Alessandro Cortini (born 24 May 1976) is an Italian musician best known for his work with the American industrial band Nine Inch Nails. He plays modular synthesizers, keyboards, guitar, and bass guit
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 0x72d6c3ca2ddd8ecab1fc969613a8e13814e8f0c8c956e713dda1e75f8d26a46f. 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/4957455f-9c6d-4bb9-8226-ed20595e2372.json and https://artists.proofprofile.net/proofs/artist/4957455f-9c6d-4bb9-8226-ed20595e2372.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 0xb143e19ff984594c6f36e68d45f2ed44afc532d5fc6bafa6a0e044e668d53982. 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/TCABP1324103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7106dedfe0c2f3a32e613a20b1080c2fcabca576f34c2c5e5a7658985d336d7. 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/TCACE1531638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa36f5a5aaa744f951190f1cd79ef6e15c0ca0a045d10a23cfdc58ccad3aac241. 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/TCACE1531639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b14b6ae3fe35d08c4dd2f6078da3806fff1d2771f9aef9c57d028dc1ee62a2c. 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/TCADC1767523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3ed38f5ec687d7f5b52ec7afc416f547d3d99aea4a13186ebb43e37f535b8ff. 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/TCADC1767524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aa1148d03c478f4622d98d720c8460599a13539cdf5da143f8d095361454f73. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCADC1767530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3603d538340f68f79a621ab749a202b935f0df941a04aedf0d0edd70fc6881b8. 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/TCADC1767533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ca2884533b587f7bbb262906581ced3c8a9fbc707e9b42ecc24a8363c228398. 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/TCADC1768791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fdf8e9c1a4c8b4c2e104d7577d13f03aea8bf8fed6b48bca39728fdf3dc598f. 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/TCADC1768793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc52f4c80ba4365eb9f4766ed27c46da6410c73c7adc1130610ad125c253784. 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/GBPVV1701868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d429208d4404eae0e3392785e5e045143b63f3276e0e2e3b5716ba9000d30c. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/GBPVV1701869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b0eddd60e216a1b1772ce0990f4d8b5c607f862a3cb626b5d117d1c8530a23. 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/GBPVV1701870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a10814eeb0a6d6615ba5b24792ce6f518c501a8728f35aafdcad011519b5b0. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBPVV1701871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694fdeca26d388faf6a4bfdc156c05da282f4619cac24aee0d8bb031d62adbbc. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/GBPVV1701872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf86ecd9a42976a7816478eccaa8d3e65ecf22ab78d2d32ed80629ee4ae4e901. 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/GBPVV1701873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df59c17f98becc4e1bacdef906c38de73c902db396a41314378bac138044ba1. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/GBPVV1701874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aa76ddfaa69336ed07465742d58b1716b859868d7246879c84bc5ebeb9e94c5. 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/QM6P41863734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3707967d5c94357d1a6bd38861e2c2b46146f340458fe640b9964eb98cf68b4. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/GBR8R1900173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1aa751e6bf26bb5aa5b432ad4f5f3ce734477c02888b76c56e8b057eed947b. 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/GBR8R1900174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6479befed7821cb18156d27692f249ea772366484dc88a3459119db06d705b. 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/GBR8R1900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc76f305886cd6991fe21d34a27a718796cf6e25de399ff462c358baef9ef47be. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/GBR8R1900178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1ddeb6d407ab1d4bb93ed3f4a57088402a3ea854e4681abd81a6029aa7bd52. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:59:57Z), 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/GBR8R1900172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c0de9a6444b859f0573e0e6630fb44b9b1fa8a1ba42017714dee0cb297c060. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/USGSS2000063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04b4a9f88d51009f286ae036ce0f4f0f75a9ed0a7da6151caed6cf08a92f59e. 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/GBR8R2000218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7a5dc15c50f0f50e15a47213d9ac1e49e0c0ba580a9b24a8de1295580d0968. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:51:34Z), 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/TCAHS2356215.
Concordia University (Live) [Montreal 2009]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50da3568d309cf3653f1e673639f8a32594a3e031595bd699a482390771b57f6. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/GBR8R2400118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a864606fa6746a78e9c5bb41e4b7792d793b5f60c3f27e070337c0dc2242fa. 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/GBR8R2400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b7f0dcb325258588a93fc5b1ac00b205bbe4e6d78e2c254e7713080be1cd7cc. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/GBR8R2400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x095e310e317d19f261a19d570e9dda03f5e8a70d60c5e214deddd8b8401006f8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBR8R2400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86615f96b17627926fda7b996d829afc9ed23b6a88e1868e0d497790d30ac26c. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/GBR8R2400120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7994c65dfd819fcf4617789a5a87607ea8a718aba1bc7f405d0642abfd8822df. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/TCAJH2599655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb3c5948356b87f85c8829410fa22551c59298e2ab4de8295e3719dd47526013. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJH2599661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44b00628bc0081d64160c394f98678668d720015b98269eba9dca3a45d6f6727. 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/TCAJH2599677.
Il Mostro (Colonna sonora della serie Netflix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86137a01d4ee7ca76fddee4f3d8bc01976f12c6e0b948d697dc9a87074f78d6. 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/USQX92400156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb62e662644bd4e58c674661476baf17e5d134e7fb3339d127bc677d8a0b047. 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/USQX92400154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97de7a829043cf9554e58e3f0ff458902f5b76e5eced9689c2e2b7bd8329c271. 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/GBHFW2400086.