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 0xc76f59bee4a3a60c4806a6ca82f10e4e4b12ce525a70931579f4a42ddd880ac7. 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/f485bebe-f95f-46da-b199-7ffae9282463.json and https://artists.proofprofile.net/proofs/artist/f485bebe-f95f-46da-b199-7ffae9282463.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 0x4a4c0da880e7fb25c8ba4d349f5cbb338891560037f4345c0eb6ed3aa4b84d26. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/MXF068600460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3489a9faa88c1fdbc5d1d6039950f6606c3a3b7be0b31c2564b590845799ddd. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:34:18Z), 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/MXF068600462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b7a88408090faf72d848bd38c9250b112ea3ea2b7028ad82639af9b737bdef. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/MXF068600466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4545f68b61039dd5aea81fe550e5f5f7100fd54a44d07f129c986cef701cb614. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/MXF068600616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6799e3f0201f8ee0fa6cf526bb5dda5deaea02ce54b1c53aac35e654c5a65f90. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/MXF068600463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9733652e87477a96cba0edd86a7aa8ecf45609780ccb9bd8f92c3f7ceaa7fd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/MXF068600465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd273d03e706da81f36d9e619f6c400b9f1df092eba8cbebdb2967a3378d5eb3a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/MXF068900188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf4a993fe8e9893c2a5a2ca036ec285f8472e35cba2f3a0de00b59711cd8c37c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:54:43Z), 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/USPWN1301453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2428387506a848e02330239fed0f8f5f562ac280296eacbfc4a70685f8aaafe8. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:26:43Z), 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/QZDQH1802578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe830a8577c3edbbdcd83f70a952fce2994df2bc484c5f84397dd0321e7c296cb. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T20:11:06Z), 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/QZDQH1802579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62094cd5d40bed298982b0de1b6cc877101e41fb6af4ddf96229dbd98cacf314. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZDQH1802581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3d538ba99d74bde8f8a554c2822f5b5f6268cd9b6cd28bfe7b7a9024e94e18. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZDQH1802583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7157afab7de84c93c3a2bcd5cd5567e5d2e24066b88a21c6415fca0e5cdbc9. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:11:01Z), 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/QZDQH1802585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9edaa51c49c167be95e2f52a7c7eda04c800b655f6246387041804927a1490. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZDQH1804226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f822df3455e737927029aab7428272077459e1d61fd4170821ce9e3811a732. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:05:59Z), 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/QZDQH1804232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47dcef27158c49bfabaa85a4793a829f5f53b0a83f44b43fdc876eb4108dfe12. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:07:49Z), 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/QZDQH2303886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x293d9674e50daf2e5bb999f00b143150c01050162aaa26a7fc32eeec01660644. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:34:20Z), 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/QZDQH2303891.