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 0x3c4d338fa56fc08124a2bd0f8c098bb0964278d9d523825f37b65cb8b53d109e. 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/1af620ec-8d9a-4844-9b0c-f1e6c6ec30c5.json and https://artists.proofprofile.net/proofs/artist/1af620ec-8d9a-4844-9b0c-f1e6c6ec30c5.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 0x472fe4e37b822acd0f113045e2ee37ccfff621dc83a6b7dcbadbd39424907d93. 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/ZB80H2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c36681e9dec25f6eafdc2a98577fe743bbe6f13eee4cf070bfb5b2c6f5132c8. 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/ZB80H2400024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda09a90b319b58628fa64a091d6a44a49076b21181994916787400f588d97001. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/ZB80H2400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb044046b91238273407feaf8fa7e54d2ea693089a3e2f4b1345af2851fe16d. 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/ZB80H2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bf60e85c1ec21407339385fe3b4d36e9f8836f1574382cd206dd17d072c759. 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/ZB80H2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4583e6a5d15939263a75968230f7e50c82966c0b1c786ddac0c30b6294161e11. 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/ZB80H2500009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x472fe4e37b822acd0f113045e2ee37ccfff621dc83a6b7dcbadbd39424907d93. 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/ZB80H2300039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bae2d229b99f27fb483732d83fdb882e4f23e29423da51b63c25b50cd17aaa1. 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/ZB80H2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c1fa9c63c7dabaeb30be16a1fd76c3bec464fed1912a98d20758a68a535c92. 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/ZB80H2500011.
Mangena (feat. Chley, Kabelo Sings, Happy JazzMan & Leandra Vert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06812ecee4b2dcb91d1469e650f1d9df12810a3602b25b43e11612a0be6d8e86. 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/ZB1OS2300242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x514bbd1f81a9974cbb784034cd1a660a089a241f07d9302146be09ed673e993d. 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/ZB80H2400049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ad9194ca4288299b96c6c7bba4ef3922ff8e9ba1aa3311e0fbdca730bdfda1. 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/ZB80H2400059.
Sinamandla (feat. Lington, Mjeke & Faith Strings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb599024db89e1d964513b542adcfc4c4b8a09d558cc671463af6221591c121. 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/ZA56E2416107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4919c59a4e7644573cf5d646b37dd32dbd0662bbdd78f0ef1eea05fa015db7e6. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/USA2P2423822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925e3f5524b6df0167cb414ad0ad3775ff8d0c1c4fe66b7cb606818934ea9e62. 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/USA2P2351663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039de82f04f665e33fc6769074efac79bfe73ef04487002ead19eb73336da089. 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/ZAC012301163.
Seduce Me (feat. Nkosazana Daughter & Happy JazzMan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x495da5e11c7f67b6b5aa61e5e3807d77ecee5ec1318bd15d41a1cf6ce8885dc6. 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/ZB1OS2300204.
Mnike (feat. Visca, Murumba Pitch, Happy JazzMan & Mzizi)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b784687ebc3626b63c2fc0b23960465a170cbc920ec754dcced5a8a5e0a77f. 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/ZB1OS2300207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1bfb0749135f70a77eefb43edfcad7cc5f94dfaf391fc5fb8c361ab54a738b7. 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/ZAUM72400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e379fd0290fe572cd5e37893a4807c7fd9c542d4b26768e94e88429bdd55ed. 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/ZAUM72400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3df5d7d8ed5d14d33f54091723de94f193e0b27ee4ff815ac3282fe427e518e. 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/ZAUM72400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87d6e6f20eddf6ddc76d1650aff8b68eaade9f629a5e015402ec164171d2664. 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/ZBRAD2400127.
One Of Those Days (feat. HappyJazzman, PhemeloSaxer, Faith Strings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c7cc32dfb528ee17d1ad231b22b38f258e90bf5514a20c701b841811750249. 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/ZA56E2304071.
Lerato La Pelo Yaka (feat. Phemelo Saxer, Happy Jazzman, Faith Strings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07570c2b3d88e06d3b93485417840ada1c9df743fa4acd731095dee417cf734c. 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/ZA56E2304075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dee19e1d0078d911c0a04abd8e56b11588832a670442d538852ae7b242c1010. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/ZA56E2304076.
Ngifuna Wena (feat. Notha, Happy Jazzman)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5ebed75d67dce167cd9912f29bad42a2084bc2806540a2e476c3dba46dce0f. 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/ZA56E2304078.
8 Miles Away (feat. Happy Jazzman, Phemelo Saxer, Faith Strings)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a5456af466f5e8d3ac5b840daa0fe1a54a30cc1545dd7e271751e892863c29. 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/ZA56E2304079.
Ama pentshisi (feat. Aymos & Happy JazzMan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6810a576bb92e4d29b17276a2da9ef1c87f085af34ce370fd4f0a6487ec1d6. 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/ZBIJU2200002.
Inhloso (feat. Murumba Pitch & Happy JazzMan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d209a67573f4fe5e4c17a19ad6803d2a9a8f60c953947fbe5064b8caad27df. 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/ZAK282200007.