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 0xe7c13eb4b9cfa04a27ffb0f1d2e259fafb7c01804c1944b8ce5985ff236c1fee. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5d42635d-a600-49b0-b41d-d78eb61ebaf4.json and https://artists.proofprofile.net/proofs/artist/5d42635d-a600-49b0-b41d-d78eb61ebaf4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Choose Your System (Adam Beyer's "Choose Your Local Warehouse" Remix)
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 0xbd6412b43b4de5baf94e29d66296adad7e72ff9424517ed51c3dc331f81371c9. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DEQ201100501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bc8ce5aa061e9cb532db62a686a4b8d3788dc391002ea936b835a9051faddd. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:53:19Z), 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/DEQ201100553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc452b03e1e53725e04b425c3b65daf7e1feed8fe15b2a72719abd877c6a4f71. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:05:04Z), 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/DEQ201200751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06aa582efbdc74b287155945c8bc48aa79eca6ceb828b3d8b81040027f3b6f6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/GB7M21206001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0907590fd7b4be93f61a76d67021f312aef737725af62b4adf17be944fcfd7de. Chain 2 (Bitcoin): anchored in block 958369 (2026-07-17T08:02:37Z), 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/GBJX32116001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b16ad6867d531b05ab990b90fe9ec0b48f3cfb35b3d1b4a687feac64e50218. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/GBJX32116002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0efc68b34ef1074fcfc2d55f8a7edfcef7c829883d6682187c8c9119eb6bba. 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/DEG931300361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4aa4225774665cee48ea92588d1f2e273f7806a57213f367bd2808648ca035a. 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/DEG931300362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60083f29a41782ce85de79bf2919d3a6c82780140cff7b2a2632489ac42a22bd. 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/GBYNV1100286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd762c7bf7895a6b0d646cc8fb0b9014601796ba69c638ec8853d8bd6e5f17851. 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/GBEPM1000343.