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 0x87460c05d45b7d3577ff400fa5d1ac92a5d3e8baa9470d00f85496dbcbf5ec81. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b31fc64-603a-40bf-9f22-ba425fdee39d.json and https://artists.proofprofile.net/proofs/artist/7b31fc64-603a-40bf-9f22-ba425fdee39d.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 0xca94f07a526e106840ceb67bc74dc0aa9018eb396124aa36f33abb4aac01f531. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USL4R2035170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506ae7ac16f5eeb3995ffada57b2cf43e96efc06b7f1a7c6fedaa2d01274428d. 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/USL4R2035173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de4c3825cf128e37b0c8449e9529badef5adbb9fb97928295fcd82c7db43ac6. 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/USL4R2035174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa77b6219a10ce0df356dd5e9dc0114ce4b4541f20b0fc14500d4d974c2bbb00a. 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/USL4R2035180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29b101eb54d7ce57c609a7285a75c1d93b20a700c563d4ffafca88e51bd6d769. 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/USL4R2035182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb74ffd26d4bb3dec31e0eb5558cf9618461304313f4dbeab4922fb3319caf6b. 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/USL4R2035183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea8f385481e7b58ff5f4bfe80274abcaec5130a734511ba383b74d419a3d974. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/USL4R2060689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c6a901463117742bff4acb5aa5e42638b484f38be4e01173860e5fd7761841. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USL4R2060691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dd41f1a85178fa0fb1dca5161179559cc5e0e8616089519961c2e0e97b2b419. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/USL4R2060693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f6f71b8a38fc46758388b89b3c3a830ff1db6729729925f6af3e07fd6bec77. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/USL4R2060694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f6a5c94e16d61e8815a19dc26e6dc20bcf72f4cf59a86a32336e6d1cc6abc8. 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/USL4R2060695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec124e291bc4dcd7ffdd4c3c44c74f7a6365f4f58a71c40ecd82bf0215b8eb28. Chain 2 (Bitcoin): anchored in block 958963 (2026-07-21T04:02:02Z), 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/USX9P2055308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3117bbfce5c289496e0db7a020d1f6f84943b9aa3b7becfed5367dfe9d11947. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/USX9P2055310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa726daffc199521ddf519092ef5cd217e822b17d6c078d50c9f82aa36fbb5c. 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/USX9P2055311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51ae146751037adc0c5ca277d16003933ae4cbb89524ed53eec67e38c32bd31. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:23:17Z), 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/USX9P2055312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598c57a666a0ac4d3242b544504c70a7849d9e622cf85d334ef2739c7ed8a2f2. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USX9P2055313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4a5cbfd1e08d5aa7b8e95195c43a22cdc4266eaeaf8a1c37db3b93ed5687405. 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/USX9P2055314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc605b110c9ad23d451efdbe35cf85f64c9c9c4dca4cd290a97ac75c2f0c51c7d. 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/USX9P2055316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bcbc9471e862fce9ce84176a51a28227c41afc66e0850c3b13e497cf645138a. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:50:31Z), 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/USX9P2055318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6598b7e06ec589cae1e459636583a296367c24d0c8f4ea18e023f37f04f104. 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/USX9P2055321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfac48a380c1bfe66677de35a4424a6752a4ad580914509c2efcc941d8036c9f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/USX9P2055322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d67e518c4eeb3d4a47aede0b069ec66d5044fa40f02b9ab522176beda2bab51. 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/USX9P2055326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d518f762268c6ab9c96107b9f0219c45015084fcff77b38e4f79237cede3b8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USX9P2055327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189012ca3283d8a1bb57c419481d39f647df769773060f828c0ae4df0a89ff37. 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/USX9P2056316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7316a6a97d36604d72b459b103752763b779ab87870731443276bd9ef3d1388. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:33:06Z), 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/USX9P2056318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d289908141f143cee32f3cc92a6e029d93ae0c46f4125161cff35106b7c709f. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USX9P2056321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1401a2a8216398e15e5674184ce53b2fad07c4b01e7c4ece437d6b78b46374a3. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/USX9P2056325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebf3bad39b1c45a7080a74c70a45f400f346584a0455b60972b7290e3acbe570. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USX9P2056328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc76f29b9a60758ceed7c83dc113f3b5bdfd8bed23ce454478be3d9955922ca7. 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/USX9P2056329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f23e33e19de59bf7bcb7ce8b1615f8c0a1368ba2cedb007075dc40ebbc7f575. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USX9P2056332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca7c59bda0c7551bfe48cb059728a14fc01f9920046541b069a5f6154b84fbe. 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/USX9P2056333.