Giacomo () is an Italian given name corresponding to English James. It is the Italian version of the Hebrew name Jacob. People bearing the name include: Giacomo Acerbo (1888–1969), Italian economist
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 0x5353dba9bba2716f157918c9a1a1943a9eea01aa983acf8c9fdd4ce67261e076. 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/bb4667cc-6b0a-4496-8cd1-d2cc5953033c.json and https://artists.proofprofile.net/proofs/artist/bb4667cc-6b0a-4496-8cd1-d2cc5953033c.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 0xa504eb6588f3efc312a53adbea247a07d2b1b526414d4eccfcd3a5dbb4157f33. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZZ7S2406955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae264a973f9c95fdfb312237c1651692bee7fd6cd65e983362f333b6c04eab64. 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/QZWFW2423237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a0a86f2b025b87acac4406ae972c9e9db86e95ac593ef797405f3696091cb9. 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/QZWFQ2451191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02a0a86f2b025b87acac4406ae972c9e9db86e95ac593ef797405f3696091cb9. 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/QZWFQ2451191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc4584af4dc5fce495ece63515419656fcc8b6b6db97d84132f51a515af747e. 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/FRPZ92438380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12ee100d57b2d168d34e95e4f2ce5c2ab2ed8e597a5edb96556daf4addd8e7e. 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/QZK6J2412603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x699092f80f1eb5f6a92087185d0e762961361322ade5edbbe87fc6f78a85d043. 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/QZDA62464670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87e42ef910292c91fe3f07d8688a1dda96b2b605fbbfa2e171ee36a8a4dd16fe. 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/QZDA62464671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0f576d0b76386a9e2a86f55221d2e96624ca02a7d93c1ec8f22c00dac4b6098. 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/QZDA62464672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d221707770235b0e94c250c521cbb85a21960ea3a550d4447d5e2bd7a12be3a. 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/QZDA62464673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d221707770235b0e94c250c521cbb85a21960ea3a550d4447d5e2bd7a12be3a. 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/QZDA62464673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e8c54b1890bfbc6bbb8fd9d2a9acaf867396a07363eee466c8132eea10c480. 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/QZTBA2326356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db0b2b3477a7e621982e3673d8d20f106e0cdeb956abfc5f63dbfd55fa4a6b4. 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/QZTBA2326357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e1ea7d882873d8fe4ba64ae563fdd34e5f4811a07cac4061a91050d79b5e149. 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/QZTBA2326358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922b952759ba1b2d7325bf585e0d8e23089f976354cf7c7748dc4f941589a299. 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/QZTBA2326359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae649f9443c06ad8af09446f269b71e0803e480729acc9b0dda6331db2f1d3ab. 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/QZTAZ2346980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x150bc47c938f7cd184e0ce316c5ca620f4231da75bd1a9452cec6135d26cdb8b. 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/QZK6G2392273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52d3a9871c890a03b5ddca6372e5460ef7b53115ecd4e52789dd0a7f613c793. 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/QZHNC2336937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ed853970c8d35b5ca3e8bf1f07a357ff351081dcb1fc64ab80d37e2dd110057. 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/QZHN52350477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d35e01b69123e7a13ca6ea2bc747eb0dd7be6312c92149603db45c976349ec0. 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/QZTAS2193016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19a11671b04a14093be2ed0c07ef6233124216bc248aeebcb2348b9989ca6d8a. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/QZTAS2193017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6262274347cd35c032169e432a1fae58a2e26027d3ad827655bfe42b046815a0. 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/QZNWU2133384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de94c5e4f48e2fffe11443146e18dd164eadc5178af1974af07142962613207. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/QZMEN2166341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x874131aad0326dff81b432d358062510e6dfd7c18d4c978d402b161eb94e4ff0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZK6H2199393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c267f340b800c734795419e857b085e39f79916c1dc9556dc72e3209ffd62f9. 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/QZHNC2103681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0661e342168ced3282557a8764cc1278ea0f09b67321d42540e200371a6526b2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QZHN82119479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b79e4478416e03b908ad72650d7a9707aec8af7171c5bf38f133ef81a50f138. 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/QZHN32133853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355687cd702b1af955bcd71047f614b88d5322f8833cd33c4a4172988e74257a. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QZNWU2048962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3909b9dfb3e4c763815850272b4accec8fb2bb29e5744c1d76cc406cc2340074. 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/FRPZ92436410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3a418c2dbda319e7985fc93ec378a14a7b9a8dd281f936037f2c5f6db317558. 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/FRPZ92438370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc4584af4dc5fce495ece63515419656fcc8b6b6db97d84132f51a515af747e. 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/FRPZ92438380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a113230960af1dee2a508e2a11ca9685fcb5f4d10e9fbdbe70b388ac549a1db. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FRPZ92438390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270f282b1ea8644c2130f53f57972a1706e7020fca462fa7bead779f1bc7f243. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T17:48:40Z), 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/FRPZ92438400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb04ce81ce460018775134787b72c8afee2b79015ccbb10b981b2bbdd716d16e7. 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/FRPZ92438410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4da6b85f381e26d6a04da842c37340f300e7cddf2fa1ad764b8c23d60415ab4. 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/FRPZ92438420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacaa171b7842be9e2b82be8dafafee68fb13538dc0a3b17013a8a911c4cbbb79. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/FRPZ92438430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03199921ee2d7f0929d08b13b5c87b1b5b62fa7ea81f346ff7ba19a425383f25. 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/FRPZ92438440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398f74d3ecba42cf46f75cfef09703675906db05b788f9058e5d74c82996d0b9. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/FRPZ92438450.