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 0xb6697ef28023fb648bf4829e1f6b658104a4b3193a42cea20d3fba06e3b818c3. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/dfd2e4d9-cbe3-4f16-8520-176fbf3756a6.json and https://artists.proofprofile.net/proofs/artist/dfd2e4d9-cbe3-4f16-8520-176fbf3756a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ne Zukunft, die was kann (Der Klima Song)
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 0xbe52605dbc80184800e87ad8356c10daef0c6ad72b365b6d38b8060411cbcb7c. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:44:08Z), 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/FR2X42278997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0323ec9812ff51062359a2919fa696a9311dceeee0923342ee1cd7ce10b8c03a. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:10:36Z), 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/QMBZ92368082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab29d5f4de370c8941ed4780160a165440d23d720d0e606cd5a1cba8d073f3ee. 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/QM6MZ2439167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18a371a97e9468181aa85716fd43faf8717f0603742738685f477c5245c67d02. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:21:08Z), 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/QM6MZ2439224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e14b70619fd859279303582386459c8e6e9a31a6e52453860caa6e5be8be97f. 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/QM6N22437781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e7ab4d67efa0d3329c00add344f8197022547d59a0a792fd11642d80f72a6d. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-22T00:56:07Z), 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/QM6MZ2439079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fbc120a9ab2851372411b44895d0f1db1df6969ff365077eb0ab21eb971baed. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/QM6N22479130.
Lila Luftikus zum Mitsingen (Instrumentals)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573698368c37cdd0f60fd911b0d8150b5e29ccd4b6432e8cdff9f2edf0b116c4. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:30:28Z), 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/FRX762597481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab29d5f4de370c8941ed4780160a165440d23d720d0e606cd5a1cba8d073f3ee. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM6MZ2439167.