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 0x97b38722225a116890f4484b0b40aac18a22459f47ce50444b3518f1940eda03. 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/0532813b-11cc-470c-a9c7-78ce180c226e.json and https://artists.proofprofile.net/proofs/artist/0532813b-11cc-470c-a9c7-78ce180c226e.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 0xd8eff26cc091ddebfdc29760c1e7ee524f868c096997cd29ab8ecb7eb8a99f29. 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/QZNJX2059339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8c8cd535dab3ee8eab84470862bc8d0b31b4f0aba80f97801a12dd1724e671. 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/QZNJX2059547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcacc091c441805581c4ba35aff37e402fa364a91f2ca451b292d17dcb4ec4882. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:47:38Z), 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/QZ5AB2287759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dd2b53121b5a9b591091ec7ed6c48282b9d1ae9e03e9b46f0084f35f628649. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:17Z), 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/QZHZ42232146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1630e929850466951dbca21db4eda68625b50d9ded0fc72bea92eb54d02a2979. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QZHZ42220377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae59323f0db02b7dd68afb907b5c9eb8acac7d5848be784aa063c526e056d048. Chain 2 (Bitcoin): anchored in block 958432 (2026-07-17T15:43:17Z), 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/QZHZ42232296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ed66593e4e56e8091e1cd709d945ae3d1de52b232de27cd20966d62e0bc17f0. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZW9L2274775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002cc72e11acd8595c0a9ff8b40f0810590b3a3686998564513f485db7d8fe59. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZW9M2217933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9cbe235a0c3f8d56c5b707386e0f9ae93eaeb67d9a9173ddec8ac683f736ba. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZW9M2247237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ea82bbe57c6a8c6102caf71bf8a48612ec947852f125d15d7bea7a961f0444. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZW9M2241652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d27b25da620c5ca2e30c6538a26840b219bc4b8e4cb0690570f322c291d95a2. 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/QZNJV2379053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a033535aab924691442da8466a08dc14e03592b83b358aafd6fb55900718f24. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZNJX2372132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bcfbe2d48dc395ade24d3348c3a515870cdaa954900813f7b16ba278bfb6be9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNJZ2308553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c88d7244270784128c9651cece78c3017f19490f3e917ba993f06e30380923. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:37:49Z), 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/QZW9K2338037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a0542de859108e76d3c9c83009e9e2c585cb67608c419bc0e77244268cf6885. 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/QZGLS2474678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26b7a86021f09d9efccba1e71bb9aed91f20ec927f6f66b2e5aff0ae1e448a33. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:51:53Z), 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/QZNJW2462326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b59603b2a6d1e2f8d0b168774be8eabb029ae002a495f382b8a45d7d1c1d443. 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/QZNJX2444748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906d321a629aa99561dffc9708ce6cae5107ec395a5b62cdb0dc129b6f913be9. 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/US7VG2574911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f9669a21e83c49db8c9f2071c6f123aa629f4d18e5451d2df1c9096c639cfff. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:55:05Z), 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/US7VG2599804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452e71f35e55bbb1233c46cec9f3b51596b7098177587d73544c82c044e97747. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US7VG2582065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbc4c5a2850cac402a85c669625b63421619d74d9b7a3d2e6207c9e2e5bf6cc. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZGLM2503192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e85bb96d44b71115d491a4f8cde3fa2decdaa9da6b91799a325db26cf8e4f1. 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/QZGLM2599411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43aa328f396b4fd0036b1c6b665e0ac615b67ff4e5e28bd3d67e0e18faebcaea. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZNJV2564560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4e583ddbc2d5d1ab57ce4434b700867e9fff3adff2721b7fec84f1017a8dd8. 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/QZNJW2426943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e768c7fe997c02c60d4fe19fab1a9ac23b4236f4d6360c149d23759fc1f07c. 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/BXNT62207641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e768c7fe997c02c60d4fe19fab1a9ac23b4236f4d6360c149d23759fc1f07c. 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/BXNT62207641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61eb7755f04dc79ed6b0fcafff88149c1bd87ff5f88b417e4e0997519b61f113. 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/QZNJZ2413085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336e1009b38a470de83f3b274a810400e2b1113ba1f261f45ad8bbc8ce3bc595. 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/BKYM62400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e1308b2dc0d5998a2d703a6fb0a87f466caa16d96d1ac3a7b2e6398643cc2fc. 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/BXNT62206832.