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 0x6d9e3297a2556603d9384708941768a1635ceb8b0a13b3d0369222532bc4824c. 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/21899f1e-39ba-4110-b6de-2a71a7b2242a.json and https://artists.proofprofile.net/proofs/artist/21899f1e-39ba-4110-b6de-2a71a7b2242a.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 0x39e3383ab5a415812de6c3a5d54f257ac87bec08bdc443c583f72b082c0f1d28. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/US6R21365831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8337dbe3ac8990ec3c7adc10416aac135258de5cab9160c9a43c1c6245a2592. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/US6R21365834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5f9446fb55b0275910377907ceec0d89f58f0004b78e3c97d254368bd0b8f4. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/US6R21365835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b88ab7a61197622def20af074706ae3f1cb2b0db59b029ac10c12cd89bcd0a9. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/US6R21365837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267e108d24d69959eb55011d3d97d5617bbf30c31a9245301ab0043e73ec15b3. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/US6R21365839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09eebe03823c95e57faec67d0b078f53548ca5e8fd1e464b4ebc2099d26fbddd. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:28:41Z), 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/US6R21365840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08ebfe8d10f4ab15d8142350e901ce829527146d72c70669e625cb9e450267d. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:28:26Z), 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/US6R21365841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f96746cf5e87c24c955b1dd373068990c172c6e0a2004db7b2b9ebf01ad56bc. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PTVI11600123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72713c03449f255f3d2ba8b9d3d34fbbcaead0ae1500554a9b9db9dbc4822981. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PTVI11600132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45395e867a52f26a2cc5514a3776ffe6b250c029c734285a8c96c766f6eacbf0. 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/PTVI11600127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d586f7cbc4d9743d4b19933ca938cd52009dfac46c0fad9bde6b7bc07c0a4b0. 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/PTVI11600128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c30428f73eae5d1f5fbae003a2f3bbc8d942fbcb00565ff28fae188692f5107. 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/PTVI12200193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x623d6d0d1c998486dcd821092229466bf5f28c11d36f5c67cd62dc421f557c5b. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/PTVI12200194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0088ba3ee7c3557e8ed3723fb8160184d2c98990d3c2393358920a693bb52541. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/PTVI12200197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f1b23e6962a23ae0904359e4243c5be4c044c030ba4c765cecb8027cc7d45c. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/PTVI12200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ed4706e5c74d09f6336f96a2e3b246deb920e51f2184b105d302c0dc7f20fa. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/PTVI12200200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e917dc69a3a028e29949a25a7b88b9a01a77540b3379f29125c629c5e07b1aa. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/PTVI12200228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf915fd524245e94f174a765b159463e901bc580f739f8dfaa3583f8bef200357. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PTVI12200234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f4ee1bda73d71b395d25cde9dc15ee85eb61becaf401209ef5fd4ff2e17618f. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:06:52Z), 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/PTVI12500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43d1f3d2c4e9dbe55c6effdfe682d602fe6b30afe8a848732f827d1606f7585. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:45:45Z), 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/PTVI12500051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1773e5e190bc09c99057a30a0da633fa20cb062606f7b90b9cca431b32d63a9f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/PTVI12500196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e9e1ed7a3792de7fe1c9911d9571ec05d14ce2408e9cf6bff4d57ab9f1e855. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/PTVI12500486.