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 0x243fcfadc7b5fd3eac8d71a79e0fe06b91c37d1e083ed0ecd7136876c84f4e4b. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6f80263a-993b-420a-9e73-ae45573c9e3e.json and https://artists.proofprofile.net/proofs/artist/6f80263a-993b-420a-9e73-ae45573c9e3e.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 0x619a4eb5294df12616ce726eb85f9e0193c01da31f40d81a5d9abf9f08859782. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:55:31Z), 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/TCAGS2209406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bfc436de038e1901d7c1dae6110cf9573210795d7ace7b9533ebdaaa5d3871. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAGS2209410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x393cb59488d4438a55b1da0d072f5c8b417470d05478cfeda3581d2bf0bab532. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAGS2209425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c0d7a103b055909eaa22c0f83e950a552d8f6d5d94385fd3272a03c0a851cb. 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/TCAGS2209433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe5fcd6ffac6739ba57c81a927ccb5da3fe3617002e4928efb90f23682133ac2. 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/TCAGS2209475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a5c2ef75cbb6661591c5fd88a5680a298b6f708e2e11ae635c2715455695aa2. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAGS2209483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b25aa7b975f0483629a70a7909e9961a2471e79ea1019f307ee01216701836d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T00:06:54Z), 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/TCAGS2209488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f2399b0e75a23e7dec3b31815334506be60d03b4cb58994cd42d194f080652. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:47:56Z), 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/TCAGS2213928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7feca046d290224f422e05095f3d8d89cf11602dc3f08b9948ae61662764a7d. 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/TCAHB2397387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3334a5e679c4c2ee404d6bf299023b6466a73b9fc7db7c0a62f99a9ff878b6d2. 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/TCAHB2397401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf606855eb4a03bcf8c5c856cb597adcd196655fd500dbe749f8b203c9a61be49. 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/TCAHB2397426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2b127a8980cb8a549d90977989d4860a3c981527c9df0046e3f74490c80ecf. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:34:41Z), 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/TCAHB2397442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc1586cac573aac6dce6cc752093d4145f0f19cde9891332b4824e1ac3e3eb46. 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/TCAHB2397820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32cc261e2f8bb0baa7deea149cba0fe14c23e22038b3cde0e77bf3a43c8048da. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAHB2397877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55cca9239adf7ba37ad214de3d778888bc9eb0fd9b500305e219816a2dc325df. 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/TCAHI2325585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd505cae55820067f95dbbe8b996af7e7413d71a2ee9c11a4ef2afc17986389cc. Chain 2 (Bitcoin): anchored in block 956862 (2026-07-06T02:10:22Z), 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/TCAHI2325612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb662cea9626b65a9ebe2aa4c1d51e55e7ce31a9943c59bc8502b2ab9641c7934. 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/TCAHI2325653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55810144e666c7b0e37c6e1828419cb09acabb42b01704771b3c201a76c312dd. 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/TCAHI2325655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71f56c7062173a6319ccb6bee6191864edcf83dc0c6bfb23f272451c5471ba5. 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/TCAHJ2304561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebc2818ab87eafc4d29baf0bb0fea26c8b2d2c9a5aabbf85f7a76db66b473327. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCAHJ2304571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b798e69dcdafeef795ff9dd2138f9027108e3ce2f38ab12003b872c2af5bf9c. 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/TCAJG2527521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c9d040fdff2639bb25124db051dd240d3ae506b86ddf8446af30439a593c9c. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAJG2527578.