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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9620f0ab937ad3d45abf356a208cd88f6f2c4cf53b6f1cbb7e51c1d3872e835. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e78c7ae8-2e5f-4453-8607-73d17ab94b57.json and https://artists.proofprofile.net/proofs/artist/e78c7ae8-2e5f-4453-8607-73d17ab94b57.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924f3e6fbda2e1d395597d144c2457a9f69bb54e23b958559997c3a8a19f8887. 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/CH0049602600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1c14736c26f1fbe77e2c6c33354e35b24a1850d8b4a101e0192628c5fdc001. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:12:56Z), 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/CH0049602710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x636b475a86f9585dd988bf385d4d5c23b6703d4d32c920214d70a77512e736bd. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:32Z), 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/CH0510100078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109112e62946cda8d4177962363979312da4cf92e8545202c558d54f71d301fd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/CH0510100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4069d3085f0e024959dfa0170cdc46b9ad55a48c2572cdd870d188906a49bb72. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:46:25Z), 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/CH0510100083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c2aa2395dc7c741a22e67d56715f9d7b39fffab3a6026acf55d8a42f7b691f7. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/CH0510100084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1aa1b9d03abb1e982a3261881eeca1e0b5f7ddd13e142af3936009d081c4f05. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:43:37Z), 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/CH0510100088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8931e05ce528b824559ba02454901c5865732a242c682232ecf977d2b21568d7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/CH4570700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dc8b591edcc79339bad5ca57f34b4d0518e5513b7203c78ad04613b46f369f. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CH4570901202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9e90d0b932c7df3e16f10d87220b387ebf39cfe3f529e5a7311afe2c149f27. 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/CH0049802780.
Schellen-Ursli (Die Originalmusik zum Film und andere Schellen-Ursli Lieder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc02029dc366a44ad5d789c9f3a6785216655c384966a938d9b6f157394ae491f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/CHUM71500294.
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