Stuff. (stylized STUFF.) is a Belgian jazz ensemble from Ghent.Threats Review, Loud and Quiet Stuff was founded in 2012 by Lander Gyselinck, a drummer who began performing live music at the White Ca
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 0x0939ef9e889aaae68477a09c2bb55e4b8325227ccd34c7cadfb41f1db525b687. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/75ffa30e-ebd6-4626-853d-dbb9ffd71782.json and https://artists.proofprofile.net/proofs/artist/75ffa30e-ebd6-4626-853d-dbb9ffd71782.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6913cf3582c4cbc4f1b1b9a6754c57c92912427721d1c526c982944ba95dbc0c. 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/BEN582001248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e44cb18ae29af4408bede6244bcffde32f53606fad18d18e97d5da732c4afff. 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/BEN582001249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3498361828e046ae7c9a339ecae179811bf32c41462d05b83940b75a41ba8756. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:39:49Z), 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/BEN582001250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x723265fa0c799a647b6ce6e25ed7e58514f35a6c766f5e3394c713c3aeba5cd0. 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/BEN582001251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903f9c24a7fa4a2dd910aca2fdac70a354b6c2bbf9ce3fb163418c0d5e62b300. 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/BEN582001253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8211de774e0ea22ba94c2d2e10052f8e94991591f1baf6aa9aca2188d9f9b80. 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/BEN582001252.
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 0xd50358716674bd38fcf34b0eb8d11a651bf9b0843ae932abf74bcbc1a7931df1. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/BEN582001254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x630f71865ae4b608cff0a64d1601e447d30fdfab943577f13f511f831dcaa9fc. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/BEN582001255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342e8b3ad9aa1c67c04e602991f85c8dad5faa5d04ade9b45bb0baa9c714985c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/BEEK11700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894d8597d4c3940d9a3e40643ef46e5d226e0f71c06afd69fad3fb1e65c1328a. 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/BEEK11700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805adef3245cb20a1d731e678a119a90c20f1075aae7ab0960e0394a85c3544c. 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/BEEK11700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe142bd13b5e01e84e2b4be40f18d72e99866e6f0e4d0b6a3bc1f341430a3cab5. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BEEK11700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa6aa3590eb204a5b0965f3c719a5ba840cf9f572369318f70054daf3215517. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/BEEK11700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c1bbe8392a25d9785c83c16ddc9858aa494f6d74917e1eadefbb24fd4c2baa. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/BEEK11700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ad89cd543189b91a1c922c90b6bb62da31e44e9ba619242575024a721f89f0. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/BEEK11700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bce12aaf322b3289e268bb62bd8e990c4ca6321f91a0492b4d61a85d9232d16. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/BEEK11700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aae29de1d9fdc38a5ed90c4f5c38f1688985ae20376f9f2d6b9fb34fe568cd4. 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/BEY341400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x832317a5da372b2c41f9897d688050c95b37a0429018d5073130a680a17c764c. 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/BEY341400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91dc7bed0510f04bdf54c31042697a1187270cceddaf1406a14a53e662823fb5. 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/BEY341400041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e0dbe4aafe9f3599e07dfb1e8150437bd4ae4ce06e982f9c1dfdd40b180663. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:07:55Z), 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/BEY341400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x206d70839152a9be0b07fcbbeb2bf7b71fa986f1b57a8a47c4047059b208d47c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BEY341400038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe848cda8d359a4ecc168650f5af557701e18ca062f3b1b9461d0bab89807a2c. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/BEY341400039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e35b8b5137bb2d50469ab163dacb63e05f7f84fd5552f2ed0a5a872fe7a3758. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/BEY341400040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65929b156fea75e82e93b9d1cd07f7724ea8cd26f092a9d40f6048b7f3ce57b5. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/BEY341400042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ed2845e4171207ce247c3dd29ac01d5a148013f47002a02b5b2fdfb294d5b19. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/BEY341400043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0445937f1b63272eca4f4c969fa34d7e15f30b8ae0658b40be79efe9f9ecc0a. 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/BEN582100804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93e831387a63994fb3e896a856a30341bacf4144d759b910aa317c60300f8040. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BEN582100805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c109d94f46977e4717d667d77d48e65c9c4fa89861d4788a769fb450d4f23d. 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/BEEK11700005.