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 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 0x98363a9ca9342c9bb47697381267f493c8f64542ae2ad43181cba655880efb7a. 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/58f7dce7-3e9e-4a71-ac42-646d11e96439.json and https://artists.proofprofile.net/proofs/artist/58f7dce7-3e9e-4a71-ac42-646d11e96439.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 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 0x146388feca4195b10027c868fbe84f99f785e43e7d73c4eb114b784bd73b9de1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6J2427375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfef6f1dc76d502f5d9afc7c9fb6085bc3cdf58652517c9d977f262c318faa280. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZK6F2413008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc01b9f18755828a1575d98542b3db39d3efe52997fbb9955ed0c313c29e175a2. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/QZK6F2417190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6983ef25dc912f1f57a09a15126e7f05dc47336c5d8a73cd6a359f6413f517f1. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZK6F2417171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028fdfd1238c9f23ed96d6bf2ed449ac3684ce7c2dd5919b100d396a74843895. 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/QZPLS2433483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d617a44f5d87608e872b552d91d80462228779823224a9d48f14e9273398dd3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/QZPLS2433489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x477f38b7cb57b0c5074dfb11bc2ab67840f22a0cb281d6521f2172942bae2b1c. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZTAZ2452927.
Deadpool & Wolverine Theme (LFG) [Epic Version]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b41ee1926e5d9f3e17a33b53572c48c3fbe298e3a4795a0626c53ec232f6a2e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZWFQ2419567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fd68c92d22b2bac4bfbca32404697a50c5a60dea465a24494ebccb4781111b. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZWFT2492246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f430e443cd58e07989e75ef60eca2b56dc56236447faa210f3a7caea933e92f. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/QZZ7Q2424246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0e5fd4a05e7eea0bc045eec6f6c5cd43f9a4d75e1db7067ad30cf4bc21bd8b. 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/QZES52549600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x315dfb54618285ef9b44f329acda3edd84ada94e8a2f9b776b3ff287693a2592. 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/QZES72518800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2daaf69fc7507d7f89346228c2d5157879c848cff8394ab1e4fe64c6ca53f8. 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/QZHN82540518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc56f31bc255805a14dc2cf60f705372faf00476b98ac48f2f2bf5ea2369d8bda. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/QZHN82539440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757fb8a364662c30dedd17b606b655c2ade70150b3c4e280b35673153b7b0c15. 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/QZHN92547310.
Sung Jinwoo vs The Ant King Beru (Radio Edit)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab98fe02f8bcd6ac70d6d0a8da8e8ed221051731172e29acbaf561b8572adaf4. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZK6L2538622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe451b8243280c3c23a9c0d9a9861547fb6fd016e5768f62d34bc28f88a09d977. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/QZWFR2566411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb83621e66a6f058480930b7cf3b565f3ef9fafa4acd662d27216ccc7f997d8. 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/QZZ792569322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ce1f95d87b6148899106a1e997499dbc4bb5aafd64470a2f04e1a66eceb0fcd. 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/QZZ7N2520192.