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 0x6af99a64f053674476258a332c013cd4f8f3c36740757ed7321cc37211827d9e. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1591952b-0831-4f8d-81c6-6a294eb06d49.json and https://artists.proofprofile.net/proofs/artist/1591952b-0831-4f8d-81c6-6a294eb06d49.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Straight from the Decks (Guts Finest Selection from His Famous DJ Sets)
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 0x153e85593f8cfb67de97114ab1ba3096e429d7c8f961c6bee28dba14e4360d0f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR4EO1900053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc00a9685ff79bd22670d692b4bbe0d48d23dda4910a18ccd555c38a7d66226b1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR4EO1900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe30e8b8e95922d69b64aa2ac083bbbde1ad230e48b9a3756958ae726e8471e05. 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/FR4EO1900055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a6858adb128514b40f2b38855829d446c93bac834d032899082c3f7d054c73. 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/FR4EO1900056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ec80ab73a7fa60d45ae87b5aae1b0fba8cc74e1273ad1fb6dd100f88af1032d. 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/FR4EO1900057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16dd99df4551836ac08e9efce0e0f55d7d2187c67b6be7be4366414847958d06. 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/FR4EO1900058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0707cced81b50c7d2aeaea71c6bfb5057669df6bc96613a7d96c3aa47cff312f. 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/UKC731800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64f0fed5a8d7fcdca3410bb1bc9ba01ca5e10e4bd39549626d170710a561a35d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR4EO1900059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff79f805d86196afe8a8f5fd977e6ddd639e8f25ea650d21fa472f2c12b0e6e6. 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/FR4EO1900060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d70a14bf631e530494024a7218b00c90471b3da9d0ae0e76dab69768ff4150. 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/FR4EO1900061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8137284f8e1443e183109858bf8aa597a5124facc98ab21ce7baa96e5fd63b2b. 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/TCADC1790207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed359fb115d750954798781071ee2aae53ef8ed9cec6aa1bd268f58feb7c7ba0. 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/FR4EO1900062.
Il a déjà tes yeux (Bande originale de la série)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41d84b7ac7374b3cc114bf4848c8915d5b1919b311fed13a7af4026ec72b60b. 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/FR9W18400138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58618513f61fdc8e05ffbc3ec79da891c8a297702590be8fda2896d74b3f9ca. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/FR9W18300132.