Arena Hash was a Peruvian rock band formed in Lima in 1984. The band originated from the early "Paranoia", a band formed at the Colegio Maria Reina by Pedro Suárez-Vértiz. Arena Hash became famous in
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 0x1ba20487dd70c10d435d77617bf4daf26bf1becb89a80297185d379af8044286. 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/370b2abc-149f-4ec6-9fad-929ba2eb3722.json and https://artists.proofprofile.net/proofs/artist/370b2abc-149f-4ec6-9fad-929ba2eb3722.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 0xed9ba3da785304f43b702ac889e1bad345ca7fb8f1ff52e3b4f335c6be26d6e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PEBQ91503732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271ccd18fd4133b9cd5b8eb81e75123e5b5e241926037d76f9ef718b9a6bb66c. 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/PEBQ91503733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc744cf48ff60522763ccfecd5cad8c959e4dee429147043eec1a291c8df1f7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PEBQ91503734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5947b5474bf03058ad75e203da0b57b1feca3b94f3512e0807b2db27f14040e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PEBQ91503735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd171b16134427fb51e1f967669aefa689a01e198044cde4d03e974c62dee87b0. 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/PEBQ91503736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c1e688ea6ee1dbf9dce479037faf9213972b6c27bcbdcccc0d9a4770ed9298. 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/PEBQ91503737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18553e6626fbf2ebc44642bda7efc44c806a2fcbe290fb4eb05199853eb34a6. 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/PEBQ91503738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab26fbe90aaef9248371e47761abdb952c5eec38d0a77cdea0e6b70ea8c13ae5. 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/PEBQ91503739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6c103400c7d294d0c982b0ff50112e4aba8185207765daabe32565def407bb1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PEBQ91503740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a9d26da67ab649d36d34fd41f9f400c9539044f5f2829f8283593ce6716ff13. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PEBQ91503741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b6fef123cf3fde6c88518d3d41ab57eacdf23761f74f540869b639770c690ba. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZPYN2262959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f2b5a5d6f60d4b9de6a0a1d3f4c313476743e90a594a6bc67086e7d3ee4cb5. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GX3HH2281162.
Peruvian Rock Anthology: Original Masterpieces, Vol. 3 (1993 - 2001)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c295e4710d590af6add214bad4b547fa8e4925217dc2123ee4d15f6439e184. 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/PEMG90106001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcfb09d1c9722711e0e9d6aa59f100d6eb75d126aff79588b64a12ca42c0475. 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/PEMG99707004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f99c96f45a273bb69909a3e73cbc967915945942fc4dff240d20f7898560b6. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/PEMG99909003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59c5c172a05f99a0cb6b37205f6392cbb68c7407f907a68792d53a94f5e2879. 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/PEMG99613004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf405d1357a36d93161a3af627312cdcf6df808d94275e36e93300b7c88bcf9. 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/PEMG90106006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa849ff438ce403ded6c2a53126408164ac515135544e3bfc99b6570ae493cacf. 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/PEMG99707010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b948af9b4258982442c0ff2c54cdca326b43d784ed872a71dfd42fe272c29e7. 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/PEMG99909007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f6cffbd5b23bf1366af2d829acc080959abd046d8c18998cc1568314265c2d. 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/PEMG99613009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c734f958d226a0ebf2ef2540c16633d918dd503611251ca5c597d9f68cbffb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/PEMG99615009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77963c6c975a4c3b908071308bbba99f48557877519681fddeef617526eb6ecb. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/PEMG98901015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77963c6c975a4c3b908071308bbba99f48557877519681fddeef617526eb6ecb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/PEMG98901015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0585c4f3e1c9856ee2b67e321142a399f8f8451e93f9be5a4f41a0f1753a2266. 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/PEMG90106002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c118734fb78af20bff2d939a1b5ba73bc09c952591fc704bb2b218d4331221b. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/PEMG99643001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52677f053518f284dd7fed5df13b84feb603f94e6444f3e8feb8a4891a8be87c. 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/PEMG99613003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab6a822e0be6791bce8705075ac5719a77bbfb7929cd0fd11e7a1ef90b3252b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/PEMG91387012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fee3a33016ed431e70ffc275e1a59df658fd3aa98d8a34416ff4ac0719362f. 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/PEMG99918009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea5cad5b85d0263a203d1aa37914b46e328141a0924397ed8e5ed02182dc591. 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/PEMG91388002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68230393d661421cbef3cf6dfc4897a45592c5176fc22c11e301fbc553b43327. 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/PEMG91388007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dbc0f52281816e47a49b7b2e07282b3339d4fdd91d8e2c03cf47c7e2e3f1007. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/PEMG91387005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572946138836537ed19e8070d3860293513db20673f456fb10553390e4e5cd22. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/PEMG91388010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb0d600bc7fd18af69cf63a4d1c5ee811813a88c0a5b683a08b60ef7b6283fc. 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/PEMG90002011.