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 0x3568f69222d0860641e3c47d690743808a04490a0307ad8225b2f2667c606388. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0685789a-354d-4667-903e-cfce4f3b2f68.json and https://artists.proofprofile.net/proofs/artist/0685789a-354d-4667-903e-cfce4f3b2f68.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 0x22432106acf18e16fe19a449d0e356e2878e3c17830695f022a5cce9ad677712. 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/USAT22212101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2611b5c1f3f2a7ef1e231f9ad40fde9391355a12c9abd74e11c2d43dc40e5d5e. 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/QMJMT2103763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e824230b9e72fe663016e1ae867cb828767bd45e03cc84d2699e09a25189b94. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM72112691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b940a74537642726bac793df117e8505642df5389757812e793d3b87ebfca6d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USUM72112689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e56d82c9ac0ce3b7bdb7a51c4a8c45dc39e3b9b37561f77450e1db0663eaf2. 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/USUM72112684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681f4b0c2120feb56cf3b00e16f6dea8297352c1ee41b56c931c5b8e70285fab. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM72112690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78e3592490af670cc2f3c1591f2b6b4f89a017154c89d4a63c504db480956c04. 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/USUM72112686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0644deef283ee6ebd654571987d29ec92cac0bb8ab25b36ccb81e252b16b8d0d. 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/USUM72109697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa127daf1b6c9bfd6d7553b72bcafa26fa2108f9fa54fa5279c1a0d1d6aa306ac. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM72112688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf126c31467af8f3b79d899a9df9adbe84271f1c72eaaffd025accf40190d4758. 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/USUM72112279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1fec6bd394d86a705f2a2d7d8cdeb38efab339fd2c52fe1a7b3e0deded30a20. 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/USUM72112685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f01368be3c0ef6f2ff28542a9359a072a28376967e7fa18220962410347a886. 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/USUM72109894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a64d5ad5cf850c2c4d3b4e8fefdba3e77e4ba5be3b87503f5e39505d4b303af. 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/USUM72312649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e7bf1b00d036b3fbc360db3edd84ed010aa41f9fe530f66583f75b23678b3a. 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/USUM72312647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a09cc248922c6a98db9c7be7dea6206fdd3f9e3a4be15fad2f8648d02404955. 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/USUM72312648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e3d017085d299cbc222d52e252b814c364eaf7aeefa51f32946196a0818ed7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM72312650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b82d36dd66427818612a1acb257b8bc0a2b2a7fe45d5f212a17cfab844920b. 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/USUM72312654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x222a156d28a43cd1d70a40523961683fbae6327d37a7a39b094bfe6152b6b383. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USUM72312646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92025356329b3724834f865da27565aef8933e538d829ad1b5a7ca6116adbeb0. 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/QZTV32341228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99c10e6dfdcc7b29e777c33c693516a778de66e7524d143be80073f4922c963. 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/USA2P2337910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e30780347258400cbb091203ca02e965a36a8bd98cf8e179304abaa0e587f9. 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/USA2P2337909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed3adbaca51c3b61fa56779c8d9af5da19cdcaf3d53074972d664ceb0ffde2a0. 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/QZS7J2229579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4905a5b1264edccdb8bfce1caadcd8838ca5daec2edfb408782f561d0c319578. 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/CA5KR2272922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0644deef283ee6ebd654571987d29ec92cac0bb8ab25b36ccb81e252b16b8d0d. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/USUM72109697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92025356329b3724834f865da27565aef8933e538d829ad1b5a7ca6116adbeb0. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTV32341228.