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 0x9f5bdc9adbc1202d192cb7524c00d8fb7add4f81c993183dadcdb5090a3a282a. Chain 2 (Bitcoin): anchored in block 954065 (2026-06-17T08:10:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53fb777f-a060-4eab-ae08-598c9aa5bde8.json and https://artists.proofprofile.net/proofs/artist/53fb777f-a060-4eab-ae08-598c9aa5bde8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
TV Friends Forever - Der Original Sound Track: Die Mumins (Romantic Version)
TV Friends Forever - Der Original Sound Track: Die Mumins (Happy Version)
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 0xfdde47a426c2d3537359ee6b7bd7037fe5374bd0211f11603cd9f29fa4a5327a. 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/DELB80902102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d561dc701b69823d76128b0eb6e1e42fd25aa07c7e9d016f8c3c00fabeb0628. 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/DELB80902109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697dfb88de9faa84cd5f015fadcbe551fefe619dbc6cde5e0768975aaf344065. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DELB80902116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a248ff5965b1cf19bd9bd3abfb0f63f3ae05a5870bc69effff41e7939bfd48. 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/DELB80902117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43832f7ef289349dbca18d894e2e3c266cc18f77ab3d9486afa0c7d25c369af. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DELB80902120.
Weihnachtsspass Mit Pippi & Friends - TV Friends Forever
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7247d372c3fad734e7842ad6cdc9e9b6f41c885ed6a0e10be5b78188b051b576. 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/DELB80900522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c52785db03d8f0f15c254267b6e12a658ff89cef35630857a7b9d44bfccc0e. 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/DELB80900518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2790e9d85efe55c39bb0a7129692cd94d26ac44c41980b5bda5eff1b4cae5f6a. 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/DELB80800201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a723970bcf4adf11d2551018df8eb92e7b3ec2fc0023c3e32b4ffba1f664cf1. 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/DELB80900523.