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 0xa182a8a2c01de6bb7e056c548a219347349c37201b21fb74a6cd047813029caf. Chain 2 (Bitcoin): anchored in block 953713 (2026-06-15T00:33:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7fd550d8-0468-4330-b367-813e986aec54.json and https://artists.proofprofile.net/proofs/artist/7fd550d8-0468-4330-b367-813e986aec54.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 0xefcc1c165b4a43ffb5b6d6c715ea4331a24b7f43b04082ae5f25c5b2b611e27d. 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/USHM21630187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x244048b70ff9ec9bd56a64c5d6efb22fb4f4ff3c584ae83eceb0641ed9b9eaab. 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/USHM21630188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46dcb39677fe1328efbee076a690a44a1bfc7c27122fdeca6fc0c21a41438265. 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/USHM21630189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698fa4a02f443ce41217b77f974ebc37db95c3e4a23bc5aaa313eacd7408179a. 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/USHM21630191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af07994b445197c5671ed7b630d74c40bf81c77acb28c54ce057e9beb51163a. 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/USHM21630192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdbaa7b211028bb137663e0ef9888b273818515edcc25e7bb1bafd98b2ba128. 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/USHM21630194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9073f7b1ad2ac2f9225f7966210816e64f916c57d56bc5bad62cc6dd37978fe3. 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/USHM21630196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2a5bbfc692c9e9efffdaf0cd4fae492de583e49949d4b7d06aa5b991a10ab8. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/USHM21630186.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2107505f0cf6f469a1fc01bc2acfb78b5efe3896ae55eb588e19a7b87941de41. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USHM21630190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x913748d75482c1a829f895391781e71befc03a4294e43edfd023155f16b138e7. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USHM21630193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7804f1f4b7161331cc44e46aa0c941983fc5a7d0e3c4bbf7964145f44d46c4a1. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USHM21630195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b4a0d979813a21ef715ee3dd2a2f64d72ee764bad81bf7e8a388c827a0ccfbc. 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/USCGH2465724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0d511df4da68ac6187c64a3db1fa41650ab6174b4e45cbbf7c50099570bad5. 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/USCGH2465725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e39955660e7b236d2998a77120f1c68c1c6299885fe1a57121b6f9823b6f12. 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/USCGH2465726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16463e8e1816ed4edb22b2f6861d62b095e69922c53179d156c4da5360da3806. 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/USCGH2465727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f55630f104490e88d0205ae92ed59cb7f4164855f6821780ca0a2fb953fa68a. 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/USCGH2465729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e95783f3717f61b95dc9a5b980b84803c3edc01df8a97b8f15e2949513486a. 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/USCGH2465734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f582a910897c4ba4a98bd1c2552c730986be7170bb714d0343577585b0e6a76. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/USCGH2465728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dcd4b296e259d80ecdcfbb3b3810fed729eac1bd1620a0826b5574fb136af7. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USCGH2465730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd7f3f5ed17184664202f50de9dd21dd2fa4679cdef0a8c9470ddf5f53f72144. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USCGH2465731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f809e1d0e6bc2079f877516f5572f208eefc13ef81a6b00f82a814bb633822. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/USCGH2465732.
End of My Kingdom (Remix 2013) [Bonus Track]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93206337db4faae7097de2e29cc679f096f16a09e852c55a2164d69009e4fc95. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/USCGH2465735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c72cd195ba9fcb58e6afda56d27f33cad9cbc5d7958271ab54f1d4aa7dd5155. 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/USCGH2465697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db21daba17268c0950865de07b207c9331b382f5d328d3f627c20817e718d41. 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/USCGH2465698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe277312416528503d3d6d0e6f321478be16bb37f3f307aaa4d649ec72febcfb4. 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/USCGH2465705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d630e0603d88c8c8a1f310495fa07a4c23b96a076df4936d370818b9b2849a. 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/USCGH2465471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8068422449c5bb0681796a940d0bd2e07077affc2868f2c9811f6a1ce391a616. 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/USCGH2465474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dec8a34c20bb4413e8ee82093ad992174c31abc0723cd47726fa9692cedfca3. Chain 2 (Bitcoin): anchored in block 960487 (2026-08-01T00:15:43Z), 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/USCGH2465472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b2d59bc2835e31db28ebec40e5fb0cb93961c30c0a0bfba3dc51e1164e8b1f. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/USCGH2465473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10f87005778f0d60cb2c8537baff6c74d449bce2fa99fd769c0a3e982e8bb2e5. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USCGH2465476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65609234fdcd839dacaa95d69c48eb8d61bb21be3586a317659dfa8de81479ca. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USCGH2465479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6ed4b420c679c25a0f614d0821c09b27a99f1c9eb86fa0249c904e3d4fbf5b3. 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/USCGH2465720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41621bb4b5d76600c1ef1e34f5e0273cbb19b2275ef9a5a0a8b5aa6333eca1db. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/USCGH2465721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e448d5617848f8884447ded2e9bd3134e61e6a596257881f308cf703d3e9d56. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/USCGH2465722.