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 0x3884e023827d735b46cacc33814fe607f8be33d5b4d64d9a01543af77e62bab6. 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/494e98a0-0e4e-42dc-b80a-0738acf7d35f.json and https://artists.proofprofile.net/proofs/artist/494e98a0-0e4e-42dc-b80a-0738acf7d35f.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 0x7c1143eeabc5a0aa0a830d7e88cb46c258d1a1c22bc6c069015834bee479863a. 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/INL231909943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97489fcda5ccd498486ff4511c04ae1b1b7e0fd95424e186f2a10b2af934547. 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/FRX202501539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeec8a2bb3715e15a0d11c209916c08e7cd3a181cd83a124937013a72e7d22eb. 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/FR96X2533522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dcc853de72ccff9aa369a8a13509beab1634168de84c005b7ad1a3b3d2b610. 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/FR96X2543576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda375d508d5180683e9d3a012eb34b5044824f8fe516c00b7b39d38f6177b4d1. 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/INT502503221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a0a3b31420444c931a74d513c70186319b97b20a1081eddf5cb564ac386f53c. 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/FR59R2594244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63b03c702cdf72a1c968ced01a91c42dbba1c1c305ab2d8cdf87fe2cd8a078c. 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/INS182501184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b3f710adf15eca792c5feb7cc4d9dbcfdd8004b87d79c9449e12958b2299f77. 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/INT502501042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77efee4808e262adc14e77bee70db595b3afe3f5ac060bcf83319be3a51724dd. 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/ING642502544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e0136b19c8e36e841b99e275d316d6bc4aede7db91ba4587596a98d4a6cf1ba. 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/ING642502485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11bb660f06735367309bc2108036041865a89f2f7a4eba4d522b7c895a01603c. 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/DGA0M2457007.