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 0xe7cd44e77da84a8b7df07b2bbdf581146a9fce6d7beae0c168652ab488cef3a2. 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/dafdfe07-5e06-4856-8f20-e5e28d6a0664.json and https://artists.proofprofile.net/proofs/artist/dafdfe07-5e06-4856-8f20-e5e28d6a0664.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 0xb7d2796d64fe364f7846378308b9fdc496cd3f140f52f41c45cc65a098c12b7b. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/ZAEI72000381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55741128d520c734dc3109ff401cd45dcad8e6365cc74ba4fb3e13215ab9abec. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:28:24Z), 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/ZAEI72000382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca329116151b65f1024752d6806c8923be7efbbaaf4d48e54f13b05a1cd18ca. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/ZAEI72100569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf763b3993644d84c849456fe34f1275172aeb9e6c6f9fd0a862741f531b89a52. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/ZAUM72201548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299543a21e79c052426f3fb04afee8939cd5ed7d3a6867527c61569b9e8eff51. 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/ZAUM72300676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f1fe0f543336518b8141d544cf0aba61f33d82f25d138ea41381d44fb0d117. 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/ZAUM72300864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed7f32df1f44acfff345c84b2e25c99c07714f6b466578d9a6cbd454e3dd625. 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/ZAUM72300859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5f12df15b7751026311ca1b9f961f68492b413489cfd89f21edfa0e53ce997. 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/ZAUM72300852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83563492698d88e4414fe68f3b382a23115251ba50df469f81e3a6f13d30747d. 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/ZAUM72300861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829f837a94390a9c1889e898db69b6f460d28f93d6d52bd9758b5b1f3cd23dbc. 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/ZAUM72300862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cd17ab60f9b68ecd5c9d1752acdaf867f291ea4b0cf8a6636c9abc66b84d60. 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/ZAUM72300863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f1fe0f543336518b8141d544cf0aba61f33d82f25d138ea41381d44fb0d117. 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/ZAUM72300864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5f12df15b7751026311ca1b9f961f68492b413489cfd89f21edfa0e53ce997. 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/ZAUM72300852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fb07b5df2d275d342507cef5367cf5ff301a3b33bf451ef25bc718a3ce22e7. 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/ZAUM72400246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7b834bbb4fd3596fada786abca23e42ea3ef554361a52ee1f27c3d92ea70657. 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/ZAUM72400262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83563492698d88e4414fe68f3b382a23115251ba50df469f81e3a6f13d30747d. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/ZAUM72300861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06f1fe0f543336518b8141d544cf0aba61f33d82f25d138ea41381d44fb0d117. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/ZAUM72300864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7314a649ef16d4d9dfb15a34a856ba137e5ffff3a2c522905f45d8d14405c6c2. 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/ZAUM72400247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829f837a94390a9c1889e898db69b6f460d28f93d6d52bd9758b5b1f3cd23dbc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ZAUM72300862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ed7f32df1f44acfff345c84b2e25c99c07714f6b466578d9a6cbd454e3dd625. 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/ZAUM72300859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76cd17ab60f9b68ecd5c9d1752acdaf867f291ea4b0cf8a6636c9abc66b84d60. 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/ZAUM72300863.
Shona Kwelanga (feat. Mawhoo, Da Muziqal Chef & Kabza De Small)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81167ac7b94ceb49bef7c15e5ef156ad0bfe693288a76632d3c5d1432bf238dc. 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/ZB1OS2200109.
Zanzibar (feat. Msaki, Kabza De Small & Da Muziqal Chef)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x736872d40be87c225326a439ba7ae4c04a0776ea71cb1d4105f927137371a4c9. 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/ZB1OS2200115.
uKuThanda Wena (feat. Bassie, Mashudu & Da Muziqal Chef)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891601ca8499947e33e80c1c3a741e971d6e792bbc8592d53567b0d926aa1a0b. 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/ZB1OS2200110.
Abafana (feat. Nkosazana Daughter & Da Muziqal Chef)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb31fdc8ae23549cdf82e7c9880c74c0bff4ac62c856ef484103ac78d252e9571. 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/ZB1OS2200117.
iSandla (feat. Da Muziqal Chef, Thabza Tee & MulumNator)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124045691c090d13e3e31924e51b90bbb6eda83df4afa7c864624508e68401b5. 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/ZB1OS2200111.
Bambo Lwami (feat. Daliwonga & Da Muziqal Chef)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39fbca9b95596d0b1d4ec4ad5ac0f8136f77112f78fea27c254dff51a3e941a4. 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/ZB1OS2200116.
Juku (feat. Visca, Da Muziqal Chef & ShaunMusiq & Ftears)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0506de2b7f09baee8f7e5549ca212304857f07d5d55f68d0b831eeabdd71c7. 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/ZB1OS2200091.
Banganoya (feat. Stakev & Da Muziqal Chef)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4bd414f64de442a01a0364501cb0fb29d7d27b5451f9cea0161f53c30b30cc1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-22T01:19:09Z), 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/ZB88P2100034.
IPlan (feat. Sir Trill, Da Muziqal Chef & Vaal Nation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc159e80c318109d41174448c37286f88007545adbe20016c10842ca287250b6f. 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/ZBN532300006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98707acf0727f0cd9dca7f4ca8a340abd08195c7d81f52eb68360d059cc7fea4. 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/ZAUM72400445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe569de4bbc87e0bd99e2907955d1112a442301ed186f8e589e12322ae503dc16. 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/ZAUM72400449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8cbb13536457e3bd0e74e33211e0398a307301e764f5371ba4fab26b77a4cf3. 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/US23A1575043.