Chakal (altered spelling of the Portuguese word for jackal; chacal) is a thrash metal band from Belo Horizonte, Brazil. The band formed in 1985 and has to date released five albums through Cogumelo Re
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 0xe2ad175556c69eeb168a778fbac9757176327819344a3b172f188013b8cf3d72. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa5d3107-d27e-45b0-89d3-dadf361ac078.json and https://artists.proofprofile.net/proofs/artist/aa5d3107-d27e-45b0-89d3-dadf361ac078.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 0x327df89a5b5eae49564ef6cbe9808c747b776d5b57c1de446f8a7914edb724d8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRCOG1002023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3653e27ff6a47fa39101dce5b76858e5c13702f1f0e2ce62762c9333a1bc6f65. 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/BRCOG1002024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd418818a12164bc9ccea61d35cdf132b9d8782d14c46ae2732464ec2dcafbbc9. 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/BRCOG1002025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aa2adf2c39373ce9a3cf4197669ae863cd8cc60958d211b38df9b83b15026d5. 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/BRCOG1002026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3611782d24bc3a18e08ab0e9b03bd6b68d5ac957227c1ed9104645954ae6c88f. 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/BRCOG1002029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb214bc6a11fcb378247d90fd7cb460544df5c2814e61bfc9499de9e651dc6c7f. 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/BRCOG1002031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc43e1281c5c9c6f08b82bf223d001781e09977b700afca4dacc3f023b538345. Chain 2 (Bitcoin): anchored in block 960155 (2026-07-29T22:13:32Z), 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/BRCOG1002027.
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 0xc5bfa270ec682351fbf636197c0706fd303ab8c907cb85bd965d1e46ac4f38a1. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/BRCOG1002028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f31a61dacb92e6cfef74efd0e60ae0d521cfd34da5e4b9e833a22f5aad4f198. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRCOG1002030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8fe315c5ccd6c050a4ed38af5aef5f80594995b291420740ac0d36251418a5. 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/BRZ751300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90acf0af3afb8781dd70129f136734fd1951913af2974dc300c82739e61283a. 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/BRZ751300029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d635cb245f6e7106f84b2be85724ab9ba8097c22c85353e423eac888f3e9bd3. 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/BRCOG0400149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2df5e60d0e1fcacb7052f9df87fbf508f1308760ca0422f3dc5b2404c814eec. 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/BRCOG0400151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x927f883523a28b28a73d40eff921f232e890264957e62e297bc628edbd44eaed. 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/BRCOG0400152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8c0bf1b78a883eecab776263cc8cae4cc0e9d08d40cab6c5f506206781dd7c. 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/BRCOG0400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fba359d8672885b3a8be48a882e2efa5ed1cf8e9f9eb745fbe6fc52f1b4484e. 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/BRCOG0400155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x522b88800b8e483bacf830bb9abccdea19dc3af55e3a3593a5fa7e03050230dd. 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/BRCOG0400156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15bfcea6c8c4da022dcb120792f16236226f7fdd2ea768286d030038597df2e3. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/BRCOG0400150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80488ecfdc06dc237ce97b534f24d19556daf3051e9d73879673331dafbfcb0f. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BRCOG0400153.
The Man is His Own Jackal/ Death is a Lonely Business (Remastered)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24c0ea4c482126f9452e933ac01c82ba0f2469310c129d2b22e61ef33591276. 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/BRCOG0800077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2d2e01316382470457faabc90efe36f82bdf9969f23ff6c2b5d4beadb6accf. 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/BRCOG0800079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf57fbfb0e8317f81cc10ade0bba69b59c6845413365b9f773d55f5052ef15b. 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/BRCOG0800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf65888a914b31594d7a9691bd2bfad20b30849ac981aad236030cc41798a7bd7. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/BRCOG0800078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9205bf19021e8ae8f2716e095986ee8920750bf8bd35f866316f77cea80f4cfe. 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/BRCOG0800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a5b345342d7258bb68604a42b6a3200ef97a483d34de97958b3027f408e2a7. 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/BRCOG0800091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3e1f5e5c8be81077b7fbdf2457bc409f3f1f4d965d8bcd99d440f78aa384b1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BRCOG0800094.