1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xcf539886398d423eda4fccd5343a5e9930a13c1368ba75e2a3859540a4ddabfb. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e2659f3b-431f-4d0c-88b6-0c8a50ee5aca.json and https://artists.proofprofile.net/proofs/artist/e2659f3b-431f-4d0c-88b6-0c8a50ee5aca.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 → block OTSBitcoinBlock must exist at that height 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 0x8777266b3dff1a9a7929d1863a617c799e69fd39ef83ef8ce23f7311573b3950. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:31Z), 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/SE4932100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f96e27b4665b9692a7785f34757eccc61fce565b1a3241b8150256e14128fbb. 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/SE4932100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a07a935048ba7e1ac067e0e2acaacc4a95149c0cf46c96aa500fefe8298679b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:08:55Z), 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/SE4932100103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289d12a98614ab566354387568c88699ef06b8c686d80d9e73eaee506cfa4bdb. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:25:05Z), 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/SE4932100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaf6df4b774f46df4d5eaa43af80855320bafe597283611ce0a32cd22373fe65. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/SE4932100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01d70417d91020aadde49279323150a79438237e00aa0545256c5610765ace7. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE4932100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe036e1303b8d33dd91ec9e05081477ea70e4ea8474227b7840b60dd64417978f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SE4932100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855195decbd27485ba938c759a6213af2b0f24c7290b1b58656a4afad2b13c4c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/SE4932100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5262196f25aa2197f7a6cd930525fc2e93b8e7c2cae946ea60f5637133243ada. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:34Z), 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/SE4932100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38b4e5c12ad11956f36499f61f663371b21cc0047ca8cfeec63f7fd25694a1a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/SE4932100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20da55b79eb908a55f1787e4fd34830fbe575e74b7d1610d77f0dbf7bbbd83e9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE4932100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f76b68c9eb0c9b7c0b369ba22af9684f6a98dbe3436050e1faf346c98aab18. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:38:33Z), 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/SE4932100113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7334511cefab6c67b5850913c418c00a8ca4e3c542333924eb1cd1df251b694a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SE4932100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fcfbe4630c6de2c5500a1018dfcd905f07fc2f2c982cd61eed0b2dedaff1847. Chain 2 (Bitcoin): anchored in block 957714 (2026-07-12T14:35:57Z), 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/SE4932300102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x937df90cd07f6a5fc32e40133dc0cc82bac128178ab7ea15848fa0ebda3af98e. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/SE4932300104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa16d6537411d9e198a38f753e481eeafaefb848ab68be701f799b4fe168be445. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SE4932300108.