1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x4fcf80ffe709da461a624d20c1b5375fe07eb1f96bc6ac2fbae89e631a277a2c. 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/8ec457b9-f6ec-410e-ac35-4fd8c148624a.json and https://artists.proofprofile.net/proofs/artist/8ec457b9-f6ec-410e-ac35-4fd8c148624a.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 → block OTSBitcoinBlock must exist at that height 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 0xb138067db5cdd04fc339a9c5140ce7c5a10b3e8498afc3aac795b5ea37dfbb8e. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZXYG2401925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53cf483adc2e625d671b21ed6f3124a9a3471941674e2d813e1e5663ba823c22. 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/QZXYG2401927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff989ca00b8ad74321242080462099b5fd8efdec72c801083859aae90d61f82. 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/QM3DF2199836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1448c5eb1dbd7b9a76a9bf81b52ebeb20e0932b2cfe33315b7a6dd9c1b5ff13. 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/QZW9L2274673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02252e750c6fe848d24a6215f927245ddbcfd492c61ca4c5a26b34f707292d61. 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/US7VG2334793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90512fd229e7e5a3292c2ff7fe4c2d8f84c4d7498c4e580ea04e75b2bd06372. 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/TCADR1881713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754ee9c44ea3826793be0308fb80a68ff88c8aa360b93311017aef89e5769b9c. 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/TCADR1881724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b0e13fe6334abe6bf9b7c927250e928a00b11e001ab8bef7ff901d0b8a8799d. 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/TCADR1881727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743ea0dad914c4408ea45568f1f38adab59165ec539b440213a87a69342b39ce. 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/TCADR1881730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45919eae66ea8b7467fa9139072ae21a1ddc2af4c0d588c0d7f8ffa95d76ecb0. 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/TCADR1881738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca805600b22f819137505c030ce2b47e6300fc59e4d2163e5db939c34587791. 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/TCADR1881741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53c750aec641ede32e995ef51b032dbb27d19d924a853d5ab48e76d29d70cf5. 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/TCADR1881743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f046104f4eeec1c479eefb383c3ae3c0c1db1c91514fde171f03cba0117179e. 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/TCADR1881746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587613cfadef38c92ecb0e25a772028bf5dce9f46dc54395a8ac6760bf18186d. 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/TCADR1881748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194092385902300a5c766b0abb27d8d60791c7bd997c1818a0671a87b0dee4d5. 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/TCADR1881749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d2bfd03b6af1e3c9625b730e15042fa7a631363448064a5ee54ec41c0044774. 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/TCADR1881751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b538da106cb0cea6c810553684e59645b07cb4639aa0dc9856524097bcfb0d. 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/TCADR1881752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4ed4a9e403fe8f5415433fbc4b2876bc7c9ac12fb97c6ba08ca6eaaaec760eb. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USHM81045903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db2454e1a1e12dda871ae6ae2fb97b9ad1678b3c15b77d943800a6545ebbb27. 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/QZNJY2358324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4faa746c98e358637136548c222ae6970946eae7739a17ebc80bc27a7ac0a85. 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/QMGR32069028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e3e0755e541073028c6188182b7857410f09663ee60dd6bd809e665c5802493. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QMGR32047635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdcaf32e40e8662f1e91799e0e4fa284520f23243ab55831e5d2def28721e74. 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/TCADT1848497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e836be0d630fe3e5c4cdc86fd995232967a09199f74605128f061d8648e449. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZQAY2386684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd14d82fc0fd4651165e2b030e8b0804f7ebe0362269a145f9cfae10b43e79e1. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZHN42514453.