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 0x16da1ea0b5c56d4d2423668353b0a4c93318c676901196ef28f8f485364aa314. 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/ef8b1b4e-8ee6-481f-98ab-7b6013a15693.json and https://artists.proofprofile.net/proofs/artist/ef8b1b4e-8ee6-481f-98ab-7b6013a15693.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 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 0x1e9c3d43d2a642ca69b45522b4c4c33f9405730c0898ce4636ec28a67cd8b106. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QMDA62307583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f656e095aa62f003af071ce1417d128821239975e7bceac4f56b7d5c6f8dce0. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/QMBZ92384717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ea43b754a9d790b1b9609d121f0abb267d90a51af49760904dade840f3e6c5. Chain 2 (Bitcoin): anchored in block 957876 (2026-07-13T16:00:32Z), 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/DEDH72300238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482dee9dcdc96633c3d24becd266cab37da32491cedecb959c57556b7e36e0a9. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/DEDH72300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74a5e3c24f1d1114ad3eb747c58496f9df91ea783c45640eeb146711c4714576. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GX4AL2100029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b52c612edb760ecf9116ea768095b707776ec2b2220e0db7fa3966762c9004. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/GX4AL2100030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75b8910f633ed4a7690866847f63aa08184633c5dd6eae999a15bf01c36c9b19. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/US83Z2423276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf0706072ea752e2a5e7a29d3071f1a054f90e3bb5def4a94cf61d311b00ffb. 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/DEBE72500069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa144ddca9eb4e1a8c15073ea400081a20c37170d43f54314fc6e1af97538835a. 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/DEBE72500070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec52e43eaf375b462d2b8d705aa6dcdd17fb6f11324806d0fd89bb9655d330f2. 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/DEBE72500071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5656919e8e6cb7af8ea5e9015909d284eb8b3a889ca5b449d8c6c4813bef02. 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/DEBE72500072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bd64586236ec96df14820d9126213a6a83730419fcf507a7115b3f9b24883df. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DEBE72500498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70368becf2b00c350abaacd1875cbe03ca8b1d05244f1a5c5484e955804a71a6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/USUG12508893.
Get Physical Radio Mixed by Mishell - Intro
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7126eae69a6290414ba510d455ef52b8677288dbd6c42da3a6c91a173f4f1ca. 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/DEBE72500274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa00f2d2676369bc377adc3d25ca6e7e1e1a17f9d55ea8dd215fe5ecba3c38e8. 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/DEBE72500277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e362358c5c28841bac2d4389bee51134d9f7de88ad216e2800cd710454399a. 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/DEBE72500279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243de3c26f84dfe772c36d9dd20d621cf4ad315c8207a5c682255fd6d801bf21. 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/DEBE72500281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f30353310791a496b7b98944c840e2df053e0df7b77ef2fd126eac577302ec5. 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/DEBE72500284.