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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa860ef99692f1b7b230955d1e6e1a3b6c7089d4b093c206f80cae02632ab50ac. 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/062c3d06-155c-45a1-869f-df10df70eb73.json and https://artists.proofprofile.net/proofs/artist/062c3d06-155c-45a1-869f-df10df70eb73.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe95434c743e42546a250dee256694af3c6d114a38cb31b2714113fdc68ce033d. 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/USCW61506201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3a3e4eca1e802d36430e2031ab23f5a8ceb0b195781efabea0540ce24fd338. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USCW61506203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b36afab3db4ec7594bb516221828f16bf13a24fc778ea0c78cd3dfbdaf4cac. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/USCW61506204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46a2ec099bad7b3aea6c4f524316b1cd47dfc2fe9c4d5b162b7e33141468b647. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USCW61506206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb469344d89ae5468a1af39c7f4aa0e4704424b96f0639ac6b5bc7941903ef4bf. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/USCW61506208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf68f15bc4943312817c9bbfba718e5b83173604eabb607c1b04e95948238f1f9. 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/USCW61506209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e75b0a19fdaa59f7221f3e977daf0c04abe38c7f8b02986aaa76e06bce02672. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/USCW61506210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d116331426267d6d05a9e93b6ba567c1c5e6f5421bcbd00b0d8c211e23ab6a7. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCW61506216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7df89da3d92b6e11899e4078fc58ef9e6be4498f54ef6656bf52627b38c36c3e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USCW61506217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf3304851a6eba3ee2028d4482190b746771307441cbc6a6d9bfc53db862eb0. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USCW61506218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46888f167e93d5b913c517eb01380780b52635367a189d346609f670647a1a8. 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/USCW61506219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08184319bcc02c69ddd5d0d52594929a87d06d83768a48f52df04d44fccfb147. 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/USCW61506221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152db3f87733a97539d853878a3e1ed5685ba604aeb3accec581734ec37caa18. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USCW61506226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863792d2068720f1a3140ffe4efe61376dc74f522eeb095e01c6ce2885d7fbb4. 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/USCW61506228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8281cf6ff5e6bf0b8e0dd3aa1faf4978c0515ce0245610afbd1010216ae12d31. 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/USCW61701503.
Take Me For A Little While b/w We Go Together
Is That Good Enough For You? b/w Ask Me To Move A Mountain
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c2c5de9e7827b84b52cf67ee86bc8567ab0ff8ba5b001da2cf8431b77d77b0. 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/USCW61600812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dacc5971ef811a9bf0ff15f4b3182a18235b0d0effa135cc1b9f032ced4be9. 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/USCW61600807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d116331426267d6d05a9e93b6ba567c1c5e6f5421bcbd00b0d8c211e23ab6a7. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/USCW61506216.