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 0x1f2176f268360b47cda2f1d536884ccfaf455c51ab473aab70ee65476445a001. 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/855f3a41-3ad8-4431-b6b3-01a67d8f5724.json and https://artists.proofprofile.net/proofs/artist/855f3a41-3ad8-4431-b6b3-01a67d8f5724.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 0x719d4b579d4a6cbe8f9f6f2c7c3b43ac8ae60835427302ecc51afc8bdaab501f. 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/BC8182300165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a798d6b4c4048a83ea88d7a513d1c03995ee5c68cb6c61a80b3c40b78ba15e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BKOUP2400022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e055ea0d16c4b2e301bcf242c75682ac9898f7f8feeeb941b11123eb6fd992. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BKOUP2400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b86ef08cd7bf960105a949a4a1a6320bf38437660e4a24e5c8c82e7a259f28. 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/QZNJZ2475256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed09e10b3bdd68b1bcb6f8309736c3f86e5d2f5aeab469f585c9f35ed261e57. 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/QZW9L2353343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab9b577c7d29bf08c386b6b05e7343f66f1f6f6a8045d21bca572c87c4029b1. 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/QZW9L2353344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30350dd86213095eda292c3e0ef86ff4484a1c429e50bb25519e2b5dac977ae. 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/QZW9L2353346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74503ee092ffa4b4f03a2ba64d54712e455d04ff206f519937f9a60db1f6e4e5. 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/QZW9L2353347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9ab555fbf8dd15c78652081ecb7cf4b87ac84160ad6f3bde8dfaaff7e0de18. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZW9L2353348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a8da5ea5a51fedd957b1c717ec565e0b85c00575e99e29beae05cfe11c1a47. 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/QZW9L2353350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84bdb973f52783686811df40e1dc33e9f4a992c6f169f866d179ed9134bd7e9. 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/BKOUP2400059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe131d5c8f2ee3ce64d5f556b00f54460e3d01c31c79cbb5c20d95fbce8185fb2. 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/QZTPX2439507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d4142a2dbdf54df9d44a527c5f3d13f3c27e81bbd51a55a88d5d4822af5f38. 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/QZNJX2490570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b2decb9804990949cf90020eb722dbb16c1db7631c3fe25cbb948d468d7c46. 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/BKOUP2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf35ed7bbf8a3031a2e3eca74d2c9ff318f774cfa8b787619e3217fcd5346ae06. 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/BKOUP2400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018c9732a369070b59370e5690f85250704c84f3f4a3102f51e48a06ae2e133d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/BC8182400031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa419538376f6e53d2dfdf9b841444e89fc2341c06f16b573c52d2d647b85a6c0. 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/BKOUP2400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028dc11b5a28541977f43117cd0803ca825e039450ccf902d35e963b9ff65561. 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/BKOUP2400021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3074f0ff5dd0414b3080bdc35411772ca62b914b847f3db59484514718951d2a. 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/BKOUP2400020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175da942d8bc66e5cfa4902a6141878fbad1863c41131a47e45dd58353cb6944. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/QZNJV2404422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4da20549f88fd086dc0ecec1570dd3f87939a54f4641aa1ac3e0ae97e240ba5. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/BKOUP2400018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4461fc841827aea0aaaf7a68f6b1c3f0b97a09b1888150e17e4a999c066ae79c. 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/QZGLS2450146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3298d3e0f0ec85a330924c0c07a7b38f44b3c4079856fc3404afd7b057615b7. 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/BX4IU2408695.
Automotivo Tipo Hollywood na Xereca Toma Toma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x069dc77722c72eef6ef18de52a1f1a169bac9136ac9b41afc69deef7fe2a2691. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/BKFUX2301372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1390fc89462fdff8a1b0b1ca7a913d0e10bbeebc27b99d52ceb42b6ff4be0f46. 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/ESA112433691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x667537f35211108b214d0990173235a14c05405cd682a16c866e3f7a75d9f808. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QZGLM2477230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e8731a4bd61d58d16cdc1b0555ae52c3d8b3bef67ff48cd30c1e11dc046d03. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/ESA112432261.
Tipo Hollywood, Se Controla Vida Vem por Cima e na Xre, Toma, Toma
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9432adce2b744a603478462fec6db4fd3dc9d585ed341ae2c61d0408653df9d. 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/ESA112431592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd9242a1d1452302ae67d4c257ffb95c0640517247f0972d0c3175bc01e2702. 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/QZGLM2480331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181c282cbf2ef53ac3931dee617da03caf974b7566bd46af60008bfbef3db162. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ESA122400006.
Set do Zuca (feat. Mc Junior PK & Dj Dudu Coupper)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa212afbeb66f8f4bd000a33a3924ed2fecd1f21a254bb573e0ae51a4d0dff2da. 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/ESA112428930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857eec4668ab3ba4e2f69a6d15ee0e42a98d8ce41e2ed191dc134028a996304a. 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/QZ5AB2422891.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac00b80aad77d39cddd6b5f05e52825914d254d8702189b5bf5166b70fd5e08. 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/BX4IU2404354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64cd2adfec1dacf9ab045b205286fb00d0ee8958b031146a21f02658e8fb5b6. 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/QZ5AB2439950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce7d66d7e10200e0d17f77d76293d00dc721d93078f9aea3f3a3a3e8826501d. 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/QZZEB2398687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d1a253d86703e15811c98629258a1dcb68df6d07a8649157f69b9dff4de0ed. 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/BCA2A2300316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c130a15c08ba771e469754a47e29cbbc24436c59b6df92d5ca94a3d944725ec. 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/ESA112318722.