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 0xc3504f1a52b906d98d9736fbd5ec77b88998f2b56802eb9962d96cf371d7307d. 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/83647739-574c-4707-919d-5ee3995a6685.json and https://artists.proofprofile.net/proofs/artist/83647739-574c-4707-919d-5ee3995a6685.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 0x33ee1e22f9abdf63b3b609d1a51815fa65fdf834d1c22073c8cf8099b1ddc2ec. 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/USHM82088308.
Safar Hai Yeh Akele Ka (From "Lunch Stories")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ee1e22f9abdf63b3b609d1a51815fa65fdf834d1c22073c8cf8099b1ddc2ec. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/USHM82088308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab564f654c5d26a141f504c1daa8d72f3245b6f5c4028c69ea40a1f019aec11d. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/INUM72500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6ddd877b6c452ec6cacbe62da8f1c62f9de22b19b91aa9eec77edaf29a6a7c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QM6MZ2409783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f45eef8503b034042b12ea7efe9fb5aa8321e1f22e23a6a612aad6ba13fb0e. 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/ING602100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a894f123fb8cc5213cc8ac81b95dea124780240b6f1ad4abb1144eab248cc1b. 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/ING602100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe0c8fdbbd599b4e931d5c8b8d0c5505853fc5d9b40324ba4e73d6474b5d09e. 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/INUM72500314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5b240aadcd54e4547d0e01ae6aa3341c839854d3edc94d2ffd25e67261d49ea. 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/INUM72500316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d06e09084acb5baeea4e6dc1a0e2dedeff19e92fa70122daae0e6b9a7149153. 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/INUM72500319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557b5243b9e3e1d6260f8e710a514d0bab20eda5f294c8083d7ee457c59d9903. 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/INUM72500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6ea6581470d7458f53c0e8da4390f3750c5f6b6aa85347703f4c9fd61e101e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCGJ2260757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0505c051e268c6ede925df9f5aa347eb06e75c90406a30a4f41c1f2e37f0aaf8. 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/USCGJ2260760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52345fe6d4285828397a3b3efa6d73a3d923829935311981520304b853914ae0. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USCGJ2260762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59550ea26196314078a8f01bab3023cef604228d23bb6ee443861a680538a9c. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/INO131603288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5da00dcc94d4ba70e7a17333300955c4c9b12f4a82dd886e111e9316e28ee4d. 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/INO131603290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557b5243b9e3e1d6260f8e710a514d0bab20eda5f294c8083d7ee457c59d9903. 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/INUM72500005.