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 0xe934122000c7ec17ae06f12b54fc66089421db6485110f1c64eab7794a94f368. 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/1741c3ad-cfb0-4669-ab4a-39ac3484f18b.json and https://artists.proofprofile.net/proofs/artist/1741c3ad-cfb0-4669-ab4a-39ac3484f18b.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 0x0d32161b0fbc91d9981ddf9fbbf36a680397d1f49bede09c70d79219c5dfecaa. 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/TCADP1899759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f099f5470c5a98e9b24d555180a817bac4499919c59bb4c1240e90eeed95f40. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/TCADP1899760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86dc8ba4b914e40524dd960531c6dc52ecf061f8fc5c136caefb05842184fe0e. 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/TCADP1899769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a097de7c08ccaa9e83096f2035853d511ad2934fbe1b2311c07b14c0db4b57c. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCADP1899776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ca29eb2f643debde36ca6b65407ce74c0cd1af181ea2676e319d697d13b4dc. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/TCADP1899781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5787dfbbeba058a99b63ffc0d304dab737a2faf9c544f31659f28febc50b5937. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/TCADP1899849.
Televendite di quadri - Remix (feat. Dutch Nazari)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9d908cf60d02ef1e8868e97cbd185162d975d997578bafd252deb1ffbe9198. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/ITYBK1900037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcebaf501e2d3e08d71ad91fe4ce047aaf02c622047babe2f9db06b6e9e01f2b. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ITYBK1900023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2da3ee81b89b4135bbe1ab574fe96f9be5ea945f0b302ecc3d373689e0691cb6. 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/ITYBK1900027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743d959df22b4da8b5b26a74d15380d6b665669444e4b78de6681416094f2d71. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITYBK1900029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec661fc2b6ce898029533fcc64da2ad834b61d4255cf50bead0f96e2eef3cff5. 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/ITYBK1900118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0471240736cb1384c493ade5b86fce06dd1b3130d2d5a6ebfe36b61e8b3db92. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ITYBK2200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecec55cb59cd999482358b589632613730260319949368b2013d86993760cd5. 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/ITYBK2200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf1ae249dae531dc8708db6cb1babb11fe31118c31c0190ba1243ca6ceb88da2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ITYBK2200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd448ba0309adc83c8eab94b9fe542c06e662d7e599dd9fb9f9bf19346530790. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/ITYBK2400089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b06de7ff51fa03fc20eb49366cb1bc3ad3a95b8909d13b32a897f05f5d61ff. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITYBK2400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdf324190c0607c0a585abc27259404000cc18fcc0a43a5befdaef6908c64ac7. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ITYBK2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33805191ae4baf0ab564ef6f06477f6987c0ee99452ab3da18de3a6b6600649. 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/ITK252310000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33805191ae4baf0ab564ef6f06477f6987c0ee99452ab3da18de3a6b6600649. 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/ITK252310000.
STUPIDI CUORI CORRONO LIBERI (feat. Post Nebbia)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbc5daad97ff0fad2f1fa1b09c8dd3207dd37db062913dc0a693b3d508d180b. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ITUM72200738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7ca9c710532a08f32e961f443dc0575b1342ff5ca266558469e48d87df2149d. 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/ITIDP2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2ef6093dd192979c6716aaa5c949a04ef149b881786f812f0aab618e5c1ad2. 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/QM7282029357.