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 0xa28da732679da9e423e911608da8fbeef727f7d4654929f0206c862b4a3310d1. 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/5f769fd9-b11d-4baa-a75a-36740ca364be.json and https://artists.proofprofile.net/proofs/artist/5f769fd9-b11d-4baa-a75a-36740ca364be.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 0x37923691fc7b3a3f5443bd15931528d51e6ee44ece096ec53a6c00422b3ef164. 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/QZNWS2358372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d712cc0a6b1f288dd86996b6ceaff2f51b830c1de0a53d3167a638efc063bb6. 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/QZNWS2358378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99eb3288d86e7205dd32a3249c574ac300623e61c6542a4be2846406c668ce2a. 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/QZWFK2438382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150a6ce1f9d0a303322c9ccf7cc3e65fd3e95f8f5872c295cccfe41545ee5eba. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZWFF2434029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db305cc09e711d81d625e242eddb8ba484a70b0fe5a7f3b0152d9a25cc35373. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNWY2443469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bd96f93f1340573e5570368c7bf3d1a8b782ff62e1eec1f1c0ae47f6d27057. 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/QZNWW2462430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e865b02166abbccc607a07ff2fc4e822eb8018fffa16a7a65df3bf5d3d0f68. 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/QZNWS2454388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x615092ac0e34d3b1db130c755252990ea3a4445cb8c1706b1749ea3a9a59a576. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6N2452476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73933d3ba2a3abfbf16402204f38b77c89f06066088cd5cdc7ccecb0c0e9b3df. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZK6Q2419490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28c311e7846fa0f70a84092dc7cf8db3ee08e4451f43fecb8014343cbe048873. 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/QZDA82427111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda25a5813080c5694ffd9193073a3ad39a9f8fcc763977e4fafb72f13fd1580f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZTB82368645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x001784368ae53addc48f8f681301b8980b80900cd0bc15b0c6ace69f52ea2ac0. 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/QZTAW2301347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d6f68a772567102d574b56f373c475ed7c4f1951f410d6532d176aba0ffdb0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZK6J2317275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaa0d931a9534b3d7abf5a0432054007d1a61750919d3632c84627cb58528881. 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/QZK6N2370014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194f99087ad1c7348bbb0ce4e09fdf002142a43ad07f6fcafc9018ace7bddae2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZHN32399779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cde3fb06c2a7cbde4292e967bd3ae541b1f7b927870a30b872a3ea20d2a536a. 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/QZFZ42342227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23839f8f8d24afc8ebcfa0f566f5f9beaae2239885d6cfa6332246291bbb2e7d. 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/QZMEP2254308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5f64fea019fc88a25df0b8c5a72e611c3c3eeb2cd63afbe3f5fde26a3ffe0f. 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/QZTAU2389665.