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 0xd90f05a1c9c7ce5b37b3263ce74a8a0883bfb4d3213b7d1f6cd5e96a8a5015bb. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/2556f87d-0d10-495b-80e2-21b160b7564b.json and https://artists.proofprofile.net/proofs/artist/2556f87d-0d10-495b-80e2-21b160b7564b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Parsifal, Act I: Seht dort die wilde Reiterin! - Live
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 0xbfb56f414b10190c6c704a5307a1cc9e2d5ef1f97f8672453d60297634fe27f8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEN962433303.
Parsifal, Act II: Hier war das Tosen! - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33020fd8015c036de429faeec7f9d030c5c46bcd28eaa425b069d3aa0a0cdf9c. 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/DEN962433320.
Parsifal, Act I: O wunden-wundervoller heiliger Speer - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a70321676c9f689db4df39120e4ab63f93c787cdac6869b04d25ad009e7fbe. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/DEN962433306.
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
Parsifal, Act I: Titurel, der fromme Held, der kannt’ ihn wohl - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10493b70599a0c85323530e46bf9aa805cd982c068e3fc3bc4bbaf1266112577. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEN962433307.
Parsifal, Act I: Weh! Weh! – Hoho! - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5ffedbd6cf6f732781a01129257d47520baa2f07485dc6935118b7ba1b59d59. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/DEN962433308.
Parsifal, Act II: Komm, komm! Holder Knabe! - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb030ff8099aec9412057d90bc8bf954b428087fe5356f102400a60b66e62aa. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEN962433321.
Parsifal, Act II: Lasst ab! Ihr fangt mich nicht! – Parsifal! Weile! - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bf17c2511b735f7cd98e4d714bdc1ece05fd71a41e21638e00aa9f763c66fd. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEN962433322.