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 0x64b3a6fb182b0d28f43898f3f48c022c19be428b2daf67513a61bcfb42d8dde8. Chain 2 (Bitcoin): anchored in block 954342 (2026-06-19T03:22:39Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/91bc99f2-47f9-4a21-8444-5ec5b05bb54c.json and https://artists.proofprofile.net/proofs/artist/91bc99f2-47f9-4a21-8444-5ec5b05bb54c.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 0x1adaa4f040973d70864c96722199e81d973284997b91aa3e6e643557930b0e9a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZQGV2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92463703b4d3961e0d19f55ff01b93d23a7b5df58e7ef638574dc9c61bc1b2a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZQGV2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579c777149c989c32b1fd85a5b5567afbb3f07d0a62c0038f9b3b8c051854936. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZQGV2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7052f61d83957fb462a598bafeec1a1d5cdd920d89f64b92cb7e62e95714e7. 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/QZQGV2100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956ac2af048ce3f5dfe357efbbeec1ff681a233cf95480b737e62723f1e6792b. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZQGV2100013.
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
Je voudrois bien, ô Cloris (Arr. for Voice and Chamber Ensemble by Rebecca Scout Nelson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9722baa4da6ff283bea29671793d05b86103879cedeb891ba22876ca26d22ca. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QZQGV2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550617c6b62a838bd8547c8e4401cea84c70ad65e2106ab3c92af486f42b9cb9. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/QZQGV2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaf14e57bb001fcd3767924229f5ac6e07b4708c8104391b3dd02d520d5de2f. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZQGV2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0918bb8447104f31fe2ea4b225e91b79d1ebaf83dd786f922dfc8788ae91c394. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZQGV2100023.
How Blest Are Shepherds (Arr. for Voice and Chamber Ensemble by Rebecca Scout Nelson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x217eb08afa23554a4dba31eddfcedb49022d21c8637c403ed2b42f6b541e9a5b. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/QZQGV2100024.
Gli ochi toi m'accese'l core (Arr. for Voice and Chamber Ensemble by Rebecca Scout Nelson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90fe32a2991d7dbb955f54d9cbfd5ae9bc7cb68ce6ec0402a109ffe56efb9dd. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QZQGV2100027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d73113922f47c34491807bb1dda74c88191ea951d03f24f8ce7841a128e633. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/QZQGV2100028.