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 0xc5640d31b1e8315e5dd44c50c5a66564f3aa422f535b7a0bf1e88f2bcda56280. 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/3967db9b-e059-4a06-99a1-4864ca627c42.json and https://artists.proofprofile.net/proofs/artist/3967db9b-e059-4a06-99a1-4864ca627c42.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17350bb4d6971b83761695d26b77a24cfaf3bffb0ea532430c2fa6084849878b. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/SEYOK1127484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a7c87ac1cbf686e083d7afb32261e591e1c70cbabd9369df23b74572774ba6. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/SEYOK1127488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeee3301cf49f5ea4fd33b4bd96ccbc2c62a67cee5b34574db6fe0f2f2593712. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SEYOK1127489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a15eb00652bea50dd939755208ac1fbf74a6b45f48998048bbd9ade02c392e. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/SEYOK1127498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x704e85e1b3c076498d7ff2a86e31c3cabd571492a3dfccb5eb654e23879291ec. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/SEYOK1127470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c93f8488495d7003d42b047c29d0a929f2abbb15a2b29c5d89ab526d594b7ea. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SEYOK1127473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4251bd9b5ae012ad95d70e46f83f5427039ab98466844ded2a02aca1e4a7436e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/SEYOK1127475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe05fadb415ea7fd1bea642b5233b708a7c8a502fb65fe4a49cb76c1df1a23d0b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/SEYOK1214047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfe261a492c650212f235c164a4231b5cd37071278ff0c072d94f85aa6ba8e2. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SEYOK1223487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce3efbe3c5fff1db4c8886a9e1fa679848db10dfbd00c22edf2680177fc576f6. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/SEYOK1429482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eb810e0010df7265294e9ef485acb7c6dfdd03b41f278dcbfa02a57f289580. 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/SEYOK1526319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6825259804c4c210c72c6ebbaec2a40d0182afedb06510f216bdbf6d422009ef. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SEYOK1672594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447d2d48168494b3c906a475f05d2af7f148c7eefb6c791bb82b09c0c3ae40bf. 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/SE6XX2387026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x447d2d48168494b3c906a475f05d2af7f148c7eefb6c791bb82b09c0c3ae40bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/SE6XX2387026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5ae02199f602d762c97f3609ec42b600ae8f70bdb695239d5a6b2e1b507875. 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/NO2DY2400085.