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 0x514a88b4d1460aa986ee787c07dadca3f9f84b51913c12376f6cbe9b2ab546a7. 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/3df94c10-8ee0-45cb-b937-9ff123eb6c65.json and https://artists.proofprofile.net/proofs/artist/3df94c10-8ee0-45cb-b937-9ff123eb6c65.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 0x88f5037324769730a565ba5da7a6ed1e5c6e487a6731e63e6eade1987bde47cf. 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/QZPLS2368247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbeb6f0ebc24691cf15ad5a299597b37f4b8836a192921dfda04e71c11656000. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:28:51Z), 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/QZHNC2467115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27377fbdc933ef36110154e04be252ac048ae91f25550b04eb6643e4fb3bdbc4. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:52:50Z), 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/QZK6K2470512.
Wir sind in Lidl (Niemand hat hier zu sagen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841c1bd00b3edcef4403d2113762f6dc623e3e80f15383eb9cb6a6e978afbbd2. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:32:54Z), 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/QZNWR2462018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801d32e6c28fcb13f76784e34c8666ec681828ee531f29d2081199d91ffccc07. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZNWT2487916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f22f4051fc262518d01ce5120bdfbf44b265a1f1a5ea4a9ef863b4a2432e0d4. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZNWY2431954.
Die Karre muss tiefer, die Karre muss breiter
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4891a33b0f9fc74f73e6ad760fbd4b28627a769599670290fc91dbcd5997b8c3. 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/QZRP52492722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f5bac8555c19abea29ca74d93205c1d63f4e910126d24b1c205675237abd3dc. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:33:34Z), 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/QZTB52404415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a1914642ef14a13a80ac9ce905320c53929162aa6ed5c2992782662da1df7b. 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/QZTBB2469353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x688a0cd728ef7a2050742de9127f05d1853c2c68accebd8698dae2281f3cb4ff. 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/QZWFK2454805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3613e5b0565261d2789ae4fdb16bc30c168a18d82da1865c49b6711244dc9f65. 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/QZZ7P2456499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ff8af540c9ec52f990310cb6cffe9f12114974e521a7c473c26f38e08b7fd9. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZZ7X2417962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81219be516fc0eda77f223f9d515abdd984b21536e0ed8c0e98ab653492709ef. 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/QZES72594705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12e8ea49ad3ebb6c23690f1b113e4c0fbe4277f249f237458823de1df0deb7f9. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZHNB2510061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7f789b12abcc96c19543341b3bf26834b58b9535706927e70e9e05cebd7f9b. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAY2527073.