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 0xb568cbe5f06903f14e11e29becbb041e1d4f2c890f45d7bcf9785fa65f8d5403. Chain 2 (Bitcoin): anchored in block 953997 (2026-06-16T20:07:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1bba2d94-75e6-4f78-ac10-d2ca633a64ca.json and https://artists.proofprofile.net/proofs/artist/1bba2d94-75e6-4f78-ac10-d2ca633a64ca.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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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 0x2adc84ae33f8d209eefa544531fc7b1c4738473bc2986d1b264c617a83a0f59b. 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/NOX9X3779804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695e81969fc2e15fb5a21624107cfbc6b1d80e77e34a6c694d583f06d33d6170. 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/NOX9X3779810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383346e1e2c1a82c13605afba6912bc583445767e52bd10789859919060d259b. 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/NOX9X3990802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc3af30e3c4dc8a8eb7762699636b3ccd010775533fb17f66d8b0eee43d610c. 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/NOX9X3990803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7190a4a38edc4583de31455e87af80be05d75a8195fa18b4b587fc9ec67c1e93. 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/NOX9X3990805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8db193e8e508c3473c1cd94308a5fc1616b88a3dba5cfe5deda2e93c8a92fc83. 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/NOX9X3990808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbab0f09def0e261e01d92f324b2ce8d3c620ae74957cacc84d20e5f1d53fee8c. 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/NOX9X3990809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c87737884411516e25a20912d276d9fa6ca62667e72f19f59f6720a5dfb2fdb. 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/NOX9X3990810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6392cc239747d5bcf19538f68f62f0e3e524a67f241fc69905e51494b5008fbb. 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/NOX9X3990811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c8920e8c82d2cbae8619595b79c58fa8d58b875a62b1e1d934943a5e0a7468. 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/NOX9X3990812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b535459c1053ee09b3384c66e2bf8c4cd6c29684b97f0c8d513465e5276c60. 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/NOX9X3990814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02c57276d69c31a376ebee3c2c1e60473df89698178ca4cb49b13eaa2ae10e4c. 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/NOX9X3990815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe4b729f0145f59542658646d0f1218b565360153495538af153d29001fbaea. 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/NOX9X3990819.