thumb|upright=0.9|Negroni in 2014 Daniele Negroni (born 31 July 1995) is a German-Italian singer and television personality, known for being the runner-up in season 9 of Deutschland sucht den Superst
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 0xd9033e2f61c1cc512e1b4ed55ac7bb13d96350ff10a0009be56f6b0b126c4437. 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/fb0252c3-c61f-4fe3-97f7-5637a33d3904.json and https://artists.proofprofile.net/proofs/artist/fb0252c3-c61f-4fe3-97f7-5637a33d3904.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 0x7e1859c62a329c4504bfb568b9cbf732fdea095b91d794858c80e5693f39aff7. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/DEUM71201538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8c8fbd13846c09a6a4ca8260807236f53c60d9430f21656e3cda108c88e1bd. 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/DEUM71201853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f0a322083c2c7b4a6b53cf00682afc1a530d40ab253841b1c81d0a36f438bd. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/DEUM71201852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb70248d2e73d8f31c7c3173332ca787fb3b0478a9344ff3c6aa96826698b85b3. Chain 2 (Bitcoin): anchored in block 957573 (2026-07-11T13:43:13Z), 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/DEUM71201859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e74792ccf2d02b3bdcedae212d242ec1f2f79432d51d14d0fb845c3eafa11b5. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/DEUM71201861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed5ce6b8e6d4f2698eb576a82fdf13e1dd56363957d31737913c160bd8b3304. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:10:05Z), 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/DEUM71301159.
Balloons Full of Water (feat. Patrick Miller) [Radio Edit]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14215b162d7667aabc0a0f0c1c0ad9a13bb47e8d5ecd9245d1cc1ec1be0d70d2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEEQ82300057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43b72993f17eabdb9852b272a83a630673b5c1f80f12f60579143084c8d6b666. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DEEQ82300085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d817d99572298a154e4f099a582ad21087920eb3e65776aaa97040431498ced. 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/ATD552307001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61e91cb0215706a9197f815c252b5c57ef428d74c421c5875049f806af5f5e21. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/ATD552412001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdaad54fa52a80caed4d0a2c53c0884d0ac4a4f62c834ff49aa0fcc91dfbd92b. 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/ATD552502001.