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 0x4d2084f10e461edbb2ab6045e652a5649ae342a956dba58f3bbe5fa54c47de30. 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/0f4684f3-3e0c-4999-a4ac-869a5068f75e.json and https://artists.proofprofile.net/proofs/artist/0f4684f3-3e0c-4999-a4ac-869a5068f75e.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 0x0e5000360c36932efd0af76995b5c25f018e907dff55fde060cf79adc71f880a. 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/ZA6EE2000034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a8db5c6833e2de029799aa6c6d792196afff0c34602d18dbff60a4bab26b79. 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/ZA6EE2000065.
Unathi Dlozi Lami (feat. Mlindo The Vocalist)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8685922edf259c7ebec8cf49c39acb187ef342930fad78f0acb51670088efa54. 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/ZBC8L2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f49d35077fd1b4a209f47662988d6fe9a99c2ee381e9d0b65e6b2cae9f83ae0. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/ZBC8L2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0975e485420ee54ff415e04e341e712fc6ee109dc32ae11ea86b782bd37bb5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ZBC8L2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe916e904ee23e2e0df9f3c29549d65a460e889d21d75c11359e3ff048ed6a42. 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/USA2P2557160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf0fcd5d5c394c9811bc1e38b3596d5e00c9180e37ce57ced89573817a1c7dc. 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/USUYG1541176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6c96316ace291adef43417c4d3e99cf9d625b03e7f2ea7aa60d4e2e3a638168. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ZA6EE2000046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79a94653b5ad3288bbfa7d2b5bd4e96a8de4a733686d7c64d51344ff3680adb. 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/ZA6EE2000175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01678f8d835928c2df8adc81835c474ed6a2a55fed62e4df46ce77c845e25255. 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/ZA6EE2000188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4a83d5343d630590b63a7011433745e8edc2c1cf43f33f524b8b01638165d1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/DEY472279460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a740626d9f11e0d7566eb042173cc773e11e6c3ccaa54b1cf7d1d31be21e9a7. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ZA6EE2000066.
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 0xb0fddb5a3b7ac51a1be1984a602ca1761f452ba384cc4bb2b5781a825861b2d8. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/ZAUM72101415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3190a17b3dbae9c4fab981b36ddfbbbe62f24a9bdc72a625ca8c855dc5e81cc8. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ZA6EE2000049.
Intro (feat. Zwayetoven, Senzo Afrika, Bassie, Chley, Leandra.Vert)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6949a654378b11976f68d0a6c75af72b6f63830601c13b0b2ebdf3caba939485. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/ZA56E2304238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092594571aa0d1737966e62327b43719e2eac8efcecf74a019daf2b1e1610846. Chain 2 (Bitcoin): anchored in block 960200 (2026-07-30T02:37:10Z), 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/ZAVPA2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a451707e292e2673c5fa2790d1fda375bb8bb0b0faf5fcd585472cac9b1a26. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/ZAVPA2000016.