Don Johnson Big Band is an alternative hip hop group from Helsinki, Finland. Their music blends influences from a variety of genres such as electronic music, funk, rock, jazz and hip hop. thumb|right
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 0x0f9795ef2c2d1a3d9d7a74ea5461238f2c0f8abe657ae83e06f8232a182d3a1b. 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/c7d6c882-45e9-4d17-acdb-f0ab17c68a46.json and https://artists.proofprofile.net/proofs/artist/c7d6c882-45e9-4d17-acdb-f0ab17c68a46.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 0x48e749beecb8220e6837c64f1d1756126c181f6702f64d84938d138b90495f67. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FIPFP0300070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa86de4702cfb4fd53a722b38bf2a1fd2a85d7009853da58be3372cd40ed7d4b3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FIDBB0600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871dc042f950e106e87c27fa3203a38feeb1716ff39fad278e70f50a311fbf9a. 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/FIDBB0600008.
Busy Relaxin' (feat. Emma Salokoski & Felix Zenger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8d3a96f33d86b22a4b80813ae28d7ccfa79e7c249b9a069c02d3ce5ced1de6. 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/FIDBB0600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e22602235470259ab41f52a11ec9e8a88ae0517df9ac2221ecdf05df6735f5e. 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/FIDBB0600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x822acfbf67646cf89c699fd963d60a8b1da7125c448ada73d3d5e67cb2f6b877. 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/FIDBB0600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99a5a40979a065738003f3ae589d3eb6401ebe9ee55178102485a9fe47bf93af. 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/FIDBB0600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb3a664c76ccc938446683fa499d56369a76717e944501740f1d497aec78b7a5. 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/FIDBB0900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa78da1ecdad28e4b4c336b5fd04d9e58ecbc07ed521e71fdea3c2771e9a3516b. 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/FIDBB0900003.
Dirt (feat. Emma Salokoski & Pekka Kuusisto)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12084a30bdb6ba15aad6258e874e7ea980443dcc04fb5687b9c5b5d5cee513ed. 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/FIDBB0900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94a61dd5dd79109da90823004d9139736fd9947fc05da3cb78aaa2c58b015174. 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/FIDBB0900007.
Running Man (feat. Petteri Sariola & Johanna Juhola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5030a70dcd59fa898ab6a40142f164a8b47de8c85282f80bf1f9a7832fdc1e57. 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/FIDBB0900010.
Dey Don't (Don't Dey) (feat. Petteri Sariola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5467d4c6d549724883d7bf7e5003b3bd60a2ffb8f5970d24c9beb8ca83a36ac. 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/FIDBB0900011.
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 0xeda2c0d7548d7dd448873856c71175d008a48d2b03d5dabfb14d1bdc8deccda7. 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/FIDBB1200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf92787c8e314a2055f297212febd665c0caaba04f1b9be8ff95ce8e6a303ebf1. 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/FIDBB1200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4723ed813a0af9d6c4b096a9f89aac11fd5cfb0eeaa1c379193ab1dd5f161981. 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/FIDBB1200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f668aecf72eb1d163c00e475db04956e465222fb975e4926140b3c7f7e65a26. 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/FIDBB1200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f1809b3eb54884c860cf078504c3fbc754c25f6b3efde86e6f3139579f1dbc. 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/FIDBB1200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7372a41c4284d70a69e71979347cdfd7f60ad70130c7a8910072bed378a58222. 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/FIDBB1200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fdff0903887b267ee4b13d58eb8140682425b2076715d63b01ee46ecd2c657. 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/FIDBB1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1770fd0a602fface05ebea8ab0612afbbf592eea88933326d6d15eae7eb39d1. 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/FIDBB1200007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc407d50521583644570d1beeea2c33cb620a31d0c01565b0ec912acd695c02da. 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/FIDBB1200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c64edb998b25e6577ad771f5275aa5f130df224f1be8a5805caeb071d0ae68. 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/FIDBB2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b47503a34e762b6e67d4a87e8b4751fbb9d66e85a951618f0cdd3e4a6f72a82. 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/FIDBB2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2ef1d8ce2bae80b5ed1b3f1b55f847d85d1bab58a9b682c8a3045ec9f725fba. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/FIDBB2200003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc947c0e8e702169b69a1656395c55414268d0c37e6b261d5a707b67e805ef2f2. 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/FIDBB2200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5992b3f1ef4af1167d66acbb1bbaf7c4b43dd7ef8e594a487f627014cc49d0dd. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/FIDBB2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4376bab3ccfc934967e03d62098cfc759fb71ebf6f3b405c467aa78af1c478a. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:49:05Z), 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/FIDBB2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x581061ad7f2e0c676fdac1a61d787dc0172df2e1629ab3582ed594d0bf9b9edb. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/FIDBB2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75326ee55df6fecf14ea74def0a2c69cd79a0f048777f9da0790c4a1a29a147d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/FIDBB2400006.
Empire State Body Building (feat. Verneri Pohjola)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bcc41225fe0f75d0aea32e8725b4bfca3ec412cf7ab2c255c010108a7916613. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/FIDBB2400011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59025b3f9a15e3c2628cf0363597e56084f4dee1dc91c1bc4d4eb8ca782d703. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FIDBB2400013.
Path / Polku / طريق (feat. Ramy Essam & Tuomas Toivonen)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64103366223775fb06f4fed55cfe4a26f257ec0cea49eb5e4dc7a13bef4d0b79. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/FIDBB2400015.