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 0x5c92412ee48ea00cc83233857ef6ea274c1f23067e653287685df59acaa2697f. Chain 2 (Bitcoin): anchored in block 954587 (2026-06-20T19:10:41Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/b8ca3a13-d1d2-4474-9b23-966142c25a8f.json and https://artists.proofprofile.net/proofs/artist/b8ca3a13-d1d2-4474-9b23-966142c25a8f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Le migliori canzoni della musica italiana anni '60
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 0xf223ab1e9428696e89efa3e1e18d4ebf945a168805a5c60dfaf572fb3fbc8254. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITAE91001245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb262e62e39a82ddbf215ded9d4b211d11ce16f451ab87b3196011f7b42b4784. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/ITAE91001247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836b7cb9155fa2d05ea46bf803055505ab223920519005c95cbe7950350a4e9d. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/ITAE91001248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c38f7de60388649128d4c679ab9abd71351da87bc3a856beb666fabc5e0eafa. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ITAE91001249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8518e79a40445215b91161c6857deb10e8b32818829dab10e6c953ebe326d1c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITAE91001252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0cddcdbe1e323f4b4a984883f7cc74bbf5df98f44f67515e3dbc9e0acc2622. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITAE91001254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5955f86abf27f1cd2f089f1f7fb29a0b9184dc017289c5de6c12c24d72c17c9. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/ITAE91001257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c48534d5346483aa4a26e0600f1c556f93e1e4da474d454ee0953f42d46eeb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITAE91001258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde323f32fa77442bad85b63b33a977a8f96eb408543a4b3145fa07922903293d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ITAE91001260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92a5044bbc736f0930bd59c5d01919e1d0396aa5df6d6fd6aa914b0f18dfca9f. 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/ITAE91001262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96f4ea01b9683829884b736d54c49db652d082a94e25dfafb5644ec848c4c5de. 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/ITAE91001263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x978567712e29e36a649325f98ff33edf85dea2461e7e1a584e9f761727dc5865. 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/ITAE91001264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84556b07151bb5337280908b220b0dc0ba375bbb9cb6654858632ae66992fd1. 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/ITAE91001265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46101f71aef8b035ef25487ba06b0848117774d8c91e233b7016f102ff20e60. 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/ITAE91001266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45ed7c5d0716324289ff72e68972f0b67b1ecc8f580761e07a6ad20debb0cef6. 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/ITAE91001267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4eae0a002011d58407708e2aaa0d0ad03eaf7753320908e5f5f44c3100036ba. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/ITAE91001269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1e7703965611b7071d2284c4557b1b69f92bcd2c0e5fd0f6643177dbfa3224. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/ITAE91001270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58c7e61fb22f70aaca322a64a18c4d82d87740855dd1884fd6329d94c149a39. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ITAE91001271.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec0deaec63ab76c34ca8416a39855a150756a0ee2663250438f343a7c44ca1e. 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/ITAE91001273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519046674393f0cb27d4080f2c2a5c08cd441e33da747279af7a190eda2de7e8. 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/ITAE91001274.