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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67dda0d38a7431b1bf6a338701dbf46ae792319dd39a2b9e7e614a2216ee083. Chain 2 (Bitcoin): anchored in block 954549 (2026-06-20T10:56:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa230076-a53e-43e4-9136-989dc0fa92ae.json and https://artists.proofprofile.net/proofs/artist/aa230076-a53e-43e4-9136-989dc0fa92ae.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc493dfb40229f48a979e3dfc5dd0e7a92cbf82ef2a854753a21901d7e36279a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM20514273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a03b43af3819057054e0b2d7637aa39afe72dca896f02b52ce277a915c8816. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USHM20514274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f7fbfe9c5f0b624a7b24c3ec209340602798ba82c6677d919eb7c49915cc56. 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/USHM20514276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb60dfbe979d893a57d87281964b156bc9f50464bcec8e7826cd61b19e69e27d. 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/USHM20514277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a41f8d899006d7427ff5f9cf39d5a0a9d960c69c97d8f59655918bd65c40ab3. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM20514278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30d7410b4fbc818ca5cbd21224632fd5ceda91396e51c0fffc2bfd8888e5fb91. 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/USHM20514279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c72718ff1bfb7f4ec35b1f691583d4c9c323d61c2a90541aaf4a8d0ba65498. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/USHM20514280.
Reflection Of God's Goodness/Great Is Thy Faithfulness
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb608fb97cbe1ebf11dc024dcfd82e9ce57d9bfba06daf208595bb0a03b467ee. 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/USHM20514281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b534270c6c4b81e4d338e7e963d1819f6352aa36bb499d3a74aa8d075dbd933. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USHM20514282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a04da79e519255940d52402be9503b60931ede346ecaa907ddc6f57d5011b7c. 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/USHM20514283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595e31627e9c16679eaf5d8cc83a58d7223220ecb07abf7fd2873d5825f01d28. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM20514284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750ee1558f50b73f3743f6be00a9b922db8809392fa6e2bde7dc50c0fcc0f31d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USHM20514285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d938bfe07d37ff7d16cc3b98bbb13a576e7aea3d4956337c22f9b82ca4c975. 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/USHM20514286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd992feeb08808f189df73db4af553e409a0c1d490c7d42a43606a82fa4ddd2c6. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/USHM20514287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e87594fcae1ce067eec05212a801454a7a55bd4cbfb150a05f4ae19904a0d0. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USHM20514288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b77f03c6790c56b94a0f2fda4b5bd0b0eab7532512b91e4aa31c798cde98ed3. 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/USHM20514289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdb3c94f17f9d83607718c6d762888507246490aebd00409b6203fd498261238. 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/USHM20514290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b344f320b8a0e41803f981d35fa1de7bf49fe50adc95e8136697d2a5fc26ef4. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USHM82053540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8429cb564b6d21be4bbdaa8a7404ac269a2f94b996f6337c0b46df470ab59d3b. 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/USHM82053547.