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 0x142cef516d2e62d77ff0fe66f2ea3dc2fd7708e9ccbcce31a771588980d74187. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/235439dd-cfb6-4b56-a415-a9e4884d1262.json and https://artists.proofprofile.net/proofs/artist/235439dd-cfb6-4b56-a415-a9e4884d1262.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 0xb2318ed199cb50fbad63d4fe4dc71274579cad816723d846910f58e1c416c35c. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:54Z), 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/US7VG1583463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bcdcd8903a868674b4d1109ad1492991122ca15a2534e4bdd7bdf198174149f. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/US7VG1583465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe43f678991d39a820745001337c5dd3a6a35ddc069b35a272c43cb1d8689ab90. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG1583473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43463519c7b70f3f4ea734eff5d89d1a70cbb946509c6ee8968e29971e538d5. 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/US7VG1583474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08cf26418c642d22bf859c68f22cc569711683945cf0eb0479e4dfa80652d898. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/US7VG1583476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2b4c9808adacaca4de55b71eecccd98cda28e95c2dc38eade5090f2f7bf51a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/US7VG1583477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b357430957af3316ef9982e926b6fe5211e09a29fa0445744e2ca935256b523. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:30:43Z), 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/US7VG1583479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a6b797552fe3b86943557340eb3811070a585dae00429770552b2fa06dde960. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US7VG1583480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029ed276e5ac9bd2383165e3d01f4bff9810ca33434e21e3355069460efa289e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/US7VG1583481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b9906dc583d660985296465fd9b3971de966f0707e7cb8a0464120b4f3a1b31. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US7VG1583482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6367f7c93153db235623d90587cdde81a82ad50edd838f31ea6b9b0b7cf7db1. 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/US7VG1583483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ab49bcb5f6bdd36a7e65d8f83e48fa5bef4e11f625be30e544750d714881e3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US7VG1583484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e883244722667f02c2b54df3f6ec81fb004132ba060c92ac6163866e00825c. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/US7VG1583485.
Kuarto de Empregada: Pool Party dos Mouras
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecd009f570426483feadba18a9de7af2735e38bc3b1c9d1942d4c9e6c261c0e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:53:07Z), 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/QZHZ51939549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f541654ec40bc5fa46869b7cb8ae1d1cb7e2ae9150871ce475667f539389b25. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZHZ62278217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96ed3fc978d16e4f0358dcbfab6f2efe3b0b5288cf0adc7161f5151c067690c5. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZHZ62278218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b34c4191db991ad88d49b1eb6c6b946fed5aed853f4d12b71830c7cf98ee9a3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZTVM2484760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c49cc00ce8f0a0c91c77ebc19f682d6297f6890a7c9c09ffd7e23f773d3c1f. 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/QZW9K2456795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e00675434b1aaff1ff1f9fefa3963cb148566d43763f87eb321177ba1944fe9. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZW9K2456796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d11cc76bd6142b23ced670de2b751818132499d5e60652235758a7010c5bd7a. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:03:46Z), 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/QZW9K2456797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e3b5fbf5fbdff712aac043dbc3d1027a8ccdbe0ad63589431a8d3392fb005d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZNJW2510529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b594fe2ff7015ae9dd54891ba163ede8c7c4a6e2707af47e2ff8c35bfcafe7a. Chain 2 (Bitcoin): anchored in block 957778 (2026-07-13T00:08:48Z), 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/QZNJW2510526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb15b00771d19ad5ae5f02ad57b65d76c7fd996730dc39c12ce5146bc608c670. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZNJW2510528.