right|thumb|Abby DeWald in 2007 right|thumb|Amanda Barrett in 2007 The Ditty Bops were an American band from Los Angeles, California, under label WMG, and later self-produced. Noted for the tight voca
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 0xa69b9bfc8a2e15c52438a723c8b5dcd0cd4d19eafc9b945599032df2a9f99eee. 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/24a95e42-4c94-49e2-9ced-d04910e8641d.json and https://artists.proofprofile.net/proofs/artist/24a95e42-4c94-49e2-9ced-d04910e8641d.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 0x82f6760e8e3c4e3fc69c81b65e18240d486721c87e2b8103ffe3c4d80be3e149. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/USWB10400341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7d7c0fe6736b3d250cc6608ad9eb84eebb55488bd6f2a214bdc1dc660f5465. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/USWB10400343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa08f81d70834b710b403be0440529a8324efe8e6c63d9cc562e538d84aa765d5. 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/USWB10601362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c20f9236c4b828ec9fd42e3bd0313f278acc7849a757c20dd9ea0b43a38c49. 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/USWB10601568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3627e3c24a1e6ed1268eb5db81a1799d5fc2e467b89912f67371f43c10acb91. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:22:47Z), 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/USWB10601574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ef9fd4e3ffdee7e3d4be454c907c070bf80e2e6a12dded6e6f865113f51679. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USL4R0772471.