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 0x73eb5d8e5ae5bf33d8e7a708e0a27fa02b2311cd3510026fb56cd5ad2d18a08f. 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/c11cf85f-5351-4739-8d70-2e7f4fe05785.json and https://artists.proofprofile.net/proofs/artist/c11cf85f-5351-4739-8d70-2e7f4fe05785.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 0xd1295b150eff3615d0a7472a4a9c7f4d79215c54c7be0f114296cd0d9aa0cede. 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/DEZC62434699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9064c61979b92afa72e32cb7dc4c59ed5fc7459ea5a4510872d63aba377a17fe. 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/DEZC62445660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa716dc37d84620725525eff6ca3b9477428e2dc473ce94e0008cdd51f21348fb. 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/DEZC62445661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1729bea1bd2653ff0b48bfaa71530a0a84eb5b0f03609eaae25afed81b66bbc6. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/DEZC62445662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e40218c24522ab9467d84bd17f764985e3c42d8031a4bf5e692a5b3317091c. 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/DEZC62408058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf654e75cd0c2b4ccfe56b4b2666e5d20244caf806b3d47e3256bc1ae553d04b8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/DEZC62138785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b49ce7e58d32d5e1e7996854a51e5a4b5f5f198b5313658254d1cb629f48be4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEZC62442271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08dd58d5eea4c027a6e73b49592bfc1b310877cee3bbacf597f39e1664ff1a58. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZC62445666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5e22121a9bb059a693f1c8dec66095d76698644934bfbfeb74d0d44233191e. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:04:41Z), 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/DEZC62445668.
Paare die nie streiten (Nico K.I.Z Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe21dba2cdd9a6ef47a927ecb8ab02e72841d761caa709331ae23d9d9c05e81. 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/DEZC62591794.
Paare die nie streiten - Nico K.I.Z Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72b05e9e8312d26327c8a9afe173e45084fedf66ac1b0ea5095baa96bf28c41. 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/DEZC62584335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe21dba2cdd9a6ef47a927ecb8ab02e72841d761caa709331ae23d9d9c05e81. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEZC62591794.
Die Flamme - Jan Driver Alternative Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457cc81d29b4b736c4faa281d9b4abb87acadc34217e058d77e3e100b7900fbc. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:58:05Z), 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/DEZC62595116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc5084a641554d85f8897e995ea08e06d1cd3cfed6a8006eb1fac5bf25973ee. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEZC62595117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f2fe6f4f11b2196022367166f5221b64d5fac1583319bed073c670ca871efa. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DEGQ12100072.
Freibad (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147e66a4a45ccd0928a57a4b053a237d3f08441f24bdb2073475022855634831. 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/DEBS92200280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e11cf9ee4edd29539f480add49c5079045b6db984482ea23f0bbcc2d621007. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/DEXO42431917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x073d600a0883adfb3c4914f30afb154e695139fdb762019f2b5cdde0ee36e602. 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/DEXO42432115.