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 0x1ab91416583da349e41a963dc70405b26d9471556defb3b835ab08e67668364e. 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/37016ce7-98ac-4145-8c61-950ad706fc56.json and https://artists.proofprofile.net/proofs/artist/37016ce7-98ac-4145-8c61-950ad706fc56.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 0xe14b7be6e29dae102fccdc7bf22f66e9c80312f375a7901ac986b2f9f4b9cb14. 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/QZYHM2424841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eb7be07e2334f5768ca8760add4ee66f7f3480bb237f77a53466fde356f9946. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZYHM2424843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4d3562333116eddfc69d48b77c24d424e8c975ee94b1b638f2ca468e599717. 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/QZYHM2424784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89eb68b95769dc7436c77ac378e08a40ce905b842263b22a66088799872f6f89. 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/QZYHM2422948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa667d845412713258c256e544ebfa5a8adf8d2f9357e71228e025e2ee8fb6c85. 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/QZYHM2422874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f89e9daab94c296719a26e5b479ab1d1b1d7955ce9a2ba567146bb3da2158f. 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/QZYHM2422875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd68c86cab256ade1d8776bad66a6d8ff46935f9e7f835ec9a61b26243b975359. 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/QZYHM2422873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d9039a084e84b6b66eafb6ba0a3753883aeeac3155670a80b25edf194a9d44. 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/QZYHM2422626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a63d677b2bfe1451eead0a5ac63319ecf10fc84cfc0ae85fc07fe19ecc2111. 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/QZYHM2416597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3e1faa05062205b759e9c84f78b8f3196bb8ca332b5827a4e9f142e2f3df0a5. 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/QZYHM2414157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55f27ab728f8f803c5ee59b84af1b9d3ae9d0a7bd7daf19575fb8a0c800a3d3b. 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/QZYHM2413044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb55564dbdedb020a275915fd4a66fabea826fda8bf5131a0f94e932e2b989eb. 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/QZYHM2413045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537fb5cb8b79fa3a77d4907b68b831fc262dbd55c227fd734e2d0d942125bdad. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZYHM2411773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb8933288cacd40258919a1463048fd9e674b04a686f858361a2b354a77bb6a5. 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/QZYHM2410061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59de14419b18a9f46712f8778ec67c29879506b6853c72903a193c35e97a446a. 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/QZYHM2501729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d3075e25870c404d134b083a77facc3c461f36a9c384bbc75965f89f8c2dab. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZYHM2500753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e55efd3e7d9f7da22b78963401e58f4ff8885a204cb25d64246eded796e683c. 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/QZYHM2500670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e08c5348f417e7014b428c2dd739ee88bb20cfcb8e86f3aa8652db7c429b3d. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZYHM2500472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595569dc8df95c1c613f082abcc9952f84b2589ccc2693cb35b308a36e14d0a8. 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/QZYHM2429433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f04e1148abc147460dec4fa4503215696b3c931b787958dc2c607943de31167. 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/QZYHM2429231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3978818d914818c5f4a642d32dd7fa991bb665cf75f5710e1df87e98fabaafb. 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/QZYHM2428880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21b48ef56eeaf78765fa6893b9e1696231a36abc8e847b37ef53b32f04aff3f9. 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/QZYHM2428043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13d41fc60f0adf123596d1830d4d10225e237388f9ed4c3b3169b8ae44fe49f1. 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/QZYHM2427796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124f74d6bca7ef57e78249fbf78a75b23092cf362cdd035932b4158a47ba0cbc. 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/QZYHM2427698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36bfdfb4e586eee244f69e9238bc9df2ed48d4bd4dda276f1822fdef541f5680. 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/QZYHM2427640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8c28c42c112af6a2d550abd07bd96d3c87e37a07df9039ec83b6ba08ebd1e2. 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/QZYHM2427472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c6113f981202c3138ac7166b9d2fb440752776135bb6ecf6abca6f52e5a254. 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/QZYHM2427146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d5c03d8c5fa7a3b03b5c184b49375c78a4749a29ee46e0e3df32ab64310f69b. 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/QZYHM2425649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd97619a039ebe72a47e2f562449d254510191cdedd1e0df7808bc543364a52. 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/QZYHM2425598.