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 0x3bd60a743607c5673e13f786468f999d025a7868d37894ac2ad31d9b4be5fa9a. 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/f79901c1-9705-49c3-b656-e7bb28b5f431.json and https://artists.proofprofile.net/proofs/artist/f79901c1-9705-49c3-b656-e7bb28b5f431.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 0xb2e15262d0f06dcdf9cffa893f9da7e1f769316d468b4b967b93ce9ee67a2700. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZK6P2149913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63291fb2c358c5bfd060ebadfbbb7370c3137112699f907d522df9ab7ecedbf. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6Q2188761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cd0cd50934dfbdcf3362c92c2bf1c25b5bdd2e71199a84303fcc0b41a438ba3. 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/QZK6Q2188762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50cd4efd19edc1b8fefb4644245b63fdfc74675cdf43d5f245f68255bb2ac6c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZK6Q2188763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9af13c8b2c88bd44490e77cf19bee22e6c61d2c69e698712f6a90419347885. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:02:45Z), 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/QZK6Q2188758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb01bf5b8e9a5baa614d0f180593a33ef41371ab6b386aa7f4ae54daaa1ea431. 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/QZK6Q2188680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10165e05f76216b5a25c9a498471b17bbbb6de4f429f8110484da56ed123498a. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZK6Q2183049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2dcb6040d1427987227023e9e652038feadb3a1c5b63fbfb9034b6a67549f7. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:42:27Z), 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/QZK6Q2182071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236c094664b31d7bd2d26932319e8f309b64281ab5b7dfbd08e6c3c9c1b20dbd. 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/QZK6Q2181094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c0e02003dbfda036b3fa5f21b6c36362345fb4453f8815d5328b1fd9fb3e6f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZK6Q2181093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79e549b0788ea1a23da80b3fe3559383f12cd402075ac5356781312f276ed528. 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/QZK6N2234311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316d61531de7582ee3db36613c99b32db26b8091937db62407c295ae3baf0308. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:33:43Z), 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/QZTBC2415871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14b190fac7c225a16dfe62bfb24235e799727490e6375c86fd15214e75c6c369. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QT3EY2449166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1eeae573aeb53318d9dd1e3c9c22bb0abf9347e5d04a28b055fba1d19a60e0. 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/QZHN72572609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978c2830c8a5223d237e76d609e2933d2eda3c9b6ac577363eba0a52f5cf2079. 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/QZWFX2523898.