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 0x98f572878e7804a812c84600c585167f8decdd7aa7542fa895fe4fa9783df5c5. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f1c4b4fd-3572-4a48-ae4f-e80ec3e27887.json and https://artists.proofprofile.net/proofs/artist/f1c4b4fd-3572-4a48-ae4f-e80ec3e27887.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 0x69c62f536c9e22e458d2250e1c3fc0e4b8a84da1dfa3973d4cba97e9645aad9d. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFG2316330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x954c8110de304fcac0cbefb2b89c460695f40276eacdf3a940403b384488cd8a. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:06:43Z), 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/QZWFS2315942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1333ce8a2168ddbb329b21a44e68f8b0f298f4b0d0fb871bf5804328dd50ef. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZFZ72468958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb584d558bc0d66a166d036fa67dd296119f6fe754e24c9fb1be6ae4ecf66db. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6J2427313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc96be3dd4a0662e98670ab8f68784cf840b04306d316f27f5b75b51d107bb04. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZK6F2480432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021525ad905879922fd0f7ffc110e81d6d9bcb6364a74ae891e91ebf2b0ee17b. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZMEM2490250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be244704f8e22f179acc928d7e6a19af4ee208bca5863b8b67ecb83051835a1. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZTAS2447957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc92bad6e9d2e75f1afbf15054fd01e1fb911fd94ac5409b02039c583963439. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZZ7M2472847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c73361ccc34f5ed9b9e8b62d6cbce9984f3f24dbc8211564b1893335ff0ea0. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZES92592973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71196afbfa3101e22705411e4c77366d2bf7da64874a74cffe8e162c2339760c. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZK6N2593494.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4390f20a338964e8ce894c0af6f8521839020079db0db2f3ad9d31c762d78ad2. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZRP42560253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04987b314c383ae01a65e246712b2722a852b8922baba6812dbaf9af17aa43a3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZTAZ2503312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd8cda0c70a417a0c334efe0a6b38a06747dd1d7294da24f36095984bfc79c2. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZTB62501421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x750b10a4a65b4e5f216ff6a080eb8b9dd87dcd676c61814ef107c2287fdba6c8. 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/QZRP52425190.