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 0x58473ed32a53a7e2901044e234ad6095788a88ac1bb16d66f533b1411e169fdd. 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/335c32f6-4607-43d2-8c2f-c87d2bd2da65.json and https://artists.proofprofile.net/proofs/artist/335c32f6-4607-43d2-8c2f-c87d2bd2da65.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Es ist so schön Soldat zu sein, Rosemarie
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 0x5adfb48825be34c2c1bc538da88f7862b1c1bc5f2cb6928d037ed0ac6d251e52. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CH0270234470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ea4794461bf23eeffae965056fa266a87076e03f4f18a30ec79534d0da9efb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/CH0270234520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45de53e43fab39590de1235d2eb4cb55ae5f85f40f283409c741d210b836701. 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/CH0270234490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93349bd76388b50d36b41ac87c60cadf49f52792e496692ed1b310d4a445dc8a. 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/CH0270234460.
Die schönsten Soldatenlieder und Märsche
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe19c4d0b4491f2cd5cbbc4d2e8e5d693e57d345dbe5c26b4c19f71820af83c. 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/CH0270234530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f23ffb7b4d1be7bb8b00b8c734ac46ae391a2fe398aff3b41cc8a6a9efba02. 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/CH0270234400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86d74ee4aa9145e60dbce7bad08fba79078be98f2dbc9cfa146791bb5094451. 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/CH0270234560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5f9a63e3a3170169328a2243cdd67e0051136c90cbe948b8466d24d5759adb. 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/CH0270234440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad9459a1ef24f265eb49fd3b97027fb9c39503dfa89967f9c1b942c6f2e58fd. 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/CH0270234500.