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 0x6793bc7581d79c9de24c9dfa1e4f90d12ba1e517d1eb79cc4ce1f1f71417d81e. 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/308fb2aa-eecd-41b4-88c7-0b1a9ebae157.json and https://artists.proofprofile.net/proofs/artist/308fb2aa-eecd-41b4-88c7-0b1a9ebae157.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 0x10f7b2c2126406051b5df3b7a1911cc45ef193b155f3530de604aa3288373474. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DEE531102549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751cff1d793ee9017a65021ef86097d5199ca912ae92f0b0fb0d456b6174226d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEE531102551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a9d735e137175a0c86330fede4d084bdc27918213d6020eb6ef63760fda69c. 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/DEE531102557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f54d3c2d45e609ae7a978561139f1959de5162ebf6ca663bf8f11417a8f3b1. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEE531102558.
Ich will Spass (ZDF Hitparade 05.07.1982) [VOD]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eabda8573515e69e6837793fb4a00992546a05327e1d7d3c2328861ca3324b1. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/DEE869700763.
Kleine Taschenlampe brenn' 2019 (feat. Stereoact)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eabda8573515e69e6837793fb4a00992546a05327e1d7d3c2328861ca3324b1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEE869700763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d8b30f0c17328fde1727155e0fbc3aa67a17a6e6d6ca4487c0185d88e07595. 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/DEE868500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c6d00f824b1431b86a9a328cd7477f8d9982d7ad5bf4a6a9c370b330d24ae0f. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/DEE861900148.
Das Leben liebt mich ...und ich liebe das Leben
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ac5f307401daaa52bab379d6b6b4657768b6844437ff699523578912f88f2d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEL712300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a0811b429d281ab13594c0c830ad1cb3f00cc577247022ac86f0dc209a9a61. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/DEVB62400500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e5c1de85f6035dcc4d399ab295eed5aace70c6eb7aea28cf965c8b9dc0e686. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/DEE868200035.
Vain kotka lentää aurinkoon - El Condor Pasa
20 Suosikkia / 70-luku / Iskelmä 2 / Apinamies
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbce1e0c05a20de9f9c345a23282f43e99d126a62e42ae782381d942ff7ef91a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/FIFMF7000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a32428b4b86f32166cbb9de70d8a325f141177bc533b2bdf57a3bd0695c002. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/FIFMF6900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff54ecfd2be0cbe06a0a3511d9c546a60a44b2b97869acee60d6da67a4bf3bf7. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/FIFMF7000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6838246bb738c3fc26c47ce12b4b0d351d49bdf3ffb5b9097ccd15ae10c2bf1. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/DEE868200069.