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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbdbc4658b0a5e0b7d577928cfccea23e0ebfaf31c4210f8b7df664a987b1504. 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/d8f05885-4be9-43f8-ab8e-f4c834db0bb9.json and https://artists.proofprofile.net/proofs/artist/d8f05885-4be9-43f8-ab8e-f4c834db0bb9.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b81ae71692f1e6ed3b5dffa92c4536b9169aba99afed912d93413303685f4a9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/AUAJ11600014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x329f17106e3f5e81dc48a70ae6d8e6adf938d5062485a22f7143001b49e0a5ac. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/AUAJ11600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8513e1d8bdb064a6926033345700bd8d432f874a0b3460d098d1ff304df01aa2. 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/AUAJ11600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75736b735e9ee156280f864964e3f92f7bc4297b15ec4a7993b299eca913b818. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUAJ11600025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64160b06467c907e6c3de3e6827fb6e14b3175752cfabd0250625e579e0706fb. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/AUAJ11600026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359ddfa9b55840c16a77f63697286aaf595606ee0d58f8c7c3f220a4d065cd16. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/AUAJ11600027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd48ffa42d05a4328c016e57c958db9c511cf891ef25fac4ddff708c5880e4319. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUAJ11600028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572ebc2ce900da454f409e33d2a6c7c6e87afa160dd856df6c332df168220b3b. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/AUAJ11600029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550e511cbef008f37b08f0b7de6b39b1875b84e64ee50972d2391debc7f247d2. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/AUZEM1801548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41f7a7e4ca7e0ed1f0903a80b6e667f7721da246e7dfaa1703c3162a8c9dbfc. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUJN11900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72887e615b5d9bf66801189b9904508c55e77ece172596d5e392c851662133de. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/AUJN11700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d63f9c5ea69ccaa9a75516b0e00ff29430fef21593a21f14738ace97bf8e36. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:30:37Z), 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/AUZEM1801549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb27803b3e7ddfa7c503d82121d0561ee4f9409fea05a0fa6ae76cd42dd31f9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/AUZEM1801550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1128aacbdc9a5c823af346d579e6bff12a566565d394ca749985cdb3749dea9b. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:15:14Z), 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/AUZEM1801551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d7d30afc36da6edf99c45507c4f8fb815e5054f98b05ecebb715a44549e713. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/AUZEM1801552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc5a95d8a303932bdec3d8a459435fcabc9999c6a3da322890205a35c8effa6b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:07:02Z), 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/AUJN11900002.