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 0x9a900d8ab8d2d38edddbc180e2561774e88f35b3a095986ce96ff8f9cec69210. Chain 2 (Bitcoin): anchored in block 953701 (2026-06-14T22:16:40Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/768f567d-d1ac-4598-81bf-835795e6534d.json and https://artists.proofprofile.net/proofs/artist/768f567d-d1ac-4598-81bf-835795e6534d.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 0x4ac1a79ee8815580e0cc1a6b955986bae709a15190efb73ce9d1769323977db5. 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/GBNUQ2000535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad91357e82ebec45c915fb6d8e6cb1d330c56bcc473932fbbba76e790d796e8. 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/GBNUQ1100449.
Esa Nena Quiere - Francisco Allendes & Aldo Cadiz Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3184201f26e15640e3f49eb283cc1a8a7876d360769bc4705c4c4945386ee9b8. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/GBNUQ2000534.
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
Klakongo EP (Incl. The Deepshakerz rework)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6b1f19b73303bf90c5f46cf565277e830a09575958577e8118403ab4aaf56d. 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/QM4TW2456133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fb76445e2b369887935033a108f45a08eb0bb1556be66c5450c26c6fc0fa56. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/QM4TW2456135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca6d3c6d6f64437c3eb542c4a85ff8e92f296a8425a1d8e5c2f337851bf1ab74. 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/UKU932231331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1a1d7120f121e45059349cbb5a441f9d4ac9ed796e4e39dfd22c4fd5edbab1. 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/GBKQU2178058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812a21c180c1143926cbc2af5b108c920d6256656c9dc21e4faf6b21eca742ee. 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/GBKQU2178059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19172867af1fae66c0d7ebd6ea3c2fd325a7f887a333266d20d3f7df4ae0a4f7. 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/GBKQU2178061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfebdc596d1e0a8ecbb77c4fe0753b0a3c864dd9d2401281c78f0fec5af30963. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBKQU2178060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6599beab6f47f1f4c6229dff94fe708d406e4c7edc9a2dd525565a9d161128d. 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/DEX042000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc063d91e793b1e34631b3cc5d6433668eb55072117f097cebf407f7cf9ea9e91. 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/DEH741920021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2150fde3fcfbba5ee4b05f517d94075fd156edf6c976f42435f152d233363983. 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/DEH742510441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b7ba801a7d00d410d60cbef74794c7f6a34760d92f0c29683c5c65095f7200. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/DEH741909944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ad5e71eb51ae10f90b6669cd03e124d680649e7afcc20969b310b5095a2bc03. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEH742011174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308e6dc7fb3dfe214c7a2ce90135d8c5072b4ec83bc7c66c478bcfd6fd8c5313. 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/QZG2X2417455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1434c12c88f975a2081842969971aae0f42eeb53ee166513f96cb21482e07730. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:31:36Z), 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/QZG2X2417454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cfcaf94aa82fc8feb40766e3c8bd33fd73a9c1227b56958cfc38e5b647e0ec. 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/DEH742508949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cced38f8c1f6a5b9a14530f0274e144f081698e5168ca13a7804f2595c0421b. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/DEH742508950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d27e3aff5c96a3f9dcdd07c88a37105484e8d82a28680e2885c9b8d8f314e44. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/US83Z2512307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc437dd0764a37fab955ab2dc72767982f73da95391ba1391ee54bffa24d61455. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/US83Z2512305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fd2745ab4b417b7ba0bca8fa74e4707181a37fb39eeade32d95a19a26dade1. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/US83Z2512306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63fc9324c0cb8f483b70829ea1bdfd8ff9e70f220143fe36570882f90c5c156. 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/USZ9A2579201.