b61dd178a9c2c0ddcd6. 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/f8698d17-3a96-43f7-85c7-630b5fc1196d.json and https://artists.proofprofile.net/proofs/artist/f8698d17-3a96-43f7-85c7-630b5fc1196d.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 0x8e13565a4644b4832281671f080f2430fd3ce304bf93642e30c76e6502d43e44. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:05:46Z), 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/GBKQU1867743.
Creatures of Dark Techno, Vol. 2 (DJ Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe80b3d9c42d8fc8e98bb25ac13fdf4ff17c47a7779981a45a3fc3bbd92d2f1. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBLV61920073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9713253f509798f11ae8f08e42136cbfd638661a5364242a673944dd62967efe. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/GBKQU2259487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c683f2ce669834a5d3a955b44a5c0679290c55d89050b5b2ca59ad0c6dbd70. 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/GBKQU2355142.
Now We Are Free (Original Gladiator Mix)
Vengeance, Anger (Tarantino Is Your Father Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f28cd1d49e15ce6ff57458a59500307d6ee2a47dd351595a3f8dcf1a8badf9d. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU2480813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9e55ab06e553781cb9b205c69a4f0958c0b1e06661d29ef97f772840fc2edc. 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/GBKQU2495946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a72b53b4f04cb7c949c3e99a8796bbc7fc6c59853ea1862e665ebc6d0032123. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GBKQU2509999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d87ff2aed99f90e78f15a9b1f3ca2717ddf17139af48c963295655f9ea8746. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GBKQU2526847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b42805e1fe2e6695d32f7f4cd7ab4841fc17389ad85f422225af6691024cd8c. 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/GBKQU2529171.
Schranz Projekt 1.0 (In Der Nacht) - Radio Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a0c22e6dd6a3480c8df2556c0acf7a3aca798523ade1db0a38e408f63afe45. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:26Z), 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/GBKQU2542092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0829db938e9d71829edf277ecce334df991f5506c23366535b078c872bbd6a75. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:02:19Z), 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/GBKQU2583847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216450860badd4f636de537e3146603ac74b846ebac1246c0d45004f225eb916. 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/GBKQU2584989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3051696a45ea796ddb760916367a7dd463dbd65c4a3a3e30183e5797cef955. 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/DEA312300095.