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 0xc3e2b61cb7428d207e03f455b6d565c5c856d27c3105513841a8d93c32142f58. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be47e9e4-e8e8-40ff-9725-3effcd9c3cd5.json and https://artists.proofprofile.net/proofs/artist/be47e9e4-e8e8-40ff-9725-3effcd9c3cd5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Confessin' A Feeling / Love Gonna Pack Up (And Walk Out) (Single Version '72)
Stay My Love / Surely, Is You Is Or Is You Ain't My Baby
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 0x0ca14654aa4052c0ce16562b22c3082d1aaa00586637edf51d6f3c6d371a0cfa. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:47:43Z), 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/USDNB9652301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6110c5ffe9029681c188f49e875404c687046c11a045cbe4d183602bf5644ca. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USDNB9652302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45675c3912e4d81b379c3931dea3647dc8214a5070be0d36a00e36a9d30b6375. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDNB9652304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a0d56929d2f71401b5072ee93715595877beff5ea4c6ab59da59530c557bad2. 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/USDNB9950602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a78ff25323c2c78f6de3df6f1de74bc4f2f9db88aa78d6e0c90f40cd7e4d711. 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/USDNB9950604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf51f6a8efd37245170c2c69cddf92bf9d9af112a69fb120638fb949355c38e34. 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/USDNB9950605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5687cdf598f47b63598b101ad11155e20b02a1a60795d4dcb7c5cf5dd44d778. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USDNB9950607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6f7fb573026807717a4b4fb8d95e2d19a12e04cbadba41336d1c8031f20ab83. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USDNB9950610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42847dd1c435e020252104f44a72b54f8aa443ab4d4c80abe4634cb15bf74dbd. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/USDNB9950611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b52a33322829168c1d1e77d758b8909e13d88c79a3cc50df5d3e8c0b53f2589. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/USDNB9950612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba4345e110a55c272b192a74e46067e204aef951599d9f0961a1445a676cf01. Chain 2 (Bitcoin): anchored in block 957550 (2026-07-11T09:54:43Z), 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/USUM71305592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97fa0c86cbf60ef0e2fb67e9b3fa0797b56a4a445e1ea1c4b6e6e2560f5654f1. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T12:07:57Z), 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/USDNB1765907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7886b079003662ee258d665c4c5ad7f3c3064f4205ff40b85bdcf16f6fa4c0d8. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:08:32Z), 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/USDNB1766009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c4ee2150ecc917f4a664082d15f31e46d52c561dc96e58af7c5e8abc1c5c2ba. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USDNB0352007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695cddc54fbeaae90aa42aeebbfcb53dd7450cdb3bb094a4e09e132e9ddd8404. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USDNB0352005.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42b4d8ac5c0b89a5c737e8555590c680458058799b8faaf589ba1bc887aa2a2d. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/USDNB0352006.