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 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 0x755079ed856be234095a7862297202b106336028a3219eb0d9cefe467a375248. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e6d7694f-be46-4e82-b257-4b210b482237.json and https://artists.proofprofile.net/proofs/artist/e6d7694f-be46-4e82-b257-4b210b482237.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 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 0xad572cf8576a26dc99ec13cdc3c6d00fdb30c00d1c0878398820c12b58131166. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/QZ3AK2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86c47e4996abcdff17d063957402863e73c6ada19751c2589c9cfd6ec945cfdb. Chain 2 (Bitcoin): anchored in block 960153 (2026-07-29T21:57:12Z), 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/QZ3AK2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3426d8ffa7aeb47a6d93b6d96709b0074d3361dcdadaa6fb4991d1eb029e90f5. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZ3AK2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32735419c4703b2a5ab34d24edd78ec7b424a0b5e637ae9a9688e4bb84ee8073. 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/QZ3AK2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995e2c30761c1bd9e5df88350a1d22ab9591728266f8896c9515475606e2bbd9. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZ3AK2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0429a030bd67506ce325527d7e5ff2a81878f020f59e3f57fca6e669f7da4bbe. 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/QZ3AK2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6fe49f1f150cd588cc9b53ed7d09c353d04e09baa2fc881821fdc9b1ef5a49. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/QZ3AK2000008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcfa5e49d2510632c9b7b708419e5473b0658f3677dc6bc6ef65e5d0f0616976. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/QZ3AK2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd84b7caa382d1a8c7867257ce5a03297df298e06dd2b9347f9eae17abae21a90. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/QZ3AK2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6101e8c554585cd9d8ba50f56727689ffc3c077a87803cf860aec829b1a03ac2. Chain 2 (Bitcoin): anchored in block 960419 (2026-07-31T15:20:33Z), 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/USCGH1766704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d180a03a81922120771bf6ec91f3aa2d633e0a6d92b11ca74f783446337475. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USCGH1766705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96343522a10be851a1aa24430b68b43b7f0c8b2bc4c5ea16941bfe1df517a08f. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USCGH1766706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb01dc43ab3b59fbf8001a63f9a08477bef91a56dafc7eb4cb4df1852b3a50d8. 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/USCGH1766708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd6937d584f8a152fefee76bcb44287d5636aab1db43308beb20d831975686b5. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/USCGJ1694908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7312b15051f1171788f079b5934c41b6f4f9f1a1c568989c647f9e15e8efd32e. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGJ1694914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24c426820a42dc80444b5990624f3b4d71b6c90e7af1feb4a81d2e63f56cea09. 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/USCGJ1694916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ebccebee72d2b79b35c9801598f822d5a66d227e0a76861af5cc07f07f5c737. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/USHM91251208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b89e92889a91c3e5c4c45ba0cb22a725c59f91dee5dc9c8debad9ae46de7c1. 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/USHM91251209.
Mommas Don't Let Your Babies Grow Up to Be Cowboys
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1b293f65dc0dcc20be933b2403381d9e34946b8e181db27c84cbef35388643. 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/USHM91251210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7a89376b5645b65ac9ffa9627066ec5b9a4f5ada3a2bab63b7e053b8714c9f. 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/USHM91251211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d25f462111efcb9e62dafffa6d7110d995c70780958d3c5e6ed971a6606058. 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/USHM91251213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c99a7c24ff89de8e38d0ce94b6d640e510038a06ef5bbf7a3406e702e84ecbb. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USHM91251214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc9b58d3d121b82a94ce5cfeb6bc4dd0d6667f223a0acf88f8e17626731de38. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/USHM91251216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca57ff882f6b58029b63917d6ed7701feb5efc33cc2bf5cacb01c9be3fa853b4. 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/QZ3AK2500001.
Jam In The Van - Bart Budwig (Live Session, Los Angeles, CA, 2020)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2d86853f4eeda7ba6d185f7a70f905530af6c301022c1d5747471ff8a7f8cd2. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USE831543275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7987354f709a582520d13b92ffa38671ae895f740d1092a638d282a6d2f9b5f3. 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/USE831543276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0959804a04ef73f3d49bba047218379e6929be3684adf47066ecb3d236b1984a. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USE831543277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3453b4ef6aaed2578be80fa2ae7c50dca56fdda3519f84cc926b61156bb49023. 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/USE831543279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca8c4635db75abbe78a7019aaa0da9faa482da8fe691360aaf3a2189152dabe. 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/USE831543282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9befebfe0c87e4ef9627758b85d4cfd93956859eae252f4d58445c6bd84aaca2. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/USE831543284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aab3c278a0037f5abc8068e0beb9eb43c0e0bd4c0760cf2fed9f31722c281a0. 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/USE831543286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc693a2a3a252481a6ba575d9af44521b4233aa56bad5df591c279efdbdd1cc. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/USE831543287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e513d97d7fb1fbc759eb3d25a04aa740574b77ac81aa6fdcfee75f7f705f6b. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USVJJ2425101.