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 0x0466e0b6429115adc3525f23d69dcac0d47988eaeecfdc824ca5caa39d5bd159. 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/f8478277-dafa-4f9b-835d-ea9696ab87d3.json and https://artists.proofprofile.net/proofs/artist/f8478277-dafa-4f9b-835d-ea9696ab87d3.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 0x2047233d585ae33453b044dae39a7266877a9141b7e93b46f23d902f4ce2c90d. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/GBRKQ2459438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53448dbeea2165c36f4cbb34ef811956295b5f13163a817144d6b2c09545b9ee. 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/QZWV32356053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5171a351145457ff3031b955cdd17088efca42efff9eb230358281506a215c56. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USLZJ2392395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d219633f35de8c8b4590087835088de0538b6040376e356fbb15d6d54e64bd6. 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/CA5KR2365313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225dff73f5458a9f00c4479f81a8bedd58c2f53fb0467aeb7cb24589ea0103b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBWUL2134408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb041576f03a0cdd1447666c211a167219786cffba69eeeff0c247cd0455b98ca. 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/QZK6Q2187983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x474cd1e8765888dcf294f57bcee324975e7a0cf535f01d1f1e144b2c881f018e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBRKQ2038431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa959f4443d68871fd4262c133794014d6ab864bc9c9b47b6c0826103a6f0557. 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/USLZJ2085308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa05660b9dec1a4bb8b69b45466bef2b2fb4e27d5b1a5267a37e01e533b47d66. 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/GBWUL2030626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dcaa198cad1d82fac6e08d3dda8c4c606e871c5b323af501183c3b24ac28dcc. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GBWUL2038591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d7bdab31dc958a5040931d9313da368bb224b68da07152619707ef68be4043d. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBWUL2038592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075debd265074a20255f720b27b33aa005d1eb6b6b0e9c171bb1e3707d5fc41a. 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/QM42K2029609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc648a5183e574df56c6ca5b7a14d081e9de079596309adde4f58786b52fe8b06. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/QZK6P1976058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83dfb85c69b76c38afa18a516cc5d18dc5394b464338e7e36798f8d9de87aad0. 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/GBWUL1910093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14d026ed7bf0dd83b2cb2061e276a4b9ce9a2e4a8d9b12bffcaf9ffcb15eb33d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZHNB1995669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2047233d585ae33453b044dae39a7266877a9141b7e93b46f23d902f4ce2c90d. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBRKQ2459438.
The Storm You Can't Contain (Deluxe Edition)