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 0xedc18dd25141e33235cf18598c5c6e631354a2637524406390fd1f9fc158f53e. Chain 2 (Bitcoin): anchored in block 953648 (2026-06-14T15:20:52Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35ba26a1-3c83-457e-98a1-50f740d99a91.json and https://artists.proofprofile.net/proofs/artist/35ba26a1-3c83-457e-98a1-50f740d99a91.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 0x11b62c9c86511fa8a21c1ab17254b2f40638512dec98e1fb7ed120b55aed62f7. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/NLCK41092984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f874a8bfcac7158f4e81df9cc1a45aae83e39b99225f95098c6049a0f7cc6b5. 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/NLCK42211099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c812014c90f4dfb34ec869a1f51ccbd5b242fbfeec1db7f8a4b0a9dc099552. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/NLCK42216829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0421b17be1c3f46769158cd3ea4c4b4edf4616995797f0f024bd13a349cf4f8e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/NLCK42216828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc982b92f3eed02f70485443bb8d89245ab6b2e6b3e4f445c7880dc8afe381f. Chain 2 (Bitcoin): anchored in block 956809 (2026-07-20T11:55:59Z), 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/NLCK42219174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32ee4e1cdb77ecf72b63328ad1c55f8767d75d30a01fe30ddb4cc489a8d5772. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLCK42227269.
By Your Side (Annual 2024 - Viper Presents)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa562d071a106d4c2693a33c16519eb7829ade9d7d9c9514afb1e045a5c768f05. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:40:05Z), 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/NLRD52355259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2f986fce17577aa4a566b689eb28d41e121bf18ff511e231bb97863e578232. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/GB8KE2515006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8727e709e54992df1c16568a159d156f590fa4057d61b4ad33ec192a9a170de3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBTMZ2201140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae50989cfebcb8c6c9247d4b4025e91cb02a4152c00fd4df90d5d0abb86a9c9. 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/NLCK42237080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32ee4e1cdb77ecf72b63328ad1c55f8767d75d30a01fe30ddb4cc489a8d5772. 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/NLCK42227269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f874a8bfcac7158f4e81df9cc1a45aae83e39b99225f95098c6049a0f7cc6b5. 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/NLCK42211099.