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 0x849c5b950a706720a7d013f4d3b1a6e1d7c471c593479abe5b8134b6ed8d6188. 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/c1ef14b4-9650-4703-b3db-19856df2345c.json and https://artists.proofprofile.net/proofs/artist/c1ef14b4-9650-4703-b3db-19856df2345c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Dansbandsmedley - J.O.X EPA Remix - Dansbandsrave
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 0xe58d8f66c12c6c6dc6f004cbbedc323498e0200d03a0e3cd2739e0bcb28be336. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEVSZ2200801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b2f13a235dab37f881be44877e98978d9668f8218660453e39f4b45dbd802b. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/SEVSZ1802901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b45c21a80707229763191b41d8980d7540839fd3cd9d9b88728a1cebd415ae. 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/SEPQM0613635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5059e2856bc9bee855d552c6533237cb90cbe6082c93427bd44357797c759f. 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/SEPQM0900187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b2f13a235dab37f881be44877e98978d9668f8218660453e39f4b45dbd802b. 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/SEVSZ1802901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1df07c08e94da046eb874b6dc5ba839dbf7932f7a9ed4feb5b88edb3dc33c0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEPQM0900294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b2f13a235dab37f881be44877e98978d9668f8218660453e39f4b45dbd802b. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-21T21:09:04Z), 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/SEVSZ1802901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b940a06f313ec70c0465ab9546d89e481917c0758bbc6436476afa76dca83e2. 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/SEVSZ1704101.