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 0xe9dc3830dc5609aa1d5ffe981b8138a97aae53d9a560dfb1c2147c178fb323e0. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/87e4d4ca-983d-4da1-83d8-932398d597d3.json and https://artists.proofprofile.net/proofs/artist/87e4d4ca-983d-4da1-83d8-932398d597d3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Never Let Go of Me (Bravo Six, Going Dark)
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 0xf869e9f1d79462393abb3f7f6f4088f02795eb8dedf415b99324a18e74a13419. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/UKZGC2403313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb9afdf50e1cec41b2108e0940ca542029f0445a59ae7d6fd1c3c56b18040d68. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/CA5KR2472673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fe9d5b1400d485f01ab3c51c513f426b4a98accc95915c8fa1916e1e318964. 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/CA5KR2472674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c036fc513d95d307b93bb518530a5a32332ea0d9094e4e6ddcf44644e7bdcb1. 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/CA5KR2472675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf79dd6f0201f731032f67a204912bb071cc58d20c563f0f0f5a0bbb6bb2eeb74. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DGA082462291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d73eeddafe9c6e897a9aef9f12784003be2f735e368c7b941e638804df9af3. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DGA082462292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafb05af52d2eec2a86e24dce41020a9357b6ddd638b4936ff3a8d74b6fb83dc2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CA5KR2497408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4082ec943ff4b4544cb86628b7126341ac01e3738b52ae67f898b3f820cf9b98. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:52:10Z), 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/CA5KR2497410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5b2beac8237a5c6fd072053711e552e489581304e04367533cfb03fb679196. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/FR2X42527512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x786fc257d5d34a5db54f926dcf748ce53a0864cb1161189f407464b002117282. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/FR59R2590426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54160fb34d472c4e5d109eadb2846afaafd003d19a18e363a2ddc720db0c69ec. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QT4K52560944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb0d7d364ef193d4b3347e9b9d5929ce7746075bf8ff69668047edd2654bd2. 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/GB8KE2325388.