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 0xc5ed841c90fd90417141b0df6ce6a48eda09c50f9edf50efc4e95853a5256758. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fe3e5619-a884-4ee9-88d8-723d8cb96562.json and https://artists.proofprofile.net/proofs/artist/fe3e5619-a884-4ee9-88d8-723d8cb96562.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 0x40d20f88b7a5e39842a1a70dc11274f58fa22f9e20fde09126d08ab3c338c699. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:22:26Z), 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/ITG271600068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9af090654c6da112dc9183ecf899647f9d73705a4a31fc287ac74239eb4e703f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ITG271600066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c55c1c0617e7339bc0728029aad791c2a9c0d9eb8e58a3f3798bb671c98cc8. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ITG271600069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebead1a1246c6e6359936c20ba567b3e01535812b603db6ce294f344ff2e4bd5. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ITG271600070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e9c159cf6ba474f07b205636295dd6850e9544dec250d1c5e436fcf2c9cec2. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ITG271600071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1bcfac601dd8e14ae5c708d07e8e4df3472eb4fc7d4aae17a6ecc1da222659. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:41:51Z), 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/ITG271600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dec44e1d00abb8feada053a5b23493f3dd97f6de0f7892fdd50e00cbe94d8a9. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:17:44Z), 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/ITG271600073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7fdbbf2160163a544e0a5ac10c60c8370bb33cfa944fc356f4afb57ad06c14. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITG271600074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dd4ac7f6e12e91a06d76c7d1c5283c2af23867ac27343a5d5d30ed5fe73b041. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ITG271800946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfa00db723fbf69182f4beb84a437b89139cee6096a5df2840b78984aca91956. 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/ITG271800948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6821741ba770db5d11ca250d335faac049f956c9c91c4f245c1dee0949a0f5. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ITG271800949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33eedff167ad3d43b52a52783d61537bf0ec9c8356d4c2b97f3c005ca4abc139. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/ITG271800950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f5640ce4e2fd438841d92b1c54783ac8603e832bca4fa702002aa6a2824e487. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T16:57:59Z), 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/ITG271800953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b18829a9e131a4f0671b341dbbd813a90dfc789482198ee3ee6b399fbf542f. 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/ITG271800954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee0dfc4085350dc485d626bffef5d8241fe3b7483d77871c31145dfeb9b3557. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/ITG271800956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f77438e0efdaa076c31e492aaf2841f24345fd9428c4adb67c88a1e28d046a4. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ITG272200819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb19dfdf176bfac3d5f546cd239abc910dbddb4638049a09adaa124290475f8a. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ITG272200820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7f359c1269fbe94be011fe0884ccf02cda03dfec36f1f3ce2637226fd6d428f. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITG272200821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35e92b0ef0d15c79d8ac4563c9b6cb3ee493c2a8c5837b7aa999494b78ddf392. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ITG272200822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e66d1f88a581f11c0c2731b36e22f7880dbfe0d46c4f193455b8ca794b9879. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITG272200823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2652c2fe0ab8fb238ed71532822e73e1fb75289e8904aefb6893c3513e8d2d0c. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:41:37Z), 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/ITG272200824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb28d5df6256b90766e7ef4c889f4abecc613157a3b0900dd8a4884bf7ffb01e. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/ITG272200828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34132ba705f2135c865696b4613fe42c8cf90b5c839d2e2447cfdc3ca08991c. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:02Z), 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/ITG272200829.