sed (short for stream editor) is a utility that transforms text via a script written in a relatively simple and compact programming language. It was developed from 1973 to 1974 by Lee E. McMahon of Be
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 0x8fb37ce0bc74fe41b6b450bf4dd1e83b5c78e2ceb365e42aa761629edb2a582f. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/59034463-a427-4073-8a8f-e822201217f2.json and https://artists.proofprofile.net/proofs/artist/59034463-a427-4073-8a8f-e822201217f2.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 0x7e323a459d8b1f92eaa61a3eaf35c1e2f14c5ae8d0f6287133a15bd74a390526. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZES52563263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fc838f45a71fdba8e538940038f39e2fcca8b4c20abedb5a432c3d8c4eb3d7e. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZES82593303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e323a459d8b1f92eaa61a3eaf35c1e2f14c5ae8d0f6287133a15bd74a390526. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZES52563263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be89bd2783d4f9eda055fe730a140dee081d5e8421c0a5fbe388e9a0532490a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZES82593304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c4650710c0a02c4e7d9035c39b6e7e245b156440bea85bd00b61d6f3493df9. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:53Z), 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/QZES82593306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcece7d240006cf7aa8a7c29a01454ccb3981f1b3b44845ba1ce2e0dd33d0de8a. 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/QZES82593307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee03d9d0467cd2328f5956c6d2e1693d375f498f4d2cd9999a87ba379f17611. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZES82593308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb339e6c412f02b899073cdf8d7a3d9f8c48ca311bc46d00ff3285a85868c74d2. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX202572200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f20867e2779a7762f105f1ed50bb131e6daacf1c6a703e33d555ebc11ac7107. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/FRX872541556.