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 0xf0584fb0b2e253d2fa1b83c9f345e9698567d2370c407ca806859aa8bacc39fe. 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/ff7ebef7-8c3a-4cc8-b132-32d9d2cc3ad5.json and https://artists.proofprofile.net/proofs/artist/ff7ebef7-8c3a-4cc8-b132-32d9d2cc3ad5.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 0xdc17912ee19bc8628eb63976d3ee56cfdb8efefa0ae1dc61e6f21679118121b1. 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/ITND92000051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde159973dc80ab714062c8386eaad9ddb47fb0d7601ccda6a154a4785cda03be. 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/ITND92000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c8f9b76a245b659b2ffe6448810a08a216a1bea5bf909ad5e3488ad11726286. 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/ITND92000053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6e66ddae8ec6a21a3583e6fb2e1d16bde04645e60e63e49da0d8de642402de. 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/ITND92000054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc54dbfb4ea0302f81fd81a3a22decca6f497b612e1dbb42b13babf16ea21a55b. 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/ITND92000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bf4f6b51b0e70e98f2b82564d17cd9a0fbc2add678324a6cd9277154e56e87. 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/ITND92000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8520ac4857a631dd64d0e3e2947c2fd817cb59903c03a74e6be9e9ec124c53a. 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/ITND92000057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5753c12730c8dce52582e44ba991ee5c8f886bd1e13fad3e229e63dd216cc6b. 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/US38Y2411521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd791955b80ad14e366f2ef605d740a27b3998d23e64ad8024b56f3040499468d. 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/US38Y2409030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d679095c974352032747def277bef08f014fedcb264fb45b0553626bec0c26b. 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/US38Y2405987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c84e16558dd26f510ff617c4e21f8e9d7256b0a5875fd85fdd1b316515083f8. 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/ITNYH2300091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3c69c128f3f87e5815943d70c1ecad90071b83596cf86a02cf857ddb7e38dd. 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/QZK6J2033480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ea15e7aa08fba711d99a5480349eb5312a9060136eebcb753adc95723e81276. 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/ES71G2236388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa39579d33ad38f2fd931e9a3e09ce3c3ae0385e689d4134f5ac6f87b727238. 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/ES71G2325463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2f9590a28e71dbbbb911ea6757cef254c804caf00caaecdac1b6b1e4b4f2ff. 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/ES71G2317488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d196547f7eca0c0098a6dbc9574edf739cb8692cfdae61be711f99037792ad. 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/QZNWU2010271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc8991446037b810ffc0c23ac3790489f3ed270326af4cb4fd663b048a0a805d. 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/US38Y2311065.