Bisk can refer to: A traditional Yazidi ceremony involving the first haircut A misspelling of bisque (see bisque (disambiguation)) A shopkeeper from Splatoon 2
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 0xdea2dd8ea540210c7dccf61dd2ae355317fb4b390a757df45672aae4a7d7a0e1. 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/caadf04d-6fe1-461c-b6d5-18dd2965706b.json and https://artists.proofprofile.net/proofs/artist/caadf04d-6fe1-461c-b6d5-18dd2965706b.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 0xda5be3d59be22ab4d22953447dc33d8f056f7dda0187ae89e8397ee1fe7faa9a. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QZ8LD1780645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d2b8131880e5fd957457027d3393b524e74311e9544cf6e21bc4fe9438c188d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZBRF1840030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c7ae1445e9fd7191a4c4eafef4a165a50e588aedd6809885cfe5163f3dd87d. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBHLW2001261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6923fdc40727c22ad77a1f3face459927c8a43b3bc397828e22c66f22d1c92b6. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBHLW2001262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae7533012e793478f54679270073c49eb0381f4c023d67b30558673c13b363ca. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBHLW2001263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cfd2fc7e84ac3b0f5712201d1f3eeab693a14f47ddbb1a4e321f59c6ed065c. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/GBHLW2001265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf721a6bc87e435aab40ab14a303b228c2e4b0c193a8e00471a88043268915c21. 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/GBHLW2001266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54204e49f7a64990de147c05de48babf16ed676b7a66a466e595d1d5ffbb46d7. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/QZNWY2243911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e537c186bbf2e5a24d77a6b481c7f13bcf13277593c6faf1c0c62e82fa058a9. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNWY2243914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542d0bd8494fa02307cb029ef7473a08fec66138e94f96ea944863481f4dcdb7. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZNWY2243919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5942adfe16f4e0296b8f2818972c53670ec6b8ddcbee702b23d519b620a81e6. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZNWY2243930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6724d0b8d88471a120bc8199884aabcaa5f182b7684a0a2a25ee06bb79b44cfe. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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/DGA082307384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe06db4250e1769dbae4d5ec97e987ae22d6c1502540a4053fc54d49f7935bf6. 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/DGA072202288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe109f57c43b93512c553380d23db9dcf390f44d51ecb0d876134853bed0efde4. 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/DGA072202289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e9944993086fbc643950f2a2ee7b5f20655ea8298b5bea8b6418b45875091f2. 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/DGA072202291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72737ec2738ee9ce2145df512c3d346621c09fce64dcbad91d4364302850e0ef. 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/DGA072202294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1550d1be370198a14d4427e01e483e3d1668d884621da76525f94b0d87fc1f5e. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/DGA072202296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f8d185ea0bc86020daf8e1dc83346a31e5c45c175952a54ccb577442e5e2bb. 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/DGA072202298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8a3a34345be5b81c053e5e2ccef997d600532f658c45bb2473906ce0d7f8d5. 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/GBHLW2004225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0266f921268aaa779d25568bee49b00d27d17ec6dabe2fe9ec2c4ecf10ad4d6d. 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/GBHLW2004229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81ea8bf5af2c3d4bc653c7f331d445c8bdb1673fa7fe8fde5e43ffc3adaa9ae9. 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/GBHLW2004231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cde20c1e51c7fb31f24bafb37d051f3fbfb857a231f1f533117dac8e81433d. 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/GBHLW2004232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90091c1e4ed6895b81673750a38b6f646a760f5dd3090ea952ecf45ac9c88791. 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/GBHLW2004233.
Part Deux: Brick Pelican Posse Crew Gang Syndicate
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e3964de31b36b20db8df568fbd283303d8eeede5bcebc94db1f36830cd03c2. 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/GBHLW1800949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a1b60734112d806bef9b9fc989b9e7e477407ec3f0458a9643f02a09b85053. 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/GBHLW1800950.