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 0x45bd59c4affec0b84b10489c39681f7d613edda58381669d81b6e0cdbbcb8bfb. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f21823ae-16cd-4e6e-ba14-8a69eb518cf5.json and https://artists.proofprofile.net/proofs/artist/f21823ae-16cd-4e6e-ba14-8a69eb518cf5.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 0x3f907dcdf9e5e3e1606b8161475e530eee62383b9c9cbe59ab469a0a37a0f6e3. 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/ATT802401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f907dcdf9e5e3e1606b8161475e530eee62383b9c9cbe59ab469a0a37a0f6e3. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T08:52:30Z), 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/ATT802401001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe02a7175eae9294b9f5049da01d417925fd1ac7ad4218de19d9e0b2758581d6. 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/ATT802401009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb2658daba5541f5534f9003f607a7c9afce4926aca4e0fe56b53306df4ab17. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:59:15Z), 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/ATT802426001.
NEUE FARBEN FÜR ALTE LIEDER (Acoustic Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ec6e352c679254283d64b96d56a928c194a0cfea8c77634ffb34c05a285a50. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:50:17Z), 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/ATT802509001.