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 0x44bbd0f42cbbbe8df40a7230e1f87cde88942848b060702dfc48e4f0fce6ba1b. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/84c40416-e74a-4472-9f7a-444227ff5439.json and https://artists.proofprofile.net/proofs/artist/84c40416-e74a-4472-9f7a-444227ff5439.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 0xd3b8da052f0f7cd13505e997ba896028642e48322ac7bb3a28c9bf614b80bd45. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/AUBEC1934462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc090cade3feb68663ccdcbf57c5ebeb0fc480391b7da033d6d37e28dc222999. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZHNA2068160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bcf3d05553c36efed1c189d760d038dc9eb1e403653b39b5d7d465c8e8a5eb. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:43:57Z), 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/AUWBY2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf17f47fc8b97c0469153e0c8ea862247a5903f7bfb51f87d1b56386998b9e0f6. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/AUWBY2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a44589b79c91cf39df198c69219510e1bec519b1967a33ff1a61683259b1e4. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/AUWBY2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacad32c51643ff55863ea5f4b28c9f051d4d570cc2521ecde2965155db0451cf. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUWBY2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdd4e3eae05bc30d22647dc463271c3c44a4b4eba4e1aadb2d838ea1f6986104. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/AUWBY2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeda89ca1e9429a651c3e3931aa7f774f79701d35b74ae8f3c3c36c48d591d66b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUWBY2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16255ad22db5fe5148d8e67ad8e9b4be11fc49783f8decae617773fea616d746. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/AUWBY2400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7741b5b5803fc74749a5af68b8c7bf3511f6d2acd65439a54b1ce2bbb445f9be. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/AUMEV2404937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41c1e49d45802367a5cf352e9c5250485ca85e59c5ecd46e65ab02d1bf70386. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:42:58Z), 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/AUWBY2400014.