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 0x4d38e52994cb412420151ac56fd25fc6d21fdce4b0b30b42814ef32fd4e75b24. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fc41cb74-41cc-4e1d-8343-03838fa1f907.json and https://artists.proofprofile.net/proofs/artist/fc41cb74-41cc-4e1d-8343-03838fa1f907.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Bedtime Sh'ma: Songs for a Good Night (feat. Benjamin Dreyfus)
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 0x1dd2bd6370a36a8c6e5cb63e0b7bd415b1dc8908fd9ac3a6f21776a64111933e. 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/USHM81299555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2b7fca418372c2ad9b0d9ae8fcf6ce0e062a48e6108b81ff6ea788dabe9b10e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM81299556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadc49d88c3db6436b8c163f51d50134d94530c7347839a445a562945b6549c8d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USHM81299557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bfd090e1ffb0693945272066d9b1d58373bca6d94533a3743b1e4d05ff7dd9. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:30:07Z), 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/USHM81299558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x731a48bc001acba1a9f964fb9194d3b09fcc9845d9efb0f08161db0e3405e16d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USHM81299559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b619ffde9e805ef7ae1c25a12446b133aa92be7c22727f0986090b9a5718cc. 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/USHM81299561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x106629244e406ff58ce6ddd2719d8f46234e1bb8def32d08d6a5a53f1079e7ec. 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/USHM81299562.