Cabezones is an Argentine hardcore-alternative rock band. History Formation The band, originally from the city of Santa Fe, was formed in 1994. At first, their music was punk, with songs such as "Uni
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 0xe788b887fb9d686c46629a8e73634266d173c9e507818cd7cb4e0184261587cc. 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/04a38c8e-eb1b-45ca-be83-0fafdf2b205f.json and https://artists.proofprofile.net/proofs/artist/04a38c8e-eb1b-45ca-be83-0fafdf2b205f.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 0x08f3d0d3bac791f97c1da665698be542d0021638d4c043b2b0ab34d037605880. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/ARF109902530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7335de47ec0663182525cb0ddd04d905606a9ac7f2e70bc713610b299a71672b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/ARF109902531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09e63cb73c757eccfa149756ff1d5c3589987dd52ea44a92ca40a66d0d0ca5b4. 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/ARF109902532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab01bdabd350960d96704c93ca0a119bc1efe2674eb12bb5a7c3f2364f965b8. 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/ARF109902534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741240f12c4d26afa0a54f9232f588e74ff58d37fa3b4dd2ca6faf83ca82486c. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:34:23Z), 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/ARF109902535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f91fe09f4446836cfb28b1e6b84bd75c3a7ac6c24c7f75417ee9a40510d828b. 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/ARF109902540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97f54cd22c177d5485aa7dcea83f8a9f6de65d6c8d8bffd32c3b01b51298966. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ARF109902541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a8f5375133194ee41eb03e17dc0e130671ae72f9a7ff43dcf9d248d9d5ec89. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:37:19Z), 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/ARF470300041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a59d0ab5ab1bddc5d2ac30f3e10d8ac79366b03396665ccb918d43a8e81ba2. 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/ARF470300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb2726924fcaf03b578ef7e20e791491e6b2151149b03d5dff2f56f97748eaa. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:01Z), 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/ARF470300044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580c49eec62e5424deb283f5fee648c33db6080ca2d20c4a50460d67527f1730. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/ARF470300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a12225663663da2b39bf546fcb98e71ac773ac6abe1247ff79185f826a57b7. 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/ARF470300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d9e29b00a99b983d1c5ddaa3763bf8d13323ac5fa18be39d6c1e705aae141b. 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/ARF470300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243a4aa0f25e0e06a6fc081bef651d9ade1aa4a80d530d155796758bc89db76c. 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/ARF470300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda1e1f013d7e82e50adf7fb519af06d8df0ceb76df289d38d646058ccf009dd2. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/ARF470500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54112789343278936a03b3a74344f855ebaeb66cadcbf21bee968784966d379d. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARF470500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80190c49cfc2885a065091016d92ccbbfab5bba95f6861db847635b7ca7f2b34. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/ARF470500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0d52decc6da5357e5322a8462dbba3eb890da6dbc70aa8bb40c9ba3afb41f1c. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:32:31Z), 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/ARF470500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37f8a046ca7e70b7d55e65dca4744b394cabdd1e332532a82b2a995a869e0ed9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ARF470500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x047f704dd9a6297e76d75aa6e0c25df0b0141d0e252457794b255a57500b9c61. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:51Z), 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/ARF470500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8f88dc8077bbc5ec6314f14bd24796f5a912ba1590a2135486f508243e1f45. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:01:41Z), 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/ARV470600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c75f6bdd540650fd694642c5e2d7c670e5dbc9591fc32cabcb54bb46e58be25. 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/ARV470600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73348434c3644232c8b4fd7a58635df15c7dd5ef0fc2b4a25fb12102133df789. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/ARV470600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73bb3bafdee0e2d37d63ea9521937871a644af45ddce4b319f905e5a0ffc5b1e. 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/ARV470600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79831c733fb49b59a171a926241b43091aded68967d40d6d3bb770e614c8654. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ARV470600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2ac384d0e05a019a6824e7d6a180146cc4cd2adfbfe0e0d198fbf48494feae. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:23:35Z), 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/ARV470600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5ef522dd7a3d9ffabcb0be5f923dabaefd10467fe87073d440530226f8239e8. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/ARV470600010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ba0896f755aa380057f80b8bed7219d770d6b0dff27bd52fce49b7e2bda0d9. 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/ARV470600011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96620b5252c9486f7ab3545023a1ffbe07b24eeb2c0358534ece10e1cd23fd7a. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ARV470600012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51466c22196f03c68645ca5e8b2779bbe1c83567581d193e69b9e189200d6166. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/ARV470600016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d4eac3bc6c6dc1392916c1df7a8c4fea9dbf812441179edb67591b1bd8816b5. 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/ARF470800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93bf82f8bf24ae32cdd8ada5ad432f341af6b9af68b8605326f33968eaf0e8e6. 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/ARF471000082.