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 0xf3208223d9e6214b9911386586f70d2a72ebcaa0398568bf47a104917dba8a3a. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4a97bced-18bd-4446-b501-8411f1279ebc.json and https://artists.proofprofile.net/proofs/artist/4a97bced-18bd-4446-b501-8411f1279ebc.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 0x5bb5109e0e500932d9ecb211fa9f757d519156f4637f13cedb214c8048f80b5b. 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/QZWFR2383757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef36faba9da2af81758a525656ebaad7ba0f9083c52c7ee1f5c90c389fb4e018. 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/QZWFR2383758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e59db714bcdff1b2f7797a8d4cacd205ead924b552eea9b2426de15468c0d57. 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/QZWFR2383759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2812b140b8d3f16837458c01d12ba5c29a515707b8201f836b939672a3b4635. 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/QZWFR2383764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8f485429e06c7a3a695add8dd7540c20abc961c0063f4e7ecec11955719aa7. 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/QZTAW2412840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7215bdf656a612bc516f1d86e8da3b2a358689ff6c73b0d80fff7ec10838af7b. 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/QZHN92432505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255e99edc7bd74913ac80c2464ca11c9c100641e8d3ae82a4f8ac4746c00b694. 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/QZWFM2384105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4658224c81ff8e17c872f1c27dc80279a4ba15c8a7626f42b3f9be72bded62. 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/QZWFM2384106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417f67b0836e67f1ba1804e0473fb2f405dac11d14d5b8ad3f8181a502bf7949. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZWFM2384110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae554fc80e790f44464be04ba5f0a8dd43b568a54294f99ee3574aadd975ba9f. 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/QZWFL2338604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaac8c96a8aec1eddcfb1f37cba74824edd129aba4b8d794c9a18c7ea79cd73d. 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/QZWFM2384113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755353839ee51edf0ced74afdd1ff4226a670c217179b3af0ce45304dbab40d2. 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/QZNWV2378630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c60711cfe7f68bee9eaa204a6742258172bacc40f0e57ca5a6efa1b08731d96. 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/QZNWR2177519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7974cb165fbfd4806615b88cc71d0f6d5fcfb97b4a40bfd2dc597e94b85d69c0. 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/QZRP52548291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ff25e34a13a77945268b9c6d154a365e595ddf0dd7c7f1782842d7d59a2576. 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/QZRP52548292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31ba42015eb27f0c99f42a2f950411b77196c968b6176737839cbf8d859c7787. 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/QZRP52548295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60480ca46158692ee1a138be03f2f42d8408c98f320ac09320c10583ea396c07. 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/QZRP52548297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8437e12f317cc619dfdcf7a8155aed8d11719a9a8cfc2f6ba2aece3759ad0c33. 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/QZRP52548298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ccfd05922814684a788cbcd88829e9d212d3b8a22e02abf2b92ddefc9afa647. 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/QZRP52548299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5bbf3fb732dde36b09a08675a0cbba0116faf6b1cf267b7f54771d9177bcf8. 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/QZRP52548300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9483e1c3e5b52cd520414617d24dec82d2f7eccff0e60d28ecb3c2b97e7dd42. 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/QZRP52548302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903b2bd85fc2f7bf55ca6f33dbc6499c1956b5a06b16019750eebd6e9b3bd66b. 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/QZRP52514660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f5b613bae34cde5846b9e78f09fb87be7fa06467432ea5e24748cd7be6ffae1. 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/QZHN62543993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20d24b5f4eecd97dabb5c194b4633562d6eafb7276ebf5ed5f447347e171d7f. 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/QZHN62543994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x701a6d822be15f7a37b52a378aedd5d0bf7a14135b884de46c9d6ed86834d23e. 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/QZHN62543995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa310fd2a7d56df2b03224ad2bcadb8bba000c292a845b98f37fd0c9413f9adf7. Chain 2 (Bitcoin): anchored in block 956970 (2026-07-07T00:37:51Z), 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/QZFYY2113427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x979638e4806e154a8a1ccee61ae0a30d057bd577ea18e5e9451829de55ccc548. 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/QZFZ22518772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e3635feade181fe52314f605e8591737825313dafa03d90ffb257657b15d9c. 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/QZFZ22518773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d676d717dea29ffac0ebee9f81345ada1af3424f9364dc376b31b92e205717. 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/QZS652159954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63763092c45ec073ef9aec2c84bbbfa478b39343ec21658581d1b2fdb858fd2. 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/QZHZD2174999.