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 0x7be562c954fffcd88297acfc4ce1502ae29e1a55aaf4f5f0619ee91daff92b1b. Chain 2 (Bitcoin): anchored in block 953684 (2026-06-14T19:51:57Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/66950228-8f69-4eed-bf7a-f8319b9207e3.json and https://artists.proofprofile.net/proofs/artist/66950228-8f69-4eed-bf7a-f8319b9207e3.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 0xa38f9c26e1060fbd62006676929f274f962f679c56ec8433cd2a4d29d732afea. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZZ7V2435082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639d5cd4b5184d4fa25b0f646556c5d64c1e690e03a9cc26f54193b4a80228f8. 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/QZZ7V2435083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb675b009254d3e1f1dc0c11f568a9ae2b55c6f32d2bc3bc2eb170b554d824f3. 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/QZZ7V2435084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9adec301b74307e03b1f8e86da0893050367a97fb626a0fca5cd90b1279a94f4. 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/QZZ7V2435085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce9481a5449e66b1d382a62e41eecfa9b6512dd3d59773fe04ab6779043cd889. 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/QZZ7V2435086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dc497182fdddf7255cbe7ae14f65bb963f86c3c935d4979fb2135422c8194f. 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/QZZ7V2435087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7247d325e2ff77d52c0e17915b5fee7ffe27b6634ece13d1e8b431055a296d. 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/QZZ7V2435090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8831ecec631e6cd3611545dedd60b27b60e378c3cb3878167de16e653aaf34a9. 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/QZZ7V2435092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639ee54ffbfa6cb8de72a8734cde2e5b661ef8beb3c414b8aafd16ac6edecadd. 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/QZZ7V2435095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2308f98d5d1f5177bfa44ff1ebf273312cad66080923f200ca25a1b296461f14. 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/QZZ7V2435098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bbe47efde384f61578adce3522b572e50efd8f86838a6d145f3f425da7dba8. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:02:36Z), 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/QZZ7V2435099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc096a07ae79ebc28ffe941d049ef4e900a2f3ca7c6e6552948c1c6e7a2d14fd0. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QZZ7V2435100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9746ea9db2d8bd4e0271a52ef22c538b086192c30c5a4c49af29f2caf024b671. 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/QZZ7V2435101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e528f3ac3c8df8e8741ac5ca67e972c0e85d9ed1d0fbd6fb03d7fbc2b99a71. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QZZ7V2435103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x138aaae7cf1d7a0303e2a85429c0115f9b790f72db658558aa8377771833ebbc. 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/QZZ7V2435104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x399a42538a18db60719801fa9903d90bd8ace9d52bb9f7415342964e0cb9800e. 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/QZZ7V2435105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3014aac07591fa9002779241bb444020195ce9f7f512fc3f869b55c1447ebb8. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:41:08Z), 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/QZZ7V2435107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca89aedbd010f7f2eae2c897dda69df01ef43f6a833de739ec78a2ba5bcd38a3. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:29:13Z), 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/QZZ7V2435109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ace89707b85118a426754099969aa0947fab48a855a849a4009fef31f7722e0. 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/QZZ7V2435110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd030c8f9edae8d91519fc9b54e9a2fc393f64f3b5894c9556687dc06a2c73706. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZZ7V2435113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4afd7fee62bfcea6dea82e41ac58211b1e1b5fe08f99ca50777ca0990b944093. 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/QZZ7V2435114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52c6720cbdcb7f41fa2f03b1fcbff9e65bae53de7b08bdb68a53a261ca6d16f. 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/QZZ7V2435115.