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 0x3ac252762e16ce6069b2a9314f5c0b3d0893ff35a714bdd83210dfc885690da2. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a4141044-1387-470f-bf26-2d2be8d59dc9.json and https://artists.proofprofile.net/proofs/artist/a4141044-1387-470f-bf26-2d2be8d59dc9.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 0x69f2357436f5efff1404536b5b0249dd4dd272e94296dc99025597753f683db6. 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/SE6A92351008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b3bb69c014e8f0c82b57e67a6369a68ca4837294899787403233c55c588154. 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/SE66N2301673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe016ac1543569353d3379d623c5b4c290038802f10373445373e27e775988a72. 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/SE66N2310788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b4b7d0f54aab992b309d5f13af73088f1aeaf14650e9642f0f4fd3ff0969dc. 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/SE62M2338413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5beb7ce3e6e48e7715add78c30c15f077423d0bb9571dcb115ff9744ac68523f. 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/SE66N2372016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f7e4572d757524b5136c8c6803619bd49b6cbdc017e92e9c099147db6ff4bc. 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/SE6XX2325990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cf36918a838ff9e4b4bdd45373f468eba2884fc6c5b0bf715619a6436f25a7. 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/SE6XX2367488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586460245d8ed176b571956a128025789f44d1912fad0396b17af14f2b78dcb1. 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/SE62M2312149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf08532751e27233b56c770ecd8692edaf1410df2d2fdbf6560be924755c359c. 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/SE6XY2362727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53ed751aaf334d71208b3dca4bbaf4971a8b76795a4041f1c2cb126bdfd51691. 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/SE6XX2347657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79fe1700826d2315769902ebaa89cffb7c66400566ecaa2bcf4ea2fc6e4ed49f. 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/SE62M2329175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0893c5fd6f5833a9b1cc2e3eaa54344feb238633fba53fabed2d5fcde29cf86. 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/QZTAW2479875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbb9475a5cef90fec374099e29834ee17e1d2fc6ed1f78fae18b553757718af5. 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/QZTAW2479877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03716d07780be5be99415ebe958fd1005e63df49f53eda85b56abfdc7c1ff67c. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZTAW2479878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81567770c5c118873b94137fd5051981a9de0168e100b18219f6810d82935c39. 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/QZTAW2479879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f21507aba8bd05a92a46499fb8d1afbf5fbee725ee642e731f626d69feb662. 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/QZTAW2479880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9313688f607c6280fed7e66a33c8d63e09be648d7cb2647dac24eaefa087ed. 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/QZTAW2479881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b2fa2877b95033039a5c2850dfce3d4c9be421bfc93fcd6d7b570176f9bc74. 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/QZTAW2479876.
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
Angisho’vele (feat. DJ Njabsta, Novatron, Cowboii & Carter IV)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ab322f581736798fd1bf6be59e4805ed4806734c4fc8e50915104dab7d601d7. 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/ZA56E2527088.
Sibalande (feat. Mr Nation Thingz, Mellow & Sleazy & Makhekhe Jr)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xead6df6c3e07a95e5d141a85cea7ad13140bbb0cc2ac30cd678d292843fcdaf3. 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/ZA56E2527089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ef4d142971fe0763e30ddfbfc474748627c69ab469824b8154111433ec0732. 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/ZA56E2419838.
Batla le mathata (feat. Rasca D'djy & Cowboii)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8cfd128e5d1a4c24d552bb686e658a7925a41b249a5cab132d0b1798ac3fe91. 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/ZA56E2527090.
Amaguni (feat. Scott Maphuma, Carter IV & Novatron)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84ba48249ffe8befc8f4bfccb95c781e527d392be9a70b51595802ce4524647. 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/ZA56E2527091.
Ka 2 ko pitori (feat. Thatohatsi, Tracy, Teekaymoumakwe, Terra Fontain & Major Trigger)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cee5dbc6ea16df64a64a1d9cc54519efa16f36cbaff14d43f17abca47d780a. 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/ZA56E2527092.
Thapelo (feat. Stady K, Thatohatsi, Rasca D'djy & Debow Taliana)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7ac8a81d76be6fa1e918959394422b0e62bf829a7fdce361422dbb9dbdeefa7. 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/ZA56E2527093.
Sgidongo dance (feat. ShaunMusiq & Ftears, DJ Njabsta & Stady K)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe046df560651e9310beed399a50e50df6a275b4f8cd6a1d2c73f8f861a134125. 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/ZA56E2527094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6195b521222cefe4fe336842e5300437d39c0f336313ad54ea2d9db68ccb13e7. 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/GXF9Q2414287.