1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xa0ccb9ebcacda95589eaf8562282732e7102ca49964b66a8a707b6cc68dc5d06. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee1c586b-8046-4ae7-9fdc-83fd2cd8b43e.json and https://artists.proofprofile.net/proofs/artist/ee1c586b-8046-4ae7-9fdc-83fd2cd8b43e.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 → block OTSBitcoinBlock must exist at that height 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 0x93c08173f36dd6da42afa1cc6ef534054c91d8f1b4119aa4a7a7aea16ff1ea17. 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/QZTAW2308367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecdf70cee9ef52ecbafb98ab9669fe4f29e625d348425e5c6adf72e250db7121. 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/QZTAW2308368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3245d76ed20dc2481dfde39a6c503f5c1c9ee355fe161146af394bf8e55a5000. 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/QZTAW2308369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97da477d326deb9643dd03a24eeb9c32c2cafc5407d5599cfd9c9817af686257. 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/QZTAW2308371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85311f772e4fe63389108d15f17f80a03bda732533b203aeca2aea5f313572f9. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTAW2308372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc35722d4f2a0d7bf5d214e85e22ae36bc343faefd99621a8ba7361e8c49d292c. 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/QZTAW2308373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387023eb4df5b219ef65852e29c289cf0759db3c392d34d2593fcf05c758ce67. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZTAW2308374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d7172fdc20e80f1f23097b79e9c7b589a8bfeaab3dbd6a8e5269f4fc86a45b. 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/QZTAW2307170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb26e05769f8e0b3c80b3c3e2f505baaf3c07aedfd59fbbe2c2cdb84de1947760. 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/QZTAW2307171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ef97b10e31ed042569ac258aed957e0b7acac8d6fbfb8829db2f3d760b3f702. 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/QZTAW2307172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4215805d7687f7fb63f8f6c505a541fe403b8869b392a5522fb31d70159dd9b. 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/QZTAW2307175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5031d8f21f52949b9d49b2b8229b1129bfa0f85f0323ae6fa16e3c52112dff37. 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/QZTAW2307177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f2cfdc12260d8a3bb9fe3d942e6f755daabe6501c225dbff9323ddbb5e2ec5. 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/QZTAW2307180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdc11f07f69d3543e2a05e12eeef2dc66fdeec909b13c9ecc85d2663b4780c3e. 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/QZTAW2307164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d34c5603745a65d9546c7bb2a8f28bda950fbeecaae4e43b815fb438075c3f. 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/QZTAW2307169.