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 0xef5bddd5611b3f54cd84161dc74170aa5cef69eea328cfe739f3aaf173fc9784. 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/e0ebf86e-dd35-4c07-bb1e-837e3544c9d2.json and https://artists.proofprofile.net/proofs/artist/e0ebf86e-dd35-4c07-bb1e-837e3544c9d2.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 0x28eace66d6b284a5598bf95f77366f04a45792159d282defb16a08e9da9c2ba5. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ITB007570616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd540f7408b7029fac29599507676b60b5423dcb81043d41dbc510d9b9c5d7e0. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/ITB007570618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd354467f3c66dac5bfa917ad5568649689cfca03411155a3faa6486f4d37f3d. 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/ITB007570619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f79d43d8d8c237eab172736ec4343cb0a383b6d2ce321f10580c41a7d4116d1. Chain 2 (Bitcoin): anchored in block 958407 (2026-07-17T12:08:48Z), 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/ITB007570620.
Viecchie, mugliere, muorte e criature - A
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67ac3477b2cd4d9b909777864c1e0c36f7cf70fb7aa28f3b3eea7aa865f3860d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ITB007570621.
Viecchie, mugliere, muorte e criature - B
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x339746734039a1cdb657dd86585607db48aa01a9556eaeb2b857b72176545a43. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ITB007570622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x020709f303ac21e021fab21fe45bd8b6caab2ba2cc47a877154b68bdc037df6b. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/ITB007570623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599f6325ac0a10140b4d3253e0ca565df9ad6df46a7010c94eeab905fcafa19b. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T00:53:33Z), 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/ITB007570625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f52699387dec1299006a8c97b9177f5678573a4928bf55059cf36c66bad27a1. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/ITB007670584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18728711a4ab7d97c8003b72d53d8cc1bf3e5b87d479dd6044c9d8dac69b01c. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ITB007670726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x507442993e4d3b0b6de8dffe705fff6dfa922e774132160ee967106517c666d3. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/ITH529410670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22f31a9c37308d5f36e3e3257ef2aab88389a74123559eb2baee863d0ded8c87. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/ITH529410674.
Zitte! sta arrivanne 'o mammone (feat. Lucio Dalla - Enzo Gragnaniello - Raiss - Zulu)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aadbe3823291ede88d61bd1460aa11dc7dabce55057941240a611aace63df35. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/ITD560202361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x070b3f8693b960fb4feec6069f1214936ed2071a844a68a742844d4d40b0e43f. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITD560202367.
L'anthologia funk - Dagli anni settanta ad oggi, gli italiani che hanno scelto il groove
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f52699387dec1299006a8c97b9177f5678573a4928bf55059cf36c66bad27a1. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ITB007670584.