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 0xe394b4390218c5a91dcd63268a0f54769b5b85eb77e80b4ba0218937866203ef. 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/2b3a11a1-37c8-4a66-a6cb-18790b36805a.json and https://artists.proofprofile.net/proofs/artist/2b3a11a1-37c8-4a66-a6cb-18790b36805a.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 0x9ac2d6dc345526cb7c75d339a955faaf7ceb3f361adeb7bbcef18d50cb8abcfd. 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/QM4TX2006842.
Say It (feat. LP Giobbi & Blush'ko) [Go Freek Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d8411ab3995654a8ae7e5966f8b46cb3790693615967407434ebed713e5f724. 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/NLZ542100025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cfc8f435d329e140ecd27750af2cd58d097ac830e1aaec4b4c37504d7685afe. 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/DGA0P2317139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dd06fedf91ed2c60c395dd8f528a8f2172f5da766b1180066e6dda6d95a7e2f. 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/BE5KW2310067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x163f6cf4a3197685521337ac7ccff0e5c65cdb94b61bf4a7ec3e5a0a9b683ada. 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/FRPES2400300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b9f74bb78c63b0888ed263a60f7dfe5999a7f885fe5a48c402ce91c16c7598. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FRPES2400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6d28732e6982e7e8e993944ea9918c43c604319271702a557600666b6b85f3. 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/FRPES2400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5346e2bc87a05b5580fd6dff0de4c25dfd8bb90d665cfda033f509edbdc4e17f. 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/FRP8I1704040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6d28732e6982e7e8e993944ea9918c43c604319271702a557600666b6b85f3. 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/FRPES2400310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e07e280224d400ebd77dd328a938040c84c60d75db546cb52b49dc67481c37. 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/USYBL2401106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b9f74bb78c63b0888ed263a60f7dfe5999a7f885fe5a48c402ce91c16c7598. 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/FRPES2400140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee6dedcc977c2e2dd8d5cb1e37b680976d483916902f4930b0099e4e8055a14. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUDCB1702277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38b0e653bc3e13ad8695132953858366ae48550b3f163f68ccafce1d91e4e25e. 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/QZ8QY2100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb84ed22201dfbc62b708fb7449f3b002dff3522ba3d7a6b1feda4a7f21d2f0f0. 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/AULI02142910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28aca16993290c5bf7d1edf257212431f6eb9c5f2106940efe9cdbde93fded55. 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/DEVF11700273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1917bb472f7507697c61981e0ae8dca935354c0cbb42f0b7fa028f08f5e2c518. 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/QMDA71876095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d21e5242894df7efbd75c7e3c5bb3589131cb48c2d7b191caa205c102d0be00. 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/QM78L2000083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e5be38aa51a98ae4fdc8dadd4bed6f7a102d389ac2f3a6076a91dda0b67f06a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QM78L2000088.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3856bc11b981ed1367cc0ec3e1a62e33b1509aa8d956c905b0b74a5b1194d5f. 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/QM78L2000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe8ab7581995485e638920e78003883be2826d1c7267f6b27c821ec16611004d. 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/QM78L2000092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2f633611d13a74513bbac4b2ed5f23d66be23455add75e18eee86319f7758d8. 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/US23A1559893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d3adcb655f1399c161daead9b3691f01ae5d675e8aa8dec18555e632fa033a1. 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/AUBEC2104550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c743ea8e276f1a1fd9d943e13a1185d0caa01979ebfccc00ba8fbf5590d0af. 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/AUMEV2551708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e36257c888053e37a3e1bffa84c3acc670a30a62de4e64368d4431d95f62e1f. 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/FR59R2592358.