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 0x2fcb4f94634ee881a81ffd56bb79517434c018a58d70e13a40c5c8503b47b4bd. 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/810e805f-49c0-4943-91be-a78ca4e0b1a3.json and https://artists.proofprofile.net/proofs/artist/810e805f-49c0-4943-91be-a78ca4e0b1a3.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Mother Nature With a Molotov: Molotov Season
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 0xe8132e985147232f56c12638ceef8e9ebb0ff7f414e4dccba7c807879727b7f9. 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/QM4DW1821910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b13581badaf9454648edf73e798a4159442eb3663f0641d990a20c32607793. 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/QM4DW1821911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b06c5358bf799b3bbfba4ba360fb47e9e126de2bd5149a9d47ae34d013779db. 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/QM4DW1821912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7d4eab999e031915e32211fa3f4081235ef8e71f7ebbbb467ede4f214cdc9f3. 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/QM4DW1821913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e6c11e1f2e9c2e0a1cb46398a6009987ec8bf2c4952215f64e461ebab5a2548. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/QM4DW1821914.
On My Gonzales (Version 1) [feat. John Robinson & Ekundayo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d07419306011f5d7b9d0c85e19b8f1b4037a61a69d5babfab0589094eed9aca. 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/QM4DW1821915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f15a3d44cd814b963772cfcd4c6be194dd2a021b81535515d58801358920f4. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/QM4DW1821916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0b656274041c8b3b435a5708f16f0c7cd53e26c53f9a1ffa735b282c495865c. 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/QM4DW1821917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f49c0ba59f9aa3ecdd674950f6785c673350d1d913f1b3e41854642960bd09d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QM4DW1821918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1928d60805b4e669bd69faf757123eb8762de1c09e9ce19f8193162b790aceb8. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QM4DW1821919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5899d0903ac2918755e9be04434805b121bc2dc4fee7fdaaa048dc4636e1d160. 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/QM4DW1821920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78ee0fa3c97012e3fb0035a932e51b03b723257d631ea18b55ead6df849d182. 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/QM4DW1821921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6563c6cc64df9e90b9c46d1abb6c695e3ab82fd6fdf3ff7649791ec677cfe419. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/QM4DW1821922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x285b236e0d31fdd31d81a9206f3e314bdff04ff8ecb46d761172f7331abf02f3. 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/QM4DW1821923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe95a49ca6790c7eff2a0878ebaeaa2c70baf0e64b532a32ff0c1186cceb29e1. 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/QM4DW1821924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e8842df7e5c9377a37cedf45ed7f0434d84a505671a913b31bc8bf364fcd127. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/QM4DW1821925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x366c5f0a1e266a174cb15a22ea180550621294937bb8fd4470f9adb65b6d84a4. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/QM4DW1821926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a6a9b9355fb26cedfb8001a6959e0cf444f261e816f38134534c815cb7a0c0. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/QM4DW1821927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb97d16710f54d65e0008f1337853b72290b2a111f4e072ef6a3f5d47fc1770a. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QM4DW1821928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56662fb4928114461c50a04717272024d8c66d3dc6b9058aae0ea568dce0c23e. 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/US92U1911547.