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 0x27dbce0da51253936135930cdac88fc0227a99ecd2d99837bc2fa39839261fe0. Chain 2 (Bitcoin): anchored in block 953626 (2026-06-14T11:41:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/29f922c1-9b48-4d9a-b14d-6b591db6f10c.json and https://artists.proofprofile.net/proofs/artist/29f922c1-9b48-4d9a-b14d-6b591db6f10c.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 0xf877fdefeaba1764bf20a6df4746d5c651ea18c0e0c33c6cf0a0611b28a4b120. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/CH5331700353.
Was wär´n wir Männer ohne Frauen (feat. Chuelee)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2265e869e74a72148da8d8471a7e66b4eea49647b8cd121809a45d3675e0470. 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/CH5331700358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e8c84153cfd40ef76fd1aaef22e430e9dc344b8379581fe1fd579d58aaf515. 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/CH5331700366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd419bd17b36d698c3137943f1edab8009a214c7c6b0f2ef6c361e85612b5f51d. 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/DEF311163508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e1f52d7b89d5a7f7c7d480c979bbdc0a9c6ffc7aafbab8af16f28a4294d56d5. 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/DEF311163513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31520ac44c5cbe16e840cb6a5310ad84710e939fe466cfffbca8ae87f540b009. 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/DEF311163514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffe9e0e7c3a74726d52bb78eef9d1b71f4a35f6e09f564f760c209a5173a34ea. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEF311059304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53aa34cd8d84c41eb1e417a1ce268ff0c6206fa0797893f54bc8694e6dab4d33. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ATGO82500044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf01606d0d6ae777e32bc2a115b89d197dbc23d7ccb69d82e1759973c112f3bd2. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/ATGO82400001.
Schatzi ich hab gekocht für dich (Hüttenversion)
Schatzi ich hab gekocht für dich (Party-Mix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb1dd2820ca47882d3665c23f686bf5b74c802dadc0f5bb6ba0579333662f3e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEAR41542598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d3d1d27232090c48b6e2c12c418c5a68bf5edfde8b1970063c1705f4696729. 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/DEAR41432761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc94bfaf0c0d7fe572d994d9b515fda6b253c1d707326b1c573b240532e266b1. 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/DEZ601205198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80b058e523c70523bd9113b040e191f7dfbb16c3731442d19e70c79e0ba645ed. 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/DEZ921100178.
Mir ist so ziemlich alles wurscht (alles außer Curry-Wurst)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25dafca11d62f2a1831e7c98f3d1c9792b4dab96d6575009a198defbccb6db86. 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/CH7811501693.