Korzus is a Brazilian thrash metal band formed in São Paulo in 1983. They are one of the first bands of the Brazilian thrash metal scene, along with bands like Sarcófago and Sepultura. Their first rel
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 0xea5308c3545bb098541db50143a1f82cb8f2f39156531355919c7f7d0b980765. 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/0b1b6322-fe25-483f-87be-9bfd9bb3b0ff.json and https://artists.proofprofile.net/proofs/artist/0b1b6322-fe25-483f-87be-9bfd9bb3b0ff.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 0xa3b8445b8dd373d05f03fbf9d6cf54c4810ae1c1370042bbe55b8f1036d9b34f. Chain 2 (Bitcoin): anchored in block 957680 (2026-07-12T09:07:22Z), 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/DEU601002958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67246d27de791df4880e628ae2834e845b51b911c69e5bdeef8f8753726b46da. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/DEU601002960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d8e4bbd2a3774ab0115a6d446a6ae58824c3aa1af628921e439574e6e9fe277. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/DEU601002961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bb83d06719ff89a9be04a55ed189223f813890523315bc2525873e3bb6fe23. 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/DEU601002962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f5b9a01a6dfe0fc8a612cb083a594aacc20612dab6b9d0e9aeecbdc0f22be5d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEU601002964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74bf02d6bf888233e2079d888bcdf7d7a1d49bb0b60428e62d3aa5f866796c48. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/BQV8D1100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51f96db96913956973481630b0ad37cef70716c7124adb326762fa9bf9e9853d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/DEU601103438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f94a73e51e7c28719822a9f266027e4ea5211268cb720fb8dd190b777dde659. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/DEU601103439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de80d524985a872236b952ff8a359e1d783f50f75601d970e76a14d2a6d4de8. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DEU601103440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea7fe4d6fa3d6caa091a72d7e1d7d5637bf1cb9f8cf9edfb11d4d0af5ce059d. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T13:27:11Z), 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/DEU601103442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe698df3d4ce05647ae5e6af6a8f7c808b310a9c894c7605a849a8e1addf9d0e2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/DEU601103443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6470aa0b37f769fefc2c24f81ec41a0f693711f02b457fc1e8bfadffb3843a6d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/BQV8D0600038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba72569985af9d7de40cf81978d0b95348a6019082356d5e2697ef75aa04f71. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/BQV8D0600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa196efbcc57c5a92115ac51b6a38d478b0c27ba28dc0d4fb13cecc78efbf2f6c. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/BQV8D0600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde1564837670417c7e515d57c7886313a816625ed49efa22dc92251679353480. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES71G1724123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ebe95951aa39ed87384bee27649232affb6afdb74fb0a5fc51e864824692e8a. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/ES71G1724126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8f3f9d8175ffb22408f7bdc9212b72178457e92d2bbd2036b9c691c3618543. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/ES71G1724127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a33b9626616933133b619db8989466c245f35b708f28836db372f3337c38a12. 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/ES71G1724135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc52347f7620b1ae9b3fbe13995d7fff09d586f715b00bdca3fb6f43bc97ee7. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZHZ32164215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4edbdcea823373bf36b4113a8c5c475cd55b65d0ec04aaa27704abfc92e453a. 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/US7VG1318077.