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 0xc8e175a1485fe7c08f4aa20fe57060360e65322b3cb7477c20c3bb4f966990d6. 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/1cb76691-66cf-4549-acd6-7d1bfb2e4fc4.json and https://artists.proofprofile.net/proofs/artist/1cb76691-66cf-4549-acd6-7d1bfb2e4fc4.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 0x402b46655ed889956ba2a6f7af4e7d22f8b12601ec1550c89a24b64316ae3e27. 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/QZHN42479517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326ced698fd56678b423f5bde37ed43aaf619abc98caddca14c85a8eb79a9adb. 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/QZWFP2301502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e33fb164d3430f7604b4deed817ea286f69c2c66b75fdfd8b1dd2de8890eea5. 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/QZES62453211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4274efce5c43cc0abe0957160a4aec9327f626ff2386e01ca936d14e2f062244. 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/QZHN42479518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec238acfc51c068f11aeabd3e6f738f7d936c1eaf89d1e4224ad3f1ac791a8f. 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/QZHN42479519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6b1b0daccb34ec7e322c930e5a2ead2b6b34e30a209830bfc6579e2c299d3b. 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/QZHN42479523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03416cf2cdc21826e87dec61fdcc9b829ff376ac3e70838a89596839723b293b. 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/QZHN42479524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3208764e2afd8a5957886421aed38213abd02b4091705993bdd393500518eec. 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/QZHN42479525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76addebde2dcc6e7a1ff666dee55b8ba615b1029566e439cd36fe3867907141d. 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/QZDA52311428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa5c0bca5a1c3f38ca156deda70e330c285a3c3bfaa1adae71958169c86a61e9. 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/QZDA52311429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e3ce55d14e45514d92f00a92ba2895aa8e3b242bc6eb18ec85368bc4cba7964. 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/QZDA52311430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8be3e0c536a579f32eb5548fcfbf8c259008c72ad1a7f3bbde9e0d11870bf765. 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/QZDA52311432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35139371d4a58569d5eed6d17c0a6967a82b2ff8fa86607a6ed70114d6ed0d1b. 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/QZDA52311433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0f072efd9d8f67bab708d6a8491c3d563b8fb106229735fe28b97f98a1f731. 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/QZNWR2227486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3c8f45cf4fa4482a6edcba03ae777516b8de380744a0075cee0545dd7e5af1. 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/QZPLR2199296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9036a9432a649330f7a7e02a183dcbc54b64abaf489cdef72d17c3cb146a95c8. 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/QZPLR2199301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd21eeb2bbb4047fe34d20be0ea821fc7002ab10e108a75a4a77d29afe756186. 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/QZPLR2199303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf57712a1bc588e84e788a99ed95239fef074b1f8c0177e1038e7ad1f139984. 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/QZK6G2133195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e4e1e950e4fbd12a3770d8bf0ff064e31919f4773959759e866543286ca15a. 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/QZK6G2133197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499897a66bfd408b57e78017ce395c59345cccf989b6299ac3c3b130a2867f18. 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/QZK6G2133202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ddab52b588fd267a1f652f641af221adf6148bf2c32ea3a87b335c6caacd9e. 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/QZK6G2133204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2da881f3b6d2f92711ce7228221910df1cea55d650a7475f4c9aa1d918588ca. 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/QZK6F2477237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da025860b374947a2f6c0809ef40dd174d9738aee58bfcf8683233744f14ecb. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/QZK6F2477229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5ed1adfcdebe5c9c337d93583533e82ada2656acb7de2cab3ed5faf8969a8c2. 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/QZK6Q2450164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec157ed2bbccdb5ffb804a9cd5d2b061dd923d3876d8510ae9a9e7db7e05ffa6. 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/QZK6Q2426853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e33fb164d3430f7604b4deed817ea286f69c2c66b75fdfd8b1dd2de8890eea5. 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/QZES62453211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda040318a05b80a6cd551debe774bedfd5b3ff395afdf469e98cf4e082df770e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZDA72460187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eec8b818be4dc1bb9bb0ada62168139b50f678c5bc37275369aa233f64ac54d. 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/QZFZ42428894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326ced698fd56678b423f5bde37ed43aaf619abc98caddca14c85a8eb79a9adb. 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/QZWFP2301502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaaa7ab759d5635e69e62eb5f7238bcfb923cd83de407cd07066d590307b897e. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:58:04Z), 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/AUMEV2370238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ce00301ae4e82709e50d255967a5bb55608ef84c022763ba03e4fa75607fb4. 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/AUMEV2368536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce5e9cefd4b4a5f2751036665ea381fb3c599c74888a04e83e8a4dbacae96ff8. 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/QZHN32338195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddd5fa0fd69cc780ed11219919ddce853dc72aeb6091ee4a4b065119daaacd9. 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/QM24S2300351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5193b92727ec3582057f1bc059aac67ef913e7134b88f0ac3c27af56e453fae8. 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/QM24S2202015.