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 0xe606ff88963c929685c30d873b8c325229eb51a7b0e3960b396ebdaaf614c187. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aeddc284-70dd-4ff3-8d85-a2801fa34d02.json and https://artists.proofprofile.net/proofs/artist/aeddc284-70dd-4ff3-8d85-a2801fa34d02.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Do Hits Presents: Year of the Monkey (Chinese New Year Compilation)
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 0xebe26512648ee8b138df4a800465ebecf44fa9c327c7ac45207ae027ff4fd044. 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/FR10S1669718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e516d404336c48387ebf4f0717117054c939f20d1edbbb8ee2efd49aaed526. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/FR10S1669725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71ab88b1c64375bab4095c8f82baf0e23dcfd53971793c5cff5e472b142ed6b6. 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/FR10S1669727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5d6e29a745c7ac4fe681008eec7536e6a9aafa982e4961e72f310c1f319ee4. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/FR10S1669730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf664df447d37e80a3feda4c7988aaba6ace797f2d4fd0eb9e8ae47b04d297473. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/FR10S1669731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9176b280bdaebbdcd804793f7fae0619243691fe363b25477512df94616d9eda. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/FR10S1667283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc73febeedba5c71c6962bb8a1ff8bac4ce6202e7d8e4fdf36e815e8ed733ec84. 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/FR10S1667284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa334458c0a31e698f072f351f61e27724ab691903904d3ade72e0ad67ec4edbf. 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/FR10S1667285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b223f05ef1d94c4f7808b336b0f02ea42b4cd8220b7e83167b503801ffccced. 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/GBHLW2103431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96ab175e8f80a7615f4f256532a185b27369135dd9318a2e4678e2c8753eedb. 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/GBHLW2103432.
Digital Properties - Tomás Urquieta Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31eaa6e956f338f533f6b8f84c869c4205290419eb249c49f4adeec07717280c. 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/GBHLW2103433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb002fc27e10d274429566bce51ebdd389c5bc35f84f1d1d1f507ca3b12d91fa. Chain 2 (Bitcoin): anchored in block 960101 (2026-07-29T11:46:30Z), 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/GBHLW2103434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888f434b337f0086b2369919a43d5f43d228b2f238bd8378b6376134c452b1a6. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/GBHLW2103435.
LCD - Estoc's TFW Your Name is Written on the Ostrakon Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e1aea1dcc68f8aab19465de632dca95150b81b6385e9713222c45f00c9bdc2. 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/GBHLW2103436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd07bc1be0f266af0474086690a692f0ee6344d2cbfdd7e3481ec4f1c07a779. 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/GBHLW2103437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf0cc82e5c4e2444a35b209f634b22a2824314901aa9982114f9cdfcd3ffffb. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/GBHLW2103438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839eb9ad26f0934cfa4afac61d9566e230807865362a9fb3b8ebff6d78515fea. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/GBHLW2103439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3420d02d7119b3d3203f45f9d0cdfbea633ca3f7f7309a9fa15e1af8b1c95a. 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/GBHLW2103440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eda26f9171f88987c12d75b8be8fc4552d4a470ed47a6e3e122ce923b73ca72. 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/GBHLW2103441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf26b1cd9e8ad953b9cf55a84e37c193f9642cc16b012c16e69e76e56780379ab. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/CA5KR1572506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08eacbcd49b454e1849e08228588e24bb70a92a4106ca713a33d3b7c7db91ad6. 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/CNZ511900396.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705aba8b48bd1c8e1083b258b71ed4c26b9df977a291a7a9934403de66a16a3d. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CNZ511900393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad6a9f5c63b3074d87a0238fdfe3e3d88ce0c55549372adffeca61765d4a009. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/CNZ511900389.