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 0x3724cb8538041ed7bc12c27c9de21e6b8796da97a4836646895e97dd7f0dc151. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/92c8caa4-8144-42b9-9cd0-398881d16655.json and https://artists.proofprofile.net/proofs/artist/92c8caa4-8144-42b9-9cd0-398881d16655.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
"Tierisches" - Lieder von und über Tiere
Die fabelhafte Welt der Musicals Volume3
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 0xe973dd302b3d62d865f0068dd20aa361bcf9647a20d0cd2e64ef1d65238aacdd. 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/DEZC62106248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd7d9ae65386c0414d509b3ba0a79d972ba663ba7c1d038e5a085db1f2c54ba. 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/DENM12000182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e4d654ac8cf03b6bb2fada76d0fbd214b9ee96991eb686ba2fc4bb5ae18027. 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/DENM12100218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4ff27c55cb09d9d5ae866c4bc23f126e9c6c201192aa40e72b6cb959a2946d. 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/DENM12100219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae93700a0a26b866b46d2a6903eeb39b0ed5d55ffc98f308345c7bfb6671d192. 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/DENM12100221.
Die fabelhafte Welt der Musicals (Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc50392c64c42fabc9a778b4e93af812cacfd00078dceba16a43411d3631c3f4. 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/DENM10400144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1def022683430e01dce8b8ca535990be882a8adee2ae86b871f0af798a2945ad. 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/DENM11800112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9643e413e915673164ef9e79030bc0a08f41fe691c57bccd7011937db9fde2f9. 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/DENM10400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x721cc5c6ccff2ca4e9425875ed27679148970344c2befb643692c19522bff124. 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/DENM11800022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd225ec7edfecbed06164e78dbfbff05dd5309fa1bfb2e268c51cb035eeca4944. 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/DENM11800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93f5d1015f0d77f074524c4f8ca3a02750c046b46011257f49221832e48d1f6. 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/DENM12100195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56b9cf727717b8253567211bbb37fb5a24219907b4784cd378b2e4e34f101aea. 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/DENM12000177.