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 0xee6b175838e244657d953d70096d9299e1897dd915b3b6e309ce3678cd682d18. 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/a72b0cef-20b3-4a3b-9425-2d078bddc624.json and https://artists.proofprofile.net/proofs/artist/a72b0cef-20b3-4a3b-9425-2d078bddc624.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 0x4a38da6132b31038f0707dd87f88bf5086e7f76cc7aeb1364d096613371a6c32. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GXHAF2599516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9f32c6a8bd46e7832f2ca8d13d35979fdb8fe2e1207308152d0c5e2fa4eb16. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GXHAF2599517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584c4f31275028ec90b3530a63af2e0bbe9695545af3c762624bb736a031b741. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXHAF2599518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9510aa8a376c56caaaf414dad400894dc7ceec313bd0fd741fc14a8afc16227. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXHAF2599519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fc869a395adbda2562591a0b28111cfb7cd754a525c81d211be5a64c49ea3a. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GXHAF2599520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x909e6d4e5346b147128b171777e2552ad3b765f38dbeca748bfccb257d0d0aba. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GXHAF2599521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eb9b7bff0a31f4c92fee59840413e79644e7309e284a68cd922cd0e89457b6. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/GXHAF2599522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x420ecffdec97a50ca877b4c799fb9e368044a6226134d7bf422d66503927c402. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GXHAF2599523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87a2ee42fafb2b272c5a02b26675d250187effbb49a03e68e89807f90ab5176. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/GXHAF2599524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd4e97de25d274247af3c9ae72c6c84df6062966ffcb9ba21e6e57b2e0bf929d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXHAF2599525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd187bdae516a9bc61da735789aabdb54c0a78011934b1cf34ea66484c18f7179. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXHAF2599526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x860aba12f53ef450d1e807fcb895282b0ce76be1c9afff9689c553f50715088a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GXHAF2599527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c042fdca5193fec6982754d55cf38c81cc6b61f3afd4e1fe3c89308a8575080. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/GXHAF2599528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e8981b6a2b94f23a38239affadce8758f6aa3922976f3462fbf6760ce0195d. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXHAF2599529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c7066d3737abce127415764410ed27f5884bddf31a2edee2d3e4707aaabc93. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/GXHAF2599530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb776e93c6e15b2b33925eca33316b143e305533a185a84f0ad46967d6dd8e557. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/GXHAF2599531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b3c08fb3e813d8a36dcacb4fe2ebfddf620e16ddad1493c4276c4e13bbab3df. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GXHAF2599532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c456ad4287eb7985a461db09eceddbc31ffabb7a85fe70aa05e825e2aaa06b. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:41:34Z), 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/GXHAF2599533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d4414d3e45e624cc9d2212985a7f92821e1cb401e2efdf88ccd043948cd6dc. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GXHAF2599534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x880ee4ac2dcf733e3902b80520d95fdaa932ed0a4180e4cb1ccc9d03bdac750a. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GXHAF2599535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4e875da76a418997665df001a1bf2f610ee0f4b54b9238d872771435a95c03. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GXHAF2599536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6958c74debb7c8977d6f1ff426c723cb95341342db66c2098cd8b3e97136bf0. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:32:06Z), 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/GXHAF2599537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f0a3ed5341d28fe0b86fdf1def5d04b3efeed1b4955e9aeaae371c1f7f6564. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GXHAF2599538.