The Brazz Brothers, alias Brazz Bros (established 1981 in Langevåg, Sula Municipality, Norway) is a Norwegian jazz band. They are particularly known for their improvisations, and for the cooperation w
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 0xa0fd4c7aa2320f082887af7024609bcfee2af87c3d12207be51c04dd629bf399. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e9f8a58f-ed44-41fb-8ffa-fbcd09d903bc.json and https://artists.proofprofile.net/proofs/artist/e9f8a58f-ed44-41fb-8ffa-fbcd09d903bc.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Julefergå (Music from the Original TV Series)
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 0xcc8d9c89eb88c69d6a6c36f5924275c5fe0561897b607da1e791efcf8e751db5. 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/DKVJA1200901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe54e628558622406553b87a9b75e6daef35bd014369ad670014ffd31b9f8dc. 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/DKVJA1200906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf40222a94b620e22f7b161a1183b1ef582a6271b768f70f14a31540980a134b2. 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/DKVJA1200907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10156d399b228702a162124924031c2a605a237fc02d9172c36abcac407853d. 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/DKVJA1200902.
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 0x54e30480383eb8c9372d02fe7fc2252103b47113792fcb85bc013f722f364cff. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DKVJA1200903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c47cd99bd0a4630a23866f26c600a3c25c1233cdc2c8d318632efb9b43f10c5. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/DKVJA1200904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34021bc0ea32cac7d93c84c6c6d1e399c82a37834dc77a413067911483b0aa1. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DKVJA1200905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e22932b361499ef177ea41a1880258c7304c0fc538bae7cef24b76ab463de7. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/DKVJA1200909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19284e62956a1495254fedd1ab3b954453c5872e0cc634b487d11476e65450b2. 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/NOYCH0401010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b9beb67eef0b3974e980c58d6083e8d01c0bfd71576d96c31d1fff52f276bc. 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/NOYCH0401050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32ded445877636e065d49fe3c6b8a7ffbe628db3c90c85e9cf6ea7abba2ae022. 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/NOBBF0300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd3981a28d9ee81067c0b5d8200e9009b529ddb807a7492f0c8f52b1b6d1d4b. Chain 2 (Bitcoin): anchored in block 959146 (2026-07-22T17:08:09Z), 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/NOBBF9903030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5013b94ec4a0d71263afe298471e8305394244e9276c3e0a9f8a09e8d459ae83. 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/NOBBF9903060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff897d38d225a9cf2ddd4d5aed29ac5c9a0d9af790eaca3a350d074f47a1d32. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/NOBBF9903080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e40350b84d3841fa641444b74452c9284df640ef7f681fe4c5acbdaaa3298eb. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/NOBBF9903020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a7eb790c246bb7a4eb356b0baf28a091366737bfc42f17f121d26ee7605cbdd. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/NOBBF9903040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ac3f8f62eb0168e1490f36ed9af1b81d11aa0c5c4cdfbb134d1ecb6d92e6633. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/NOBBF9903070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11e98b0f28bf6cb83c886f7e3b04bd5b1b0c876e43039511ed0a333d2eea8e1. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/NOBBF9903090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55719d07cd12351518764f733e5836366ed07f0bca894b5233607ebddbdeb24d. 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/NOFQP9441100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7be0cfc1ab6009a12863ef2a93dd33a258dfffaac9d32a007e884fd8a80481f9. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/NOFQP9441090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe036d5256186da278c980cbcd34e9fa641140e4433d7cf917ce239ef69a8a35b. 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/NOFQP9441120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0767ae5c45a49104db264a19944794d26d311ca8c09eb0bb3525cd655be97424. 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/NOFQP9330040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1589ad1d0fb314fa3a5a0b92f46292896b8464c9b5723b34db44b7f80a6bee. 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/NOFQP9330050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0abd5ee7f6bc1cc279b674a762d52bb99fa4b3f0c264014bc32495906adb5728. 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/QMFME2249746.