Yello is a Swiss electronic music band, which formed in Zürich in 1979. For most of the band's history, Yello has been a duo consisting of Dieter Meier and Boris Blank; founding member Carlos Perón le
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bd8ab532cb4e58c42ea1d737a6a389df75ad75a1da56d729466ee70e34c639. Chain 2 (Bitcoin): anchored in block 953638 (2026-06-14T13:10:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3906348f-0d10-4d23-9c24-8028c65de103.json and https://artists.proofprofile.net/proofs/artist/3906348f-0d10-4d23-9c24-8028c65de103.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3baf66d2f15c8c87d811e9839dcd967405ff95332f82265c3cac24d5572b5348. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USL4Q2152125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b805420f7f118045a81d00304dedbd5ae8fe4d0fc7b1b492e773cb1e0ddb04d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USL4Q2152126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e921c4c4a47dbc62e7283b04705c8dc2babbc130a8f11caf4a2a15a8d0012c2. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USL4Q2152127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98495913fa3cabdc09164094814e0e110b6f3d3b108b90855998584e512ff6d3. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USL4Q2152128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931115d1381367c7de237f79e7afacda307a8d6f5b9fda5c9b70368cc6618cd2. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/USL4Q2152129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83b3af1d0c07cf542115ad4a978d4324f3c6ee60c3fc6cd7f4ff108767538a2. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USL4Q2152130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddc962a9d1bffbfea1b2e556bb961437835a2ba7877309fcd937f6db297e9c39. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USL4Q2152131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc42856ba85d92fa9aa6ece22d9e5c4e1f4ee10a7ed4ebf3520f86a1c339df1. Chain 2 (Bitcoin): anchored in block 960125 (2026-07-29T15:38:18Z), 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/USX9P2045855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6020f6c43b21c899abd05419c538258d77a7bf8c479ada7fe53f372ac8b27f50. 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/SEYOK1812383.