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 0xc2a009b3475bfff13ae1f14a9be4bc44ce89c68969e0df0670787e3f61cc8a87. 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/3440bf38-1478-423b-b173-68536a124aa3.json and https://artists.proofprofile.net/proofs/artist/3440bf38-1478-423b-b173-68536a124aa3.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 0x977fa5bc7cc5983d8659b1ce04f0df22c2c2052a468d1ec6e49237b15195ccac. 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/FRX762146212.
Nuova Sardegna (feat. Luchetto, PRACI, Rico.Pmf, Low-Red, Sgribaz, Cage.488, Razer.Rah, Enomoney, ilovethisbeat & Prisoner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3639a7afdb205a94873d89c9f1aca70a9b3e2186fb2e1d75d4caeb48a0a84422. 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/ITUM72300904.
Where U At (feat. PRACI, Luchetto, Enomoney & Prisoner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac598de5e3c87bfe68375aad8bee5b304ecfee47524fe356941bd73d3bc6b25f. 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/ITUM72300909.
Vertigini (Better Days) (feat. Razer.Rah, Sgribaz, PRACI & Enomoney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5ab67f8760203d12c02f30e0bfc09c441e6ae258fdbc8908259651fb674581. 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/ITUM72300908.
By My Side (feat. Cage.488, Sgribaz, Rico Pmf, Razer.Rah ilovethisbeat & Enomoney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x211e6c6b19c9959da8bf61d5bb7eab6503ba79ec2760b2c00e4262ae3111aeeb. 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/ITUM72300900.
Woah (feat. Low-Red, PRACI, Razer.Rah, ilovethisbeat & Enomoney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19cf3484725fc0803b129450d6bf19ca8fc246b2df596b50b21b3fe5ca290a1. 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/ITUM72300910.
Blessed (feat. Cage.488, Sgribaz, Rico Pmf, Enomoney & Prisoner)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914af7608b97f8de88b0373113cb2a6735e4c273b2f6d6e85c7fe4123ada4554. 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/ITUM72300898.
Loyal Love (feat. Razer.Rah, Sgribaz, Low-Red, PRACI, ilovethisbeat & Enomoney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x348187d5115d0dbe4bf08fef835e0551c092f893e048911a7187ad5a6eaa5f82. 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/ITUM72300903.
Ricordi (My Blood) (feat. Sgribaz, Low-Red, ilovethisbeat & Enomoney)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa428c38b03c97ac8e7620038f5aefdd6665cf42e9badaa3023a6233039703cc9. 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/ITUM72300906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb348e13808721e52ab2118fe07a43aa95131e09b33194ad09e86db8825985168. 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/FRX762158678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1474c60b930eba02a897ab67a57933bc4d9979975a05b339627835d7417c45. 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/FRX762158679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56df79009ec09ca6417e0ce240ba4abe7c9bbdc49617665b98dd58159da0a8c6. 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/FRX202143589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x977fa5bc7cc5983d8659b1ce04f0df22c2c2052a468d1ec6e49237b15195ccac. 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/FRX762146212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x676eedf9b0a401e63b03b33c4b71662db6b0aac5906bd15c5b2f20d7f96a76f7. 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/FRX762158680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca54805e6e82dd1655badeb631feed887196b977431a106bdba755957311440. 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/FRX762158681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d93644b72503e46aca62f74ab0f7401bfe59e78e2aa2260272ca0b7fe540cf2. 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/FRX762158682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6011eb15406221e34240e652ee9181a36e5bef293d8174efcba13ac02c7c90. 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/FRX762158683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4407bd33e6dc4e5c200abffbf1b87154d2cad0b3b1439752ce3e26d7da596dd. 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/FRX762158684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c6b245ae3c729c3b92877643cffaca04905f0f13a4fefe92a819baec7f63438. 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/FRX452150660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaedc64830d1feb92bdcb8c37ef7b1d576a3687ac5faccbc0b4e047962a4f08af. 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/FRX762158685.