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 0x3c5f9f0a4eb35c2dd74c20cd40e0244a5f3f9aaa77eb4a5d3a736dadb2a10cf8. 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/0c4302cd-768f-42e9-bed9-0ad1757be674.json and https://artists.proofprofile.net/proofs/artist/0c4302cd-768f-42e9-bed9-0ad1757be674.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 0x79bed5fdb863218c3e26e6fe64fb78f444c37f8c7e10f65c397801c372787736. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/FRX872188814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d0b56cd526dfc845e9f37d805d89a509973af7a1b0fdfbf75decc4b20834e56. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/FR2X42282816.
Freestyle la rue 2.0 (Cotonou - Parakou)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b08895beca2f53f630384256879db39b3306a4ff7c4db02ecd60f4124ad9f76. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/QZGLS2300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9926c83531c8857b88b39f970d68ef7910135cf0356c39b02cd82ccf860bedb7. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZW9L2378959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25716fbcf677afc1cbe4b8f02b12efe1cafbe4562946582d20b63aef1498c86e. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QZNJZ2444412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd051eb92fbee73d54c864ac72c2563b17c3b55380666a0a0e228a865365e955c. 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/QZW9L2462093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b5520abd596c41586c7c984b1d029c9e70fbb3909df4dd1b3c438119d74576. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9L2462095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f8eade89451f567bb8035462eaa59ef9e344d9f473dee390c170d88685e5429. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZW9L2462096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c472665c5dd63f3c9efaaf6ffc29a6a1a1c19ef02af8250776aaa2706f9cea0. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:27:37Z), 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/QZW9L2462097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b9a50f11d1061346e17141aef5bf3943f4698a86359f7aeecb4ea7492fc9f6. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZGLS2551659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77066c76d55c67fc06942785acc6b7f87ab4d1d2ce622cf3e17e3d113a92c53e. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:57:44Z), 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/QZNJX2586253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18d65c5f91760760a016dc5f2d427849e4e9d462a3364efc9d25c941a201aa0b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNJZ2586100.