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 0x97a43873bb42c1c6e54b5cf5a56e863dabf2b2c372724b8b876466923dc8b50d. 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/f4755979-bd24-44b4-9919-20d200461b9c.json and https://artists.proofprofile.net/proofs/artist/f4755979-bd24-44b4-9919-20d200461b9c.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 0x1ad9fb48cdad421deb010ca8047dd56e801c88dafd8c2583e8e648949d16cba5. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/GBSMU5860503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x424c12a2e7d14fbb61bfa7f37c7f4989e31f7b7e06a6e581283e91fdf888c42f. 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/GBSMU5860514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fb5ec6455f86946eea5526b7eb16bacfcccfb6cc649dcdd06c7e16e1c3a661. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:22:07Z), 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/GBSMU5860515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bd34a292504999332acd0e760a2d48e22b13db045de4f71ae34be73263017e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/GBSMU5860505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d1ec88559736e515e5ef34f58ab22e551d6dfffa6a158a112db29c523fa5bfb. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/GBSMU5860506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a4936147636aba99edb39fd93c22fd4a358edd4a10c663810fcf804ecd9e387. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBSMU5860510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267796a5691cf15646a87f1b0c8bd0a511b67ef84d7def371a4a763e6202d26d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:44:38Z), 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/GX8LD2385866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7f7b86441ee52c296df3b0f1bedb7ff8eb44ac41946de8228da4b0fe4744022. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:48:21Z), 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/GX8LD2358296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed55810de2114cceb77192d59be7fadb28252164882d8ce95220a40d467b5aaf. 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/GX8LD2372415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc052e5936abe9a248e9d4207a31f7f710de81d65d08442c92de376d821f4cd35. 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/GX8LD2391091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8cf49cba6a3e33b1b6747468d2e6d8382a97e77fc68c29fcefb7e2943ebb73e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/GX5MY2343476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76a40deffd23b3ca192a14188dde7825838bda0bf9e4864de12c52cd3ad652f6. 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/GX5MY2442007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea1000392ed238d947550e3460fde82f45d10fdeaf4feb9081352ed006b3240. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:57:01Z), 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/GX5MY2493644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d71eed94cb0153ab279c40bdc97fb074d25e408e0735f543567bc48d657efc. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:56:49Z), 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/GX5MY2475839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fd999bdc7caa6dd0e9fd6fb7755962af13f0501125e85a9e48d698b838f105. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T22:11:52Z), 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/GX5MY2452520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de31ab06aedaca05de10c9bec6c8778eb3527672d7db7e39e63047286d7c830. 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/GX5MY2411606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde499e9602b603250444056bacdcff27a31626e4ecfe1c83a5fdcfed5e126160. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GX5MY2466495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a9d47e923eb154bfe3026dc5f930b111da202aa9389f01273443373ee452e07. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:38:12Z), 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/GX5MY2427329.