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 0x9d6679e28ef8d97667186cfcfe60c104b14d8b7fd52b9e4f324fea4b78090e25. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa49cd24-ab88-436c-aac9-31b11b1bd475.json and https://artists.proofprofile.net/proofs/artist/aa49cd24-ab88-436c-aac9-31b11b1bd475.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die tollkühnen Männer in ihren fliegenden Kisten
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 0xe57af225f001c375d9bf03d27520e3cd1c4b1f37b6b5621ae1540069e71627bd. 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/DED810107820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ef9199c0fe81a75a2733b5acf767eb6665c4725d6711f444a8c2db8419b768f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DED812470070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2296717ef941ca1e0fe6f2ffd9834e57ccc3bce8564df88e961cbce65915c9. 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/DED812470090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacc56ddb62b5ba1ed194091b8a36b24cf2f0e1c9a83bb786227712fcc90498e4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DED812270310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c4e556f9e500754a7772e7413b5856a347b99a8b23cfbd306bd271b73d819d9. 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/DED812270340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ae7123023092df2e0153de8d98fbd64d8d2c77ab1554a73e0c27286aacae09. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/DED812270350.
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 0x24c721469d832314212ab97a82f072392baabedbc4b99ee4a0c088174e5a33dc. 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/DED811771210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650282706f26655170b9789e09adf3a29ce832c323a36c673a2afd08aec4deec. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/DED811670040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc6bee9e937cfff1e4ad4d467552ebb60e1c28d5cfc7a87c7a9bacf1dd96d9a. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DED811670020.
James Bond 007 (From "Octopussy", "Dr. No", "For Your Eyes Only", "Goldfinger")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19fc30226f40e7143757ab57868cd563d5d94a6256f7b5593b2610501aaad36b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/DED811570980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc38c34a6d1f136cc1c9a3dc405ab2b6a6042963ee3fe3b34d12dc0d807a61e6. 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/DED811300190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66f2206072277fee14e444b248de7721bab8159e61e841c3e4dc4d6d665bf42d. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DED811300250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72017f22e2e8547abed8c348b4f0e9aee4d8f6d6551d27c0e22008457765a5f2. 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/DED811300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db2ea5ce08fbb57fdcce33f4aa4ed9f2518c22fcc5461ea63887eafc9dbfa7b. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/DED811300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16d0a53ec99a5f1f8b9877b5a61b4f1ebc387be5bc28712d3982b22c3545cb4. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DED811300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e396f3bd10190998146c25270809be52667260749c7bc4e4d369722c056562. 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/DED810900700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x619acfb48f241334b73bcbd152035993d95ae9c6384c8b5179c26935a9f9490b. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/DED810900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cde0d09dd7ba76332e43c5c2bfe4241fddaf5a6552e26d7330032d3e0549d53. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DED810900070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3158fb3e76d0866e857d092dde3496c7bf448a38ca9426ec2b39a135992a25bf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/DED811871210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7abe72e921929007371d493018ce234347b6b487e9d678f13c1495dc12755e8a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/DED811871270.
Kammermusik Klassiker für Blechbläser, Vol. 1