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 0xdf614f593635e252ff361a7da88e98f09d85ff5cb4da726ec5b9ade70c0225f4. 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/a808c22e-ad4d-406a-93d2-822ea179f6d6.json and https://artists.proofprofile.net/proofs/artist/a808c22e-ad4d-406a-93d2-822ea179f6d6.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 0xd02c4ca7fe5c51e932240ee2b48fc7e1f5873a03685fcb0834042d59507210e7. 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/UKRKJ2011206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4648e8d8827e7ba203808a51dcbc071110c7dba5c323675a5e676c6eaed8e5. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:26:18Z), 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/UKRKJ2003666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08fcfaf90d65cd4c40eae7e36586ceb04a8b6ef5f30193b7560fc725d398d4f4. 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/UKRKJ2200936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7287695f343f95ff2ed6549f3ee0f378b9feb243ff4f04c6698f11dad0ea5fcc. 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/FRX202281542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f872039fc8c5a86f9ee803e7c96fe897b40e3bad8c67c6aee46dfd0725c02da. Chain 2 (Bitcoin): anchored in block 958776 (2026-07-19T20:11:59Z), 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/IDA642204009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaafcae0eb7385a59508bd5caeb1927d8276682fbeb98b6f2af48a028cc933af2. 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/IDA642204253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11421b7ca4f6e6dcccc61ad59417aa211e6a71907eacad9aa5b9a848663eb391. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IDA642204338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289e0eaec6dc862b1562ae8f5bd4c1c24be9babe5c8ef1de26b9f2decced8528. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:24:20Z), 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/IDA642304476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5446ca0916ea620a41f98eb65a92dd188c30444c9be4babc2ff414dc429ba3f. 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/IDA642304670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c7997670fce56314df3f9e2aec236425765241da997fc0e057294886cf63f51. 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/IDA642304731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c06794831c176dace5be6c4c22bd8b9ba6af0860b802831fd32dd5808d07f3e. 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/IDA642304739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc52851cc3752ff72f56b3fcdd5ecfa9fdb51ea75b5666f380aaab3338c5a94d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DGA052398961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f98f233c199e21950cee1b2557a030111fef59864295a44834b8eab5bc8e3d. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IDA642304802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fb241ed724323397f1bc8298773d8b2d2f301948bdfaded4b8b6ad41c53209. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/IDZ771801817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f76abe0d05cb5bf650eff7fc54df52ef5115d55e4295939f9fb6bae5b587783. Chain 2 (Bitcoin): anchored in block 958579 (2026-07-18T16:26:17Z), 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/DGA0M2363689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x324b75904204334d5a1802a45b1dee1aba0a0e4694d3531e4b31b5145e0f1f25. 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/DGA0M2355586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5159d7f954ae10df0caa02253410f999fe6eef7176b0917a8ffb6975dfb47945. 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/IDA642304916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a4b18b88de82c3cbce7a273d745e72ccac2e184a085eff3c8bbfe60056c4082. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:30:40Z), 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/USA2P2350667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e94964bfe191b3f1ce5a2f7f44a04f3a8d9fa3335ff19c9104b88fa7d22e73. 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/IDA642304981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3bd551cf7855e1f1b40b50167768d5af115e790332857ff03a2ae93a6a940b. 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/IDA642305006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c36d4c7107be78264c9f180f01286506403b790de6ea2ac9688a9e58c66ac. 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/IDZ771801926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ce35a752270555d0e30f0b569047e70a9460f89cb98e9adfe8cfd0edd436e73. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:08:04Z), 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/IDZ771801927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e36963e1959d38d0d37b97437ed11fdf0d4ba73f48934790df084db0fdf3881. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:23:09Z), 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/UKRKJ2400315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42bc07be6db48e64e4b55834dda13a7f0f2d498f13872208c954570f1179688b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/UKRKJ2400434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc196ffb3c25abf14c09b385b840d698f0f6bbcb6a1c8653b1971a4b545fea088. 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/UKRKJ2400551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9431ef4ee5d1d15176206c3d6d7613f18fa417b3085bae39a9304ccdb97322. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:00:34Z), 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/UKRKJ2401220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b6b1107bf52b9b648a0238774ad997dd748b87f300f521a6fae406534a36c0. 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/UKRKJ2400436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6aed752a7c3b1916121698afe5f78c620a0177efa82e0d6008f3bd7587b0d2. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/UKRKJ2400548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0db35415d68c6af1c32818ee6f61152aadf7dc01d93e3b8d2c6a0b1adc6857f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/UKRKJ2400643.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f65449b408dbb87be00e0c0aa05d857276ad29fd11016cc9c52cd0cbd54f040. 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/UKRKJ2400770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5056312b4d4c0fc4c5d57052337fd925c0898feb8d25e3cb66fd8c3c513fc213. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T23:00:58Z), 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/IDA642405159.