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 0x74391fb32512240a728e9ca7be9cc5dcb793bae9522cb97307961764cd36282b. 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/3f727bc2-2ec6-4837-bf1f-5255bb8d70de.json and https://artists.proofprofile.net/proofs/artist/3f727bc2-2ec6-4837-bf1f-5255bb8d70de.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 0xd0e48aaefe8fb691e2189502d7a32a3b397d5d47acb5951fb9766efbe62b973b. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ITM030100155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b74ace99d501db3ec0e0036b78fd97f4544590ef4669cfae7174bc0c80c9cdf. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/ITP520800220.
I successi dell'Orchestra Bagutti - gli anni 80, Vol. 1
I successi dell'Orchestra Bagutti - gli anni 90, Vol. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41de3d574952be2091c32afd47277a8049b4a7fdc2dd0dd946082526f832fe8f. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/ITM030100097.
I successi dell'Orchestra Bagutti - gli anni 70, Vol. 1
Mia mamma mi diceva / Vogliamo le bambole / Aveva gli occhi neri
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62dfb7d91c3adfe2466787ee34cb42999cfb86b263b71210a8276c7f9ab314cd. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/ITP530800359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ae8b666652ce843d304ab2858368191b082ba0281ce08e217e2b5f2e5a1c337. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITP530800603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x190aebd6d704be9f6f59aaa25afab6408dc07a7b95316322c80fa16cf920d2d3. 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/ITP530800029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88bc591826b5595fdfb5b3ef2f7ab2aa001b19d0637a9c81a9a91748838ddcf6. Chain 2 (Bitcoin): anchored in block 958873 (2026-07-20T11:48:10Z), 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/ITP530800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc70a3ae1da32caa434d47bc10284ae4cc032f5deaab12fd98a57f88fa383171d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/ITP520800081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7401e313fe74f77e12a9227848a8063e8022fd09ad5a1beb13777f0195dea250. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/ITP530800459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99acfbdcdcc36587c3b8f6e8411d2b1db05bb0369dba901d6a9f4a33cb488d0f. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/ITP530800463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e87df84ce2c49730257936f9ef385bbcc6491186cc9a7b9f1cbcea34fb22ad8. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/ITP530800464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc371c1d087f656f0b42981a1aacd77d32a3c83785fb5013c1bcce4a457261603. 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/ITP530800466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5983a4cb63456113cc53703c92e2ef268e704432fd7cbdcf4df954c5180b3a2. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/ITP520800205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54833e0eb1548a6b1d770a8f0b209e9e2bd95900e632cec8a80ba307d6f7040d. 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/ITP520800209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f621bfc6f1af53beedddcf61637fc5c0953d95e88512069eface190301dc62c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ITP520900085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37328f003c5477a3d4bc2565f0a6e364f37cae42f70ec34a844b98a4cf20d719. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ITP530900126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe99e5dd1b9232fb52ade12d40c7a00236c794a36204557be19341f26d78692. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/ITP541000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd473a65bd130044f2ccdef1397973839d90e526c2221ea37eeab33407e66e7af. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/ITP541000013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025fcc52d7964368436069de6b07259286eba6b6f431175f9c59e6d1fd2d64fc. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/ITP521300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e43679678487215354132a5efd6e47d59dc83051268528feb7e585ffd464ee. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITP521300203.
L'uva fogarina / Mi ha detto mamma / La bella gigogin
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c354a96f8a9fa2a50e1576c709db3ef83b1e07a3bdae83ca90e0941ecd64ba. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/ITP521300204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a58c8613691ed5cefb6cd162e9d138b1562e1135cd439673bf3a1eecbeafedd. Chain 2 (Bitcoin): anchored in block 958691 (2026-07-19T07:19:31Z), 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/ITP521300206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53f9d66a51e720ed8afe385d7d8699483c33e010213b051b9bcdbe09c20eb3e1. 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/ITP521300208.
Quel mazzolin di fiori / Addio morettin ti lascio
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1973c0bfc7afcd7aaeb8d760938d83f79e53dc9aa90612dab901604a19f7b14. 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/ITP521300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd06c0c288fd529a30a97375fdb2af58d829af1a47071cb25a725829b129349d9. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ITP521300213.