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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac499939d5a5be37c166a3f496ffc899235e413cebffb36d13daad99a34b8036. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/89bb0ae9-53fe-48bd-b312-d7444f00fe49.json and https://artists.proofprofile.net/proofs/artist/89bb0ae9-53fe-48bd-b312-d7444f00fe49.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e43e442720d9128e71a97710e7b99d626b386696818d153d2b7f587341dcf5e. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ITB400300263.
The Best Of Gegè Telesforo - Groovin' On the Swing Of Things
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17b7d72039a38df5469e4fd77c203d916944c399a92dc2a32d7fc479803f8109. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:11:15Z), 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/ITC471520330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3549bc33a79ee03d08425e7b581d4165b4eaef6d05f457b8f1852c9065455da. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITA450200056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03a4162fe342919688da83269c2b55fbb619db874b671c70d05bc2f3c1d4bcd7. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/ITZS71200031.
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 0x649a72d96a6f3df1c835ecfac1dcf13a85e3e54e1bfedbeebe164cec83c1e144. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/ITZS71100091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17f32130ea4eb63165883e085f1e33fc616861e55e293fd8b3155033d0b6903f. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ITC471520333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc475e19ff726340297260ada5ac58c5fd3cba8e188c89bbdc42f1ddeb7f98224. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/ITZS71200029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0a7eb241ba5509bf122b16ae795ed54bc064ccbc1ce19d935b04de73634388. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ITC471520337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31faccd6ebbb7c85fbdd35f273e5b421d20eb0fc3f6ac10a37b3366b233d564. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ITZS71200032.
Mother Tongue - La Situazione Radio Edit
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de4b75b4c56783ecc04c181b41df5c3ffcfb421004778759a2328834d355904. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/ITC471520318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x969c7c093d2ba9e60a9524c1eae68548bc01c3319edbf43eeef7f891902007e9. 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/ITC932013504.
SO COOL REMIX (Mc Calla & Alex Nocera Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa99c471abb620e0de8ed551bf515f0653e729ad60901b762b9d9be2e16526373. 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/ITZS72300269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x264833c7d260f6b39b5ef9648ef6dedb90937eb8bc56c68f2490eadadb594147. 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/ITZS72300270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26895a88f01f0a38425697c84de5d9930ca23fb5e9b8beb11631143ba10e35ca. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T16:35:08Z), 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/ITZS72300271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x643fd4565c32a720318bb2abc333c018341f3349ffaff94d2567d1b8ffdbc8f6. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/ITZS72300273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a58afa3b2bcbc7a3b3a2f533577466d47e7c86467f4554c09867ed33df8aded. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ITZS72300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2587a45fe1d40f91833d6031547016a2a9d22466d5340f4ccfdee2177ff1b4d2. 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/ITZS71200038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a2cab72ff1b9f9e7eaae8490dd5b377e1beb3e1f127d118acdfe6b19925994. 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/JPM871000405.