Dutchman may refer to: a member of the Dutch people Arts and entertainment Dutchman (play), by Amiri Baraka, 1964 Dutchman (film), a 1967 British drama film "The Dutchman" (song), a 1968 song co
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 0xff7b960043996c05b563c8ee527a2c1877f98c885c92500cea292fff87bda033. 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/ba28a881-6cda-4fd6-8221-21b5dfdfa1d4.json and https://artists.proofprofile.net/proofs/artist/ba28a881-6cda-4fd6-8221-21b5dfdfa1d4.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 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 0x5b16d8e03faae46aa186367727ca966df5f683a3b1108693ae7506a1b00dd2f5. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QM42K1723866.
Dance With The Enemy (Ft. FUKKIT & QUINN.)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9dda43f65c675b50571d6414e1f7c0f3fe3dbae4604833bcbb5d05b4c1d179c. 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/QM24S1822846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf6eb551e96135ea49c852a9d843c7aae7ed94db4aafffe4eb663f78b0dc3a9. 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/QZK6H2164048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8a5204e17f32fabf6cb2ad2085aa6c4111200f248db0b46a6b20fb47e29e30. 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/QZK6H2164051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ead5b62f5150e40cd3f5a19f2e6eb6a91d92f687cdf96bb4adfb00e7b2ea427. 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/QZK6H2164052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d515df729898558a9cf28d8bcb90873ed2720af551ce99db30472bde7b336a. 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/QZK6H2164054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83c6aeb5683ca62ee697fde06cd62a2f27589de22c6e4c011a340e252980c2e. 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/QZK6H2164055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c9029faa713540a0ee860f30fee6e0fecea43ad21e2eaa350515e1010fd64c. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QM42K1820853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcf6eb551e96135ea49c852a9d843c7aae7ed94db4aafffe4eb663f78b0dc3a9. 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/QZK6H2164048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5040b0a7e8a9e200cb44ba5f311e1c2fe7c83decfaf80ab3ae0be57da7225e6. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZK6H2164049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x109d9189e356d00f2b5f5de2973763c2d4c744996e566e680bd45ee6cc713e80. 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/QZK6H2164050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb8a5204e17f32fabf6cb2ad2085aa6c4111200f248db0b46a6b20fb47e29e30. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZK6H2164051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ead5b62f5150e40cd3f5a19f2e6eb6a91d92f687cdf96bb4adfb00e7b2ea427. 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/QZK6H2164052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4f9750504617c8281d7534d2bb463bae927a8a8a459a04d23c2dc3bf355547a. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZK6H2164053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d515df729898558a9cf28d8bcb90873ed2720af551ce99db30472bde7b336a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZK6H2164054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83c6aeb5683ca62ee697fde06cd62a2f27589de22c6e4c011a340e252980c2e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZK6H2164055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc650b65e4b4bd6f01f7d974d2cc416148e5c2d6c0ced885e31b6aa749f3e557d. 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/QZK6H2164056.