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 0x7349e50a22dad8eb75b56e852657c551766f89b4f55749788fb699674252aaba. 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/43083352-4406-439c-8b69-f13cb721f203.json and https://artists.proofprofile.net/proofs/artist/43083352-4406-439c-8b69-f13cb721f203.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 0x59c0aba929679e8ea95a28181e86fdd53dbb3faa4e166688d9151e29195242af. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/CAENV1914757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bb0e62669cee410510b8abfe17612e88314b7e26b188cc1766e3a424e8f253. 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/CAENV1914762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8febc2b7609cde68bfbfab10c1c6ce8a143e6f74187d04cffa1bae682efbbdf9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MNA032000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e41b9082cd6c59f05c83e62b24536fd77d08afd8b9b322966cfea82477f303. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/MNA032100098.
No Rules (Music from the VOO Original Series)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68e1de8bc0a00eae9e8be4725674bfb0b477b086abc51a185fc261a4c328069. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/MNA032100176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4149ecb6a2f74e38e276c432f4ab713001cce953f44a158e42202517ef4c3f6. 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/MNA032200239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d0ae32ec0c8eac270638be7d861e7873c8f144f4137301ecce20efa5d00c64. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/MNA032200241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36f4196b1e6b90bb23fa32552e755efdd0e6d23e3db3580e5c6d9658b321c4d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/MNA032200245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53efab35c3dcf1987fc9c829eca8bb519c8d834d466f0f135d5712543acedfdb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/MNA032400141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb35d9c4d4f0708f400afb645d62a65b7c594043b3029c644c382165dc7a6097. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/MNA032400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c688244ff6be829ccc2bb994eb58aa18af26d95425beeff54aa102e2d543f2. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/MNA032500007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x172961edcdf64883225b002bcbad1a7a6d806cacc7720e09f24e578ccdc6a260. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/MNA032500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf996b3275133dd96d5ea21716da982b0f143623a93b1451018c9ac0a4dd9005d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/MNA032500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf143e5f2b3ae7ff8e4453967bb4227983a6be4b2475bbb5bf2b1cf2653a94d6e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/MNA032500287.