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 0x2812e28f20ae2c71a1bfce90fe0561cf64f0bf9495290b23e8333449ba200a13. Chain 2 (Bitcoin): anchored in block 953773 (2026-06-15T10:40:45Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c47a88c6-6ecc-4e07-a34e-bbf5aa8ca6e2.json and https://artists.proofprofile.net/proofs/artist/c47a88c6-6ecc-4e07-a34e-bbf5aa8ca6e2.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 0x14368647a1d84057244e51a3b2b51737aaddcb64b59ecba92b18dc3577c4cc56. 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/US83Z2147103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308378273fe243e73facbb21b145ab1f1f40dfb0e5805cb56e1f8482d2e90f08. 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/US83Z2147105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x291d673fa64953d30894e4e829fbc1728dba033fa01e99c7552833b81fa1f725. 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/US83Z2147108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56027e1d528f88a773b1fa65ce877d1cd24a841c794b93d8643b7071787e459. 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/US83Z2147113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaed68bce85b25189093a188192769a0db1b6ae01733417ac3f98e817415b403. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UKU932426156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926a655eaae591f552dcdc4761ada0e4e51adead965a4546b966ac369558dce4. 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/US83Z2491048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7007d42c4e88c5c78ddd812eb39bfd3aef341f2e4b3f02670be47ff879aa470a. 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/US83Z2487236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9cfb497aa89cb14a9c9cdf027050039338a5c6f2b8631eac168869c91b8630. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/US83Z2460279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9cfb497aa89cb14a9c9cdf027050039338a5c6f2b8631eac168869c91b8630. 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/US83Z2460279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1fcf8c7da9ce9481374992b49ae42947c47ddce7075dfc128451e4522dd18b. 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/UKU932322372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742e4ec9ef2208d18bae4e81b62f2b92a915541d69d807caa284c7e2f5b87402. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:33:44Z), 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/UKU932322373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e68cffc44fea4781fabc39559bae8489557f2f6654d62cfaba751ab081811e0. 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/US83Z2498821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2e9c68777186c4bea5d8a8879d8d3fe509615c73ac8f28417d27b17fc8e570a. 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/DEH742100497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40638a9439e2ba2bbc7ea4503144d3e0983221135042c68b40abf6384774aac5. 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/DEH742100506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46088630fd875a6a1c0bdde4d8bb00597562eb5d6ee4f9e0216011b78206d83a. 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/US83Z2343024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83244d15b801263d94dff8c6ceb7bcda8688b1444332739b86d98933bf716b56. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/US83Z2475868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4498170b794179957b9837df59105ee1cb9b20d50ebb9fe27137f0164fad825. 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/US83Z2485194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5ace9ec14b9b2619202d36c82ec589091ae4da7f4e1ab20b972703cb92a3ca. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/CA5KR0033844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc39a7367d6953ad864a72958931d515b3231711c833cf47819477c51ea10635e. 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/CA5KR0033842.