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 0x388ff125f83a2d85616068739d7725cb81db88e5ba2b818b459db1a2dbb41eef. 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/33f7dcdf-90a6-44eb-8fbe-c1212adae2d6.json and https://artists.proofprofile.net/proofs/artist/33f7dcdf-90a6-44eb-8fbe-c1212adae2d6.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 0xc6c52df232850fe567e22aee288fbfc7405a4ef70291be25b32e51d5ba279b78. 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/FR4E42112420.
I Got You (Cristian Marchi & Luis Rodriguez 2019 Remix)
I Got You - Cristian Marchi & Luis Rodriguez 2019 Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246f5390c8feae2709178efa7c2a126f1a40f161f599942adafda6d8b6fc2142. 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/ITL011000359.
I Am Alright (feat. Tava) [Laurent Wolf Remix]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69a987836aaf80234d8a8b21fd803e68574a57685f9244c76e742f112b13bef. 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/SMA011700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1a4ddc83cf073e304beafa4435589b07c1bc81d31f849f1ad1e16fe57f7798. 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/NLWV71700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90aa30dd90d4684f83570fca44ab30025efe9e7b51a9a50b76f2b880edd5e9ef. 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/CYA111600037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1040832f56663eaa30c4366ded498814885931169536551cf96619bf2c2c76e3. 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/USUS11500186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71127938f4d769ecd67f0377d7c9197b56aafef83c7aec364e83958941b1078d. 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/NLE801500602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c546e9d9584ac1a82d5bd11e75ed4838762a4be5ae70b91313e24e8d1d1bf5d. 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/CYA111300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38577efcbee8a2606f0837de581f88faaf39705179aa470aef67487758ca8ab. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:44:42Z), 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/ITD451300162.
Smells Like Teen Spirit - Original Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa9842bdf79633d3ac09437450f4456b025a456b6e9f4e811988706fe7689bc. 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/IT0311001645.
Take Me to the Stars - Cristian Marchi & Paolo Sandrini Flow Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ded542ddd849abae5de30fe7eea126dcebf436b776df58d85a66d8fa28f795. 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/IT0311100077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97d982f27bde8c6935441e10528613258aa02dab9a85ee3c843a97eae8a902d. 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/ITL011000148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd188d58604b4f963310ec8f516f6889eff528ea8cb6a6dd8f488c39909ede645. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/ITL011000149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cb209d6606e235fdf96ad7bea21694c9d90b5ea5ed54311ac7f43ca73780103. 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/ITL011000150.
I Got My Eye On You - Cristian Marchi & Paolo Sandrini Perfect Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48296e41b8873db634db0c6e348319bc98a4aed1c61d6fa48cedc6cbd3bcd366. 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/ITL011000154.
I Got My Eye On You - Cristian Marchi & Paolo Sandrini Perfect Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3e2efa140e88609e7cc16a40558422ce7b1d290925763e1b1e05b80b0e8eee. 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/ITL011000155.
I Got My Eye On You - Cristian Marchi & Paolo Sandrini Perfect Video Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f477c63bb9b7619decf17794a1396df20d72f6302f6b31b66351d7617433482. 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/ITL011000156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26eac7467901f85a5286f47a5da5b5d371d6e06f18168a18f900b972d0438259. 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/ITL011000224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b2592288eabb5f0e651fdbeaa894db6eec2239332a59472710a95325c408a9. 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/ITL011000226.
I Got You - Antillas and Dankann Inda House Cut
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79819a79783c5ca608a1c92f1f549781887b2d24870f5e1abd2c475ce7ae0958. 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/ITL011000270.
Let It Rain - Cristian Marchi & Paolo Sandrini Video Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9289eacc705d0e99b355262f374f586a6518b9cc6502e2878369b8fb56b7fed. 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/ITL010900173.
Disco Nuff - Cristian Marchi Perfect Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69e22ad84bbce50f12c5e6882a44d8f1910b57bfe691a3742aa3996a95568b97. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/ITL010900054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9469c8869041000b80080c4cf78162e6ffd6c93565658eafcd124a63944159f. 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/UK8242200346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada4ea8b7f5c19378499b2ec146b866bc58dc0311e00a37bf78366d89ccfff4f. 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/UK8242200350.