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 0x847d001dd749705e5d0e64fb397384afd17b792a7d5725fd3779ec1b4748d9c5. Chain 2 (Bitcoin): anchored in block 953592 (2026-06-14T05:36:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/036bf2c5-45c9-455e-819b-6afda022d850.json and https://artists.proofprofile.net/proofs/artist/036bf2c5-45c9-455e-819b-6afda022d850.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 0x1807b32eb6dcad00fb9faba45b9742e524c0bb36ed4b41205c5ee3cb7b07ca32. 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/QZS642372911.
eat a healthy breakfast (so you can run from the police)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8b5ce39b610cc5429e6728fea7a496fcbc6a93b1b4a70ca64c9fcebb495da9. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/QZS632349230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dddaaf425cbbf4f5a02566be6e156af3702ed33fffc34a5e4705017dfee6b69. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZMHM2236064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e33741978f88072dd88f164a671f3675a093c1033b8c975927b599b1f87357. 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/QZS652495927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e62e1d0bc75a55493b46b6a9395d9c27124ea52a184b55823d19ab35462ef2. 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/QZMHK2445958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090823c75a04d4d58a076bd14a748d805d5546b75d0d23177b3551793760d884. 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/QZMHK2458932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70dd986c937d4593c3c59f64b2b8ebf7426a800078b87c62bbd4d7f702151003. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZS632452242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf24db8850a06d049e826b3a13a6cfe3828ffabcfb149a300093d71b36d13db58. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QZMHM2404781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a426fe0bdd5474431bdd5a1b1565b751f138f5447bc6420121fedc2a748efc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZMHL2430131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df053805b6aec5608a509279de36f670208d656235c57d2050e7244c24e1e41. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZS662498159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6d9f39351e893a42d0239c98afeca0fe778a744a47e2b8d386ee38899a03af. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZHNC2507401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc3130ec3b8a0b018e23c1009e71e4eaba8a5e84d8981b56a7fc9b2268d58ab4. 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/QZK6N2593267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6a023b50229f79444b269fcd10a1371cc20423e858f602478e68512bcc8359. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/QZVEM2571443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc14dec644c29d77dd8b7636f1ab0622328ee009b5ce5b488c4b3120a85f67689. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTBA2543484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5064aef34879a77dd6a74c4e798e01a48467aa99534d7249431ce76a83d92c0e. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZZ7V2533275.