Chamaco is a masculine given name. Notable people with the name include: Chamaco Ramirez (1941–1983), Puerto Rican singer and composer Chamaco Rivera (born 1946), Puerto Rican singer and composer Cha
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 0x77b7a6d2cd9c4f2206ef1730cb4dd42228e276ef20f61b99de7c646e700278c5. 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/c8c281df-6047-4f2b-b935-e06f4ae2b16c.json and https://artists.proofprofile.net/proofs/artist/c8c281df-6047-4f2b-b935-e06f4ae2b16c.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 0xa7cd8c84dae7d71ebfd98aef31a515126ee1a31c03b7240350022c2d7d3da678. 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/TCAFX2174533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6be16eb3dccc5fe24e0af928bc1732ac91fd0920251afe392c7931fb219238aa. 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/QZHN42171078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e4038b4f06063401997f5aea87937bfea808ae7567482bfc1a441a82607048. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAHT2335443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9f932c2c450755a52f3865d455b18fc4f331833e7649e2f9b24e8d7af56546. 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/TCAFY2149505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88130e8f0c1bb4d806d65af4568e95b9c07299dadefc0e0c0d5c8b059fc9b699. 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/TCAGA2289130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1751b6b82d2dc19478d7e96884b8812ee5e7b322919534dbecddd53d747cb5. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T19:47:27Z), 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/TCAGA2289140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf06a1e32e224a00d98d6b6ca9e0bec98aee68b28c79ee822a2bee0ce4f07e1. 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/TCAGA2289144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7448df06d86b4b76e2a143252f981fa0fc0ec651e6d49025f496f8ba3eb691f. 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/TCAGA2289442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4beaf4dbf7ff1ea9530a33c7439f274a2fe8cf5254b486ae013882f37dc0adc3. 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/TCAGA2289234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1244b27fcc682f8a8237176c66bb76f0ddcd3cbf7441ab2e6e6a74c3a7b50bd1. 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/TCAEE1986646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcbe00c43b9eff8008db1e3ee26ed0dda1e6fee4d4b15189343f69db999b1ac1. 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/TCAEE1986655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89055109123160950d3a5d8b8c6b4dabfd98750de647c884fc07a230e1358798. 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/TCAEE1986814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb292cd3b4082e56c7d0bb9888773f4db393bb2914a47f9af6d62f4a909a867. 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/GX3Q92527083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb1636c2c59e42a60db10a8c1904f71fc20b6b785ab62b6f757ba78d434004c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZN882542478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34060457c0158afa0a053ef3528fef6eeee8fd93ef9359eef689a69722238a6d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZN882525188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d45ae3d7d1a25c4feb7e727135a86488f36bf60f3fbe2cf49a308549003a1d7. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZN882521485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf59b7304f7644b00f38879a0b0699107223b50b2a52c6c146742bbc8807de357. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAIM2439533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf074de5573e8332a3b99be91e3c7d70f14ef90908e1fcd0e47d00c52e1201c43. 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/QZRP52447269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ac986828040f836b5a8ac552914d741b7d694692d9044d0221ca51833c018b. 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/QZNWZ2434945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28082a838b6953f4c94f2f4eb3709e7668fa0eda2587cecea9cc4aab07273d7c. 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/TCAGS2370975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1bf99a9adcae79aa46a4b4fc26b5af62141d926ae30e73e78eadfa51afdc25. 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/TCAGK2208959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7215faf5ec849b8423ac1f05bf364c5f41162659ea71c65a59439c226f8efaa. 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/TCAFZ2266014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb29ce46af957d0510cb6e6f1856832e38416525ec3181758a1a25adcd1e865. 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/TCAFW2148507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9f5fe6d1448199d160f4a0d8e86e72583c537511f9a2045c0b9316c1fb97ceb. 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/TCAFU2110592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6b4c851a927a76a397154bc084b301cfab3cce1ebb88083d590ae64c75614c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFR2167124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfada86d3725a2deb7ffc952a09447d14e4971bb950b53f8a96d479200ac3df8. 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/TCAFO2124785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3820d35d9fe937919b1f38d0cc5f55812e07a3729e7fbe3aa3ed75768f21a25f. 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/USDY42149278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8cb7d44d4b5e409356b04a71e1c3a036dbf7fecf875ff6e9964280c70fefdb0. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAEN1981051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc3154e8b930bac73bf8943a0e92244875ea2662baab188671b95303b59f512c. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:34:56Z), 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/QZTVM2381590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedac361ad4e420835b39bca765d0c4f3216350101f2931d1b4d32277acebf918. 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/TCAFA2098020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7594cb0dd4c2377dc9567c70432f3cb2212f470fabfa392315dbe866eb860675. 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/GBLFP2159197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14543043bdf0bc0f3fd19e50171682cf6b4be6f81ab5bada59a6c9128173038. 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/QZL432000020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2c766e3278dce906523ec9a057dce3e7d659c9df1f7ebb8946cafdc09ae402. 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/TCAFO2177607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a94cbff5d5b391049ce551313f98d3eaa34c1930b37aeea75d11654ad27dce. 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/TCAFO2177658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0312842038f82c2a62031082d1e54a58555e45a368ec603a2e5f56e6a850b83f. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/TCAFJ2133464.