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 0x1bad6d7353dadde20e5fa71178648be210afd30a72b1e74caa20182e208ccb61. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ffd828f4-8597-45f1-972a-5b75c3c855b3.json and https://artists.proofprofile.net/proofs/artist/ffd828f4-8597-45f1-972a-5b75c3c855b3.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 0xa9a27e683731dc7e3732bd62a5eb594bee7c6eb1a536e221a9ad4fdb970aa584. 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/QZXLZ2524926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd049589f25ca24d82aae75e95bae90f64a08637262fae3c7210fc92fb70e00. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZXLZ2524928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08de62020b238d7384f5efb49bbec6d752824ca68c0a1865a00bb5688fc2a40f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QZXLZ2524929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd823aaf13445c1ec28b0c8db6b2cfed974d7fc162cb008e7c49d7bdc5cc06237. 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/QZXLZ2524930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77a4eb3dd70a05c863fd52fbed2f9168beee42f0647f5c242214faf5ddb85a0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZXLZ2524932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9531b74a8519d039ed48faa909471d972398ea16e779736b56f13a3d55db5a0e. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:38:13Z), 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/QZXLZ2524933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d0fe6c1cad8752492a304398ed73edf55f124f0ea5a04deb19f02e378e48aaa. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:01:24Z), 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/QZXLZ2524934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13584f0f76174be3ec5111269e412db140e4f218266b9635c692ee809375a8d0. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZXLZ2524935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c3a723f58862763f3c9c2c5d2081b4df9991df6f78e165ef782f42ec7b2f3a4. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZXLZ2524938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68ad05717b7e666ca2043946a8cd757d521253ef275041428891e07809fbccc6. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:58:49Z), 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/QZXLZ2524970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13998bd37bce0b0b4e10c4b4ad7f5916999b5e39396bd4ba7322efd16c12617c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZXLZ2524971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6412905fcdbb7f79a872b90040f1dca200b1432272913b5730581e9a45fe5006. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:53:23Z), 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/QZXLZ2524972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098ca679de35af7bb3ff3b6f1ef0b6c78d61e551b3eb31cc5c596bf93b6d074d. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/QZXLZ2524975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x113609c276e1b17294c0f23d83977bb2d9a983c2d0c31cf2c6e74861751701df. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZXLZ2524978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda940013036cfed6c5c51329912bb8631d3fd213f348a474f310ecf8c45d3251. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZXLZ2524979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf43e465453f5bb6cf01d360b5c5a8493395e9bb669086b18ef4388c4d3194e52. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:30:35Z), 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/QZXLZ2524980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ed4c58b1b9ed20ddbc257f6cdd4262becaa47e40d88ebf30573302aa99d507. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:06:44Z), 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/QZXLZ2524982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba779be199d8d038f5a0b30500e54aa42beaa033493293fc077689d4336525a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZXLZ2524983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009b8c106d3689d58c42e579977254d8b151db9594fa4a28fbff795782d45f0c. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T08:44:34Z), 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/QZXLZ2524984.