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 0x56e1ce664304f81a84648f31c9ca0628eaa1e9131cafff51db3109e5fba1d373. 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/2c7be46a-76e1-4a56-bb6e-b2062f9df681.json and https://artists.proofprofile.net/proofs/artist/2c7be46a-76e1-4a56-bb6e-b2062f9df681.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 0x87b7e4dd6836a76a4a528dcc52bf6988334bda6a1943521cb5b08bd8338010ca. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/DECQ31000086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018d74d5503990384d5ca8706c38d4209c35017f4071d0458b38f0848f75b4a1. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DECQ31000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423c006d41acdb320043779a72e9ee3e0274922b81a2b34278ffd20dc87b7d6e. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ATN261139603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0981c8291ec73cdbce54d0b992365304c1238523e6df9c597f20c184965f3c3a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/ATN261139605.
Dem Teufel ein Gebet (Snippet Promo Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ff1b166261637f5ef2bb25542acf913f9648f2b55c0634f916c4e965decb8db. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ATN261245302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x844426cca96f1ca94be9c03c3efe7a5e991dc5dbd65928008863e38b9bc06458. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/ATN261245304.
Gute Freunde Kann Niemand Trennen - Bonus Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217f889800863681e9dfd1582aa94dc53efaa7bce66f39beabc913ce730b065a. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/ATN261245313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a29ee30a50abe965113957c85756b9a626e21d4fa8eb15d53147f90401c91c1. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/DECQ31500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8510d99f58aaefcd06fe2832b0daaa4f3b68311677b717ac60987f09a42cb49a. 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/DECQ31500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc03d608053d75bd7cba1515d596acbe69307e41c02e490f41daef0d1717852. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZHN32438303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e360e9915b069722e54b62fac9c2d025ea866721d1145f08e7e5023b6b246c5. 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/DE1QW2501082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1fda577fc2502611c50b64ba36fc1c5fb5956e3ede43829b1034f2955cf344. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DE1QW2501084.
Zeig dein Arschloch (Burning Pants Version)
Zeig dein Arschloch - Burning Pants Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d5f5549c935af41f075a260a65387c0a2c0e139f2f98417d6ea3953bdc8da29. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DE1QW2508158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73940a914aa0d6b72d76564601bfdd0f38328ca3e037d5f27e07ae20d53e984e. 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/GBRD52400021.