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 0x7de76b2d44ada32beeb9299b1850a10f742532cd4c23ed0c4c1046a20ca2bf33. 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/a6ca4d99-39e8-453a-8f08-4fd8bd909830.json and https://artists.proofprofile.net/proofs/artist/a6ca4d99-39e8-453a-8f08-4fd8bd909830.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 0x12b6a480b8c64be83bcf8489dc456e8f89f93713a9704360b08a1d95a9321658. Chain 2 (Bitcoin): anchored in block 958130 (2026-07-15T08:37:45Z), 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/ITOSQ1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6592dba0b2c915c0c0f62ccb97f7253ecb7eb550f938335469a570b03c15907. 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/ITOSQ1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a31f9c42d68b9d363743a6ddd456898e5fa24b9a4fd02f0d0a2ea2072624bb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ITOSQ1700008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5e0633746ec539dbccd940603aecfc8958406cd343b8c8441f6f0aa7f9f765a. 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/ITOSQ1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb3fadff53980f4bbe95d411948e26ca7921b988c42257e2ea7e4e3b49ead5ac. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITOSQ1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc085278b207e3594305af2da56ea45a651d92d5cf7fba1ca241dc52f187c1e4d. 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/ITOSQ1800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a60556b8ea7920b694ea8c7affe31e14c288d33ac16ab367d7c9ed08574c63. 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/ITOSQ1900040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0347109b9d26513656e2cca0f9246d5a54d9dff9341563cd264229315e7a7172. 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/ITOSQ1900060.
Nella Pancia Della Balena (con The Kolors)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a9ee273ed85e2071668446b6d143150918fa5ddc6240fcdababe04f0277d23d. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ITUM72000730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cc896eb49e689068c30d82cc6b00d586014e9604980d3b8dcf9ac30b9270d0. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITUM72000786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a749532ad3993883c0701b7cb4fcc8a0c4a31943d92fa45c89a6ee12785b29. 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/ITUM72000857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e89b3ea84b297414f6401d8a04d7213419905fb861fa22717789bac6adda7b. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/ITUM72000882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df7808ea37c24ec6373cbb339aa3c89001309a0c5f1c23671326a6a28f4b0fe. 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/ITUM72100093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6819c75bcdcb5450c1bdba7c4fd448170915b0143818b6a73f387a6f5c6862a0. 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/TCAHC2309331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6b119b23adc040f1f09440a706b1d912312993840eca2d094516385f11c75b1. 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/TCAHE2387493.
Anche oggi, domani andrà meglio (LODO #4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5516ab46569a366da46b13117867358a6173f3e986af51a9c79d893eb54b6437. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITT742100025.
Crookers mixtape: Quello dopo, quello prima
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e403900e100f7ee74728cc46c88ca8aef8eacf4926e3efb8f8f51a6817a0ec4. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/ITRWL1700044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf96e13e9aba1bc4b0a75790ab74539d7bd34ef97eb2d260c2289dcc158fc878a. 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/ITUTE1800030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5516ab46569a366da46b13117867358a6173f3e986af51a9c79d893eb54b6437. 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/ITT742100025.
KAWA (feat. Samuel Heron) – Prod. Strage
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7ea64bc3aa9b17a3cae6c540c14aae34f45b7b5ab6207aa9c85d1ab23c702a. 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/ITB002401520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ac7cfa721be6e666297a09dcb9d30730674aea9ca9b1b7a510a95bb580b759. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/ITB002000515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27ac7cfa721be6e666297a09dcb9d30730674aea9ca9b1b7a510a95bb580b759. 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/ITB002000515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8896c3ba2c530fba3a72e81b9704fdbabe7035e736b7d3cfa2c5af6416f3c8. 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/ITIWE1700043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2fdf5c249d86de2bdcfa5bdfbafda99fb495e2c5f938758ec36824c4b457e9. 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/ITUD51700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad2fdf5c249d86de2bdcfa5bdfbafda99fb495e2c5f938758ec36824c4b457e9. 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/ITUD51700004.