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 0x1816b1f45b97910e750620619af36f3afa800f78c2cfa0b754fd125b5aa5f743. 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/d7b6f3ce-9c0f-4150-9f0b-72d1a7317c8b.json and https://artists.proofprofile.net/proofs/artist/d7b6f3ce-9c0f-4150-9f0b-72d1a7317c8b.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 0x29c823cc3e1563e4990c7de2c00af71cdcf46cde559feb1c75f38ca5fca712d0. 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/ZA82Y2100192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5888f5264bfaf5fa408662fb3955187bf3a4aa84989db67ae74e85b115bf3131. 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/ZA82Y2100193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0ad77f6bedbe20e1fd72ca9c7047810a3d2d307225c9e52780e0ebecd3ce8f. 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/ZA82Y2100194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66606e62af38daea62792327603bfda9ea17aea3dc5305c3b3e7f14b8341ffc3. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZA82Y2200043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x484fe005bdaf0bf70ab0b28e71ed80045bb7905abb198183f862c22c8d7c37ac. 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/ZA82Y2100187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b70a5fcbd37f075eb80ed63355516bb4d09ea25d5e2b1f5731d1f389acc3fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:11:58Z), 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/ZA82Y2100188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f602212ccc1abaa17882b5dee8e6059acff7dbeb70288d2e0760fb190470a21. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA82Y2100189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ad73fb0ea925a90d3e859a1e3bfa8613b7218102bbc88d52a672383fc5660f. 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/ZA82Y2100195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7881297a462b6f1a3aefbeb296f2ab513890c850a681399c1bc3e70b5ecf0ef7. 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/ZA82Y2100190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7767db67bc324303f9c0cf192d556eed37952818c86de9ba05f07b1ff3c0c846. 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/ZA82Y2100191.
Dithapelo (feat. Nomcebo Zikode, Master Chuza and Tamy Moyo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x434806691fdc8d76d90a02337a761c7d600516eec41b7a67cdf76e69a58c13ae. 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/ZA82Y2100176.
Kenna Moruti (feat. BAYOR97, Master Chuza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa10aa28d8b9f9a9c368c3f7925b113d9bffc67f63828d26ac16093bff2c18363. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ZA82Y2300106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b755f44f7ecebfde30d4d29eb3ee174c97cceef0c85512cd988471fcb9233b8. 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/ZAC012301193.
Rain On Me (feat. Team Mosha, Prince Benza and Master Chuza)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceb139354fa752d53f37a84400358aa39641b917b986156e538792ac7bbe7057. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ZA82Y2100241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ea002b9b23ffcee79d855ed75002345d2b0f695cdefb69eb4901b1387e1f5a. 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/ZA82Y2000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98a75022c50ac9da0778c77e22b7148d2eeeb8bff0eab793283020f9241a2c16. 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/ZA7VV2410031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e2db6ab2fbdcbe83451e9444b33db39c015e4e550338cab95486cccc2146b0. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/UKXN22573632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3edb88623535f6a5adfda248655bff0f8ff206ed784eccfff84adc7e6b283ad3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX3Q92549430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5132ecf52a4196c70d4b6f414d167ad170005cf7b5d1064b43e3c3888e591b90. 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/GX3Q92549434.