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 0x24cb20baa45db1160f59d6446655afce32c333df51986bbcec2688d04a5c8430. 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/30ce879c-eaed-4ef3-af24-99e8ecee33c6.json and https://artists.proofprofile.net/proofs/artist/30ce879c-eaed-4ef3-af24-99e8ecee33c6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
NOTTE DI SAMBA (P. Lombardo - P. Lombardo / P. Lombardo)
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 0x09574173411504871fa6d4b8ebed86ac6d0401232e303a5fe60fcbb21ee0f23b. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/USA560533908.
FALSA VERITA (P. Lombardo - P. Lombardo / P. Lombardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x697e61d7b216f4c35a50145fffd74e3cbf3ebd42a3794a4f9b8e48d13c34d8cb. 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/USA560533909.
NON SEI ANCORA QUI (P. Lombardo / P. Lombardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8235683073cd8203336a86c498e1c0bdf48abaff8499b7831ec992c13c8a96b. 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/USA560533910.
UN ALTRO MONDO CE (P. Lombardo-P. Lombardo/P. Lombardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bff19664ce5d1eea0fb84fcbeaea2402f00174375108325bfc616fa8ae3fdc2. 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/USA560533911.
NON HO MAI ... (P. Lombardo - E. Ingrosso / P. Lombardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a697e0fb2ef04e80049945fd6a6dd7404de3892dc0559e407091d3f381ffd2c. 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/USA560533914.
NIENTE PIU BUGIE (P. Lombardo - P. Lombardo / P. Lombardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ae6b02ad06ce0888719cf4a47e2100e104b74e45aabcc66df3a4571006423a9. 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/USA560533915.
MOMENTI CHE VIVRO (E. Ingrosso - P. Lombardo / P. Lombardo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cd10eded308948f7adc65e5cdcf536e943608570dc0e64a501ef6870c96e9b. 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/USA560533916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeff306132afe9c63cb32e6c9947b665d24008105e7bd9495a9b4723a27a57be. 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/FR6V80608823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cc39b3aa71004bc658e4e725889063cc327fb997d97382db0f75ac4dd58836. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/ITS040400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe418c39488a59308f1f75203b0b5f2e6f595cad4c03ca6ed05646ab35acc7f7d. 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/ITS040600080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd9819e1f12dad417416b0528b0a75f20bdd47b9636af0a5b97ae93a7d0dcc15. 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/ITS040600081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f3f503a04f777c7a3dbcbce5e79a7f1c2d6a6d784ae51b3c70ae928d6ad432. 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/ITS040600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0590a19a379707382c06830c99a980a040ffa8b40d9c79230b961320b975bc8. 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/ITS040700732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cc39b3aa71004bc658e4e725889063cc327fb997d97382db0f75ac4dd58836. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/ITS040400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x785580a1a973ef2bf604e214a6782ecdf8d270071ec2014f28bffe347e8b7218. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/ITS040400268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a7b1c210c0a74a2e9ba10f537c89c1857f51717f3b1398010cfc22c111d94d3. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/DEBL60818141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa38fcbb0addd2050b003851c110c65f7c16bf97098988508445e5fb872410f42. 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/DEBL60818147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36cc39b3aa71004bc658e4e725889063cc327fb997d97382db0f75ac4dd58836. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/ITS040400259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b7ce48f233ed8494a3468268f1cf957b585bce02b2345f2492045cadcce8ac. 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/ITS041000108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb9d3d842b16822ddab87c511c5d503eba5aef92420eb1937e8987385d03a82. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/ITS041000111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcf8a0b15834aa60ca209f3b1c050a810acb15a0558ba58210c6c0ef2fed16c. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ITS041000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44937d49b4e2abe16ef9513aa19f2e49dd2ae0a5955ff3d5b7a468c049d7eb6d. 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/ITS041000113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x882837277b441b3006fa98cf0248ae9a428cbfcd0cd7578b93d09e25e1b3cd9e. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/ITS041000114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc20e1aa7610ab1a6636a9a651183f37f7728c243cdf3a55a54bd6145b2eb0309. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/ITS040600085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x809ff935aa049c827539d526d3e3d7df5eed0eb6054e61a7dcc0c4f018a25600. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/ITS041000109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3d97a08794a182cccecad0a5dde412eadef4cfb435e6f1ffb9833085c1ccaac. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T07:48:27Z), 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/ITS040400260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce0ae612c9065299688d820a415a42f6f5e263aa282f7752c4dbb9ee0cd558ec. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ITS040600079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21249be1cba5682fc33811ce5f07a2b36f2f142281b589d5b3be5aad618f78f0. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/ITS040400266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2be483d466b1c496d7f8ed5feacf43325265f1f23645bef19b402578d3d5c72. 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/ITS041200379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0654dc4aa3891287f7ccee0d107aecaac147c74bd7b1f22d3e8be327e5d0db3. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/ITS040900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd42b6e3ab27fbd02ca0e6b0aa4171c89c4ff0bbfb3c2f3f23aab1351ba6516f5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/ITS040600087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82e68494edec37b1ce8387c68c6b6dc7831a7c5d8c25387e0d2c314f8b34f77. 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/ITS041200382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadcf8a0b15834aa60ca209f3b1c050a810acb15a0558ba58210c6c0ef2fed16c. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/ITS041000112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a81d6df9b4a60c6d7df7bcea36e5fa6d0476706eb168cc05a3cb90571eae37. 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/ITS041200376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1761a1fb3f8abae2bdb1833f3269ea6aa0dd2bb7d0ec14eae944f67c8a12958. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/ITS042300036.
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