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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94d19b49065b48494200be2e6d6990341b1a38f4c084d20899d4740abdd0530. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34c5914d-6467-49dc-b779-a5d161da54c2.json and https://artists.proofprofile.net/proofs/artist/34c5914d-6467-49dc-b779-a5d161da54c2.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86743cfc33b5a6588e0f042fc6544c3f1c14078593692730824b701630c0a5fb. 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/SE6I31938533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7f0bc966fae9c29dc93878713695cd69bc07a8accce5b7436f62bf31e356715. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/IT2J82100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25fdb99d5ce51d8e1df8ecfeb0e7de968c49c3b8dd86b641da381911184ad775. 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/IT2J82200027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06cae00dda9c28a5d0288e03fddf9f1448117dac7e1c3e388226a3f7034d6fc5. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:09:55Z), 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/IT2J82200046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9232f0a09a0a242c521b8216ba5c26653e9258de83fc321f642d774769b4c9. 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/IT2J82200047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5896ec9cbf7a33963bf87882c7a8b116168ba8f942548a3311223ba0bb31cdfb. 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/IT2J82200050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ef0d678d90eb0bcf57a0b7685d8056c4dddd4cf0c81529767331264f141f37. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:56:49Z), 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/IT2J82200052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79597f1d15f3bbc10d7dd0507886348991539e196bf8f056e6fccff7fd9b8bc7. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/IT2J82200059.
ARCO & FRECCE (feat. Altea, Alice, SANO, specchiopaura)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b96b44da11882bb5542b8ee45e0779fd130a81b685d8986d58ed985eed481dd. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/ITFR82200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb790ff19cbc6df2461817b406ad8a2641df49c0bf36281c09a93de98042cc3ad. 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/IT2J82300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeca5b980ebfd040ec0f024d0be6b40a4013128c032a2a65c31cf842a89fb91c2. 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/IT2J82300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb9383aad12f49a958018b3c0b3a6c199bb833cf63fe1ae5e8e9a6d9755c523f. 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/IT2J82300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33c66d18f806c959dca0ca36828b7d20e800602ff7ee98113f4b66125c69456. 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/IT2J82300043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaee623efc0365b8c445019e7e999de41511b0df7dbd6ee375f6f702ff3e7e2ac. 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/IT2J82300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4ba7788125eb1bb7027b1fc5f091b28302701567b027896ad5df4338fa2028. 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/IT2J82300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce671b80c333f93c5541baea5d733a282a272b5bbce617111abb95a96bd19efa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IT2J82300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e17c7b2fe171dee204985370e09f3b66307e1b5bda5a59fdd22bdf3c99291e7. 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/IT2J82300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f025d2db2faa7d61aaa8997ec704510fcb618c465523fafbb45da41a2b68f8. 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/IT2J82300050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0c34c5ad2c2f679d4103a2db32c6b3a1e96064dbc30c2e297afc3916df9561. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IT2J82300058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d9f32771ce43ea363483c1f64c2e0b6e54cad8b0d5ec3451f8d4ad7d4bbbad. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IT2J82300053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80ba497383dc53093cf6258ec74a12e2a8b3d6148a4d7e6a86017ce8d81a8a7. 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/IT2J82300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8179b52c8651fb21e3705fcb846a701361bf4666b0bdc8c2366d32447cb34cb. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IT2J82300062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2042c376f36df3a3f9f770d9d66084625e79bbd54845943f4f9fafd9e4ebbea0. 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/IT2J82300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b75f72be54e2c877cbd36e20995907aeda9fec20d4e4215daecfeecfa5ab047. 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/IT2J82100039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddf3a38a832be5dd191ca34a6c9bce6e62be884a993ec39dbf902f44f460854. 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/IT2J82100046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe369d8b3244c60efa440233466fb6c99d3d60ec1f1b07e7f21e80d164890b815. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IT2J82100047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecee23f24e6caa703d71a3b41969e6e51db86da9046b7f7cc0b6965be3e5fa8a. 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/IT2J82100050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf76e802a367e22adb35edd8d25dbeec7e2cba6473b0bf20c3d8b7fd21d63bf. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/IT2J82100049.
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