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 0x298ee32ad4460b6ee7cc98406686f6fad126e9dd40abdb5e1e1b327ece70a2a6. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cb29c4de-bdbd-44c8-a65f-2e5e3414b50b.json and https://artists.proofprofile.net/proofs/artist/cb29c4de-bdbd-44c8-a65f-2e5e3414b50b.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 0x5e69e5725f85d552f782a9c99de65d6a6d18fcbc7144d1a4de63b3abd56199a1. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USHM91820200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dce4f06f09c52df15f09c470a60e3f9875c440b01a4cffb0fb64708762a3103. 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/ITDF61977010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042f47ae8610beb7592f84fe830d76cd6d21d841550a1a8e912a9dd4fa3e45e8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/ITDF61977048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e4877d3a24637a137f7f5bcbebeba297cbfe744897346150e85fdd535f5e3d. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITDF62077002.
Una Ragazza Un Giorno Mi Ha Spezzato Il Cuore
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89b235d919ced9cf2e6b0696d2cf306604e559bde61d9be31e6177bc35925638. 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/ITDF62077003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9081aced20acdafe9f2484eeeeccd6a8425bb6315744b8c1b87ec0ddd3097803. 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/ITDF62077004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe649a0c37aa69425a2d3ff6a8c390c2262f8e4555c5bee09ec88f0c5f5da744c. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITDF62077005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8734c1ba23653d0e775d19e0cc3421229128c036d73eed35485c24ab6d5509e1. 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/ITDF62077006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5c9835b1f2e4f769bc3c80b79c43ec628a70ae11f290dbf6d30512a97f306c. 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/ITDF61977079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc62f98fcba574d90f269929d8c46d71eecd4150304d4c26ea54b6edee7cbe077. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:34:42Z), 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/ITDF62077087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df587b118ca1ab937caf91c45e821e5feb7af19204ac5badc959756e3f98e0c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ITDF62177010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bf41c0f5371c5b3ccb80e049f7b852e2428bd60c627c7c8d1316385b7496762. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ITDF62177069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb20e34f71af2cb0c900e8b56efd17c25413d927f73150f8373d29537eb1cc8. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/ITDF62177070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66fc173347cd107232c67654ad1e36ff90a702cebe8c030a9e9d2d5b9e638931. 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/ITDF62177072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb22c6f3838abe4a806e152d29dbf19ff57270a68bc188b86cab0f08acd04c632. 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/ITDF62177073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4df587b118ca1ab937caf91c45e821e5feb7af19204ac5badc959756e3f98e0c. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/ITDF62177010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca381ebfcb5f947be8f20caeefaf02b8bdcd45ff4bc7a0b80c74f4d031bb045. 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/ITMDU2200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f10348cc6ab4d9c34c55886f987ddc3f682f099a1ec42c778f6632cf71c5b9. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ITMDU2200054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fda643cb9bae88208a01776fe81c592b5bb5471986f0ecb65251494346e58c. 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/ITRYJ2400005.
Ho Una Ex A Cui Un Giorno Ho Spezzato Il Cuore