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 0x4e683a710a50f4a342fa089bfffd1a4192f715eb8be8d5fddf69fdf4ab652a92. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f566057b-c1d7-4ba7-8373-4671962d2996.json and https://artists.proofprofile.net/proofs/artist/f566057b-c1d7-4ba7-8373-4671962d2996.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 0x1b8d258a32a1bf87aced9657aa6db1a21b7bf6fdd1179bee1118b83c1bbf0de7. 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/QZNWS2475087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56d3e4fb3220e829808770482c380d9637ca0495029b4bb9085e0cd8d67efdc. 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/CA5KR2251262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ebd1b05c31ca70369c6bc361ad8c83721e08efb72789ffb915fd54de6337040. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/CA5KR2251264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4448766fe48c531159ab2e5d59162dd02644f6362b01451b7008c0b78539a2b7. 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/CA5KR2251266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x195b96a7a0439016424f45c1dc43b4d159d898b8f0a255d1d9f4c80870b9ab2e. 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/CA5KR2251267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ba694af98e7ef4a432d51409d8c74229c6012bafb5da44c310e54c39fac9ff8. 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/CA5KR2251273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a74ed6b78cdc759edb6bc6a20c2a40751c3580d1a6ce7c1e21b979a189bc8cf. 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/QZFYZ2166542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f321a1f85d1b8b69151039a6bb08cd5609c4b6a7465e576679b4a0fbe20fbe. 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/QZFYZ2166548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58514c591ee72f112825c1b8cb8637035ce0e00a8649e62893878e3b9904801. 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/TCADY1860847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf44dbecdc746ff258eea250ca19b3c89b6472dc996baf4e3c0abf4ae1276b0f. 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/QZBAV1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x250d3f9ac69bee981a95e0511a989bdd3732058f046a91ccd0c4ae8906f02784. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZBAV1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9e5fbb64c6ad7e0c613f455b2bfc1cd983a3b831dfe3668eec7315b664253a. 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/QZBAV1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5e2fb992529268c0eb5b4891d2a1fe00fb1b56839ccc8313d833f7c0b0e8e4. 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/QZBAV1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1eab9bb1b1a768771937b3031c827f904d5525e8b29e13c43a107f1c6647f7a. 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/QZBAV1800017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163445cd4cd6834c96878bdf9215ab89b8528205206ea92dac752ef09db9091e. 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/QZBAV1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368f70ca678818a3cc47299a9bb247a04bdc5758fd72b5a8e3ad72aa570a34c1. 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/QZBAV1800016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213c52e639c622210479652edff30eceade8cd549a5b5fd0cc4d7fd4485b7107. 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/QZBAV1800015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4775c33d424e13b6109dc16929aa67eb9f773f7aaabf2508955928dc11629009. 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/QZHNC1912905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d4ee22ab9fe2ab7b971febc488ad45955050e1d1589c9d8177a8a7b0b8ff71. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZHNB1954756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8184c1f37aa440cedc8b80741f9f3c8597967b3d558c6eec6fa8dd0db5bd4ba5. 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/TCAEA1987566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x705a27d891ce3cbf18c6870806dda427f1668fb9bc64e31eff6a44027d6b87cd. 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/QZES62538815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec3c1ee23783c40279bb20a12be6e246748685954b9a66f5a3701bc1f499a7c. 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/QZJG52554924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddfd919744bf07985d0e98894c0a00c8c3aa313872f16ac7f3c47261a40be42. 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/QZJG52554926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d520dbf458b31e3c24cdb4098d3b316c680ac035f5fc3a4afd2d7c59f688261. 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/QZJG52554928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4308cfb2523d3b811450194e7e6fe54f7b4fd43886632143118d21e17b7f64c1. 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/QZJG52554931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63d240a186c00a27c8051a3c90fb39217e40843b8aaeaae7ea4d168c40a1740b. 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/QZJG52554933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bd3e69f23dcc16964d50cd910648645d92cd455f722bd86893686f6a81637aa. 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/QZJG52554934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6728658a944da84c087a20ad3bea8a89ac5bcb1e88e4be99c93f8f8344d649a4. 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/QZWFK2373632.