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 0x70bad64a58226c6a7a2b36103d8a66dd747c30628b750c640f4151628e27f381. 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/268d341f-118f-417e-adb0-6874de189081.json and https://artists.proofprofile.net/proofs/artist/268d341f-118f-417e-adb0-6874de189081.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 0xda0e2f32c3de891c8cef5357d96b54ba579782007ec200ed4d4a103856b72745. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/UKZGC2300282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1834926965baa063e1db318cd11c8f9676db1e631f0d5100a53aeb21c1757567. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZAAJ2203860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaa00b56f5a560fa4ad6513ea2f878b8ada0c6323133a90bdb3b19246dc19508. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZFZ42105806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4978014f5944fd1cc9ab05d59f4e4428c81cad2220b86ab0e8ddae76d36a51. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USX9P2003793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9fbb290e6da1ad1216292053594d391ae9affd1581c6336f1d7e4c772647c5e. 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/CAGOO2016051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b85cb76520c555e81b40d4a82a1121914164b1916858a24b91a1ca13c8e891f. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/CALVP2049181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbf48ed62d419bc85ba848baa025c9569995725b019604f2c3822b84d99cf9c. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZHN51906213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7138f6cd783c6e83c4847c5e2a96d60a2e0cf083f65b4490b071e7dd599a3406. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USLZJ1962675.
Falling (feat. Emy Smith) - N3wport Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c0fff5e21cc32ff1a15b022c4905e1b7f1b4db92cd166524036b6c3028ae225. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/USLZJ1886633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f39a490d5ce8addfa0b47333c54a4ee3e6fc9cc30facda6908b7f4dab5bb1fb. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USLZJ1883957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe96036832848924f5e5c56540d77ac78902108637515dccedeff2d3b5d99d676. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBRKQ2560533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0381e7a78bfe56db769a9e87edf008921ce4726fef4f9b2f1fd8a1de18070668. Chain 2 (Bitcoin): anchored in block 959138 (2026-07-22T14:10:55Z), 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/DEPI82310752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67e8cec161bc71e578d15d4dc09b93910e02e24ca2e8f8106d7bc1a7e12e9756. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2368927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e16535665c1921ea590ac92345d4563e01009b70af01d9ecf14507d7b0fe12. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZZEB2319928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec1f6d81b82c9793fef13fbc12f69357ac5651c5957b5d440dcb47c7c79810f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZZEB2361065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0635892437dd56711b63f9424f8823d9763f4c7ac48d8d1afa291be3633584d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZZEB2361550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43e7386badb42858db25315f87272cce826a86a2221dc7554109deafe27d12d0. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZZEB2319907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd045db21f9389e05978644f41e99ea424cc52e5e55ef0480f49ae14135e048. 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/ES5052200790.