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 0xe95b018df09a196d420095210ba3ecaf5a3128138b58c4c360d6e53698db761a. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0f78e5cc-f9b6-4ce5-9eb5-c77ba5c34696.json and https://artists.proofprofile.net/proofs/artist/0f78e5cc-f9b6-4ce5-9eb5-c77ba5c34696.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 0x49a192e6b8699d410eb0d7b03f185403656a9a93595dc996044868d3439ab970. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QZNMT2433034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb262763dd7b6ffa34e7c82f2bb0b0f18000920468d1db0d343ddf25f2986c5bd. 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/QZNMT2433038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee13ee6bc3ac3ee7c1efcfd9c693274611491a20e918cec2092069dd928682a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZNMT2433040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4738b293103e10cce0f46c65086d8e6e35e670c7884bdb30011e8f59766700c1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZZ7P2449561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eaee3d1a8d2492dad0cdb05187b0410e5d6e3e6ababb6dd431f3e05b7af4b88. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:00Z), 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/QZZ7P2449562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe666d75339bbef8971bc15b4128e53eced21b6a73e42decfd7203e04b1c81dd6. 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/QZMHK2501742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eee13340f1f2e262146a7000d47c65365187a70962edfc7a7e10da4ba509041. 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/QZMHP2502666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d0fba02cf2a8b865aca04f190b4df91d8df82a39cb431daa293615e32f2091. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:55:53Z), 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/QZMHK2509819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f8348531279814601c8ea8a3b1d2fb5a136269018c4dd1f18cf4a39a8cc03c. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZS642556404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5beac951f66474fcb7e7b0cdde16f587f89b2c0eb5b929f526c3450588461194. 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/QZMHP2526255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb6b7fed449bd1c20e03b0bae2b0ad1eb38a8a00b1cd594abd08d143c535180a. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZS642589192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a4862a7335b6330eb52dab7e18aeaf23b6ade7be8e0523098e162c0951a3b1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZMHM2572036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe26c2a8a4f5fbb908572a92fdab715a0d5ce34f315f465848347f4c62b07690. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/QZS632509979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedb924cdcf44a082ee4e05d1348e018e4145b4eea95b11e047a8d0b23bcf5606. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:09:18Z), 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/QZMHL2541318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa91278b99ba13fbf7f435ecfcdf9ba48f65a3388423890fa662cd0024e88ad33. 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/QZES62529925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9e803e2e909c4a680a7e40453c85e3e0e31daa53274f8ba5559d326e5e29ce. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZDA72576298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f6cfae0866ed67887a946e9cbabf4dbd81c6ae4dd497315b187ee26b653e68. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZDA72576301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c9e803e2e909c4a680a7e40453c85e3e0e31daa53274f8ba5559d326e5e29ce. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZDA72576298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f6cfae0866ed67887a946e9cbabf4dbd81c6ae4dd497315b187ee26b653e68. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZDA72576301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e8373f4058f4be9019146b50257dd4c2f7c5b5996bf0c3523a9624c137be80. 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/QZMHP2542578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa678669c53caf3259501134b716d0caca263174e59c18a362aa2e0037b312ec. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QM42K2596895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d690787b1e9f83a49847a82ac5f2a61e1df5e55c7dc385bbe35ffe7484460b2. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:42:02Z), 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/USLD91780892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bae3436397dd852a2d020432a73660b00095ab305787076870b22e38105624e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USLD91780893.
Golden Child ( In The Booth Performance)