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 0x36d3ad16212cff816a89b20721c64dfbc3ceb73a21ee2324a5ade1ac9f104837. 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/60e53831-7b23-4f11-ab85-a2ef329f8cf7.json and https://artists.proofprofile.net/proofs/artist/60e53831-7b23-4f11-ab85-a2ef329f8cf7.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 0x1397ab7f3f83c5fe8cebe109da51230bc11097c0cabccefd207a8c4a78ad5b4e. 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/AR9ME1900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b03089f4ff293e695a700bcc438aa4c8c3015440b5b740605a1dc454a8123dd. 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/USA560306638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545eb835ae1d9a763f7c559946837d296b632a1f4904c566b5724b301c924639. 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/ARA640800024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6719ed8c039c30c356e86cdf377d8f10396b254567db220310482c70c68559e7. 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/ARA640800026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9743b7e5159ba542f8bc6985f0179e6860ff286969f207d5f4144c4399bdd61b. 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/ARA640800027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa028db97b05f1ed6bc603a3fb627b409d65830c9d1e916fa425051daff79ea1. 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/ARA640800031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cee7c9d8bfc9ee3767566a1f0475e66d3c4bc73479d4e182de1a8d545eb0b0c. 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/ARA640800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dee59292615521623f1a2371ea4956d5ea3d9a911a42097fa8ad16ce0de2af3. 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/ARA640800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e6d6711458bcf4527cdcac6f92db4068899b2f5ec445793c561e0f48e8dfa81. 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/ARHXW2302609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3887f37b343965769d0bb37b44c4e1806e336d4339f5cd4adad55a8a047f61. 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/ARF099800064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ac0b73d96431923bd6036daa27f9b063900a5974752833fd314cabd9661efd. 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/ARF099800065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a1b7156a70e447bfa1f269f7602e8bb8cc5a806331944faefc4e5b0dbe3b200. 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/ARF099800066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ddedaedc5beb6ec7200734c70facd0fed7d17c732650c9297b5f82a701a91e9. 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/ARF099800067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd923e9919c41eeeaa27663715b17d0e09cbb3bc5294d9290a34924cf03f0ab27. 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/ARF099800073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8139813f97ef53cb76ae04a5303d0dd608a597875135b016ca4c0d2f7afab9. 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/ARF099800074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039a94010786786f027d939bd381653437b0c267ba79a9e371fec11ea63c662a. 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/ARF099800075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeae01b81d61adc188965ebfd6416034e75a1971d7291a586761f19093f7c53b. 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/ARF099800076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49bec361d1f75c2927809bad1579ab2216c758a3037da831972bfad4da68d62c. 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/ARF099800079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fc81fb688a50c9d9d1f9134a38bc01fc644debe1bb792c3719db78c1e53257. 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/ARF099800080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cfe4f1f93648de5b47046a4a665dabeeced9555ad29814f700f3c86d91823be. 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/ARC019700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc4aa7a697d644b6c276e48bb45734a7b0abb0eaded6eba18da8a6a4f6160424. 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/ARC019700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242c9429f4199bef758260b0ea983ee67fed74feb8836cf3b3ecf1a607832888. 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/ARC019700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b0a3fcdde642ea1386a398e77726480ea755aefbb2cc62e2aa5cecfb039726b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T15:10:08Z), 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/ARC019700005.
Chacarera Santiagueña / Elegua - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5c4f5cd436c9c2ee41450906407263ecef7f6717bcd9363688a4f4c71763fb. 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/ARC019700006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3fdb821a46d66403b051887162b541a5a7fbfe6c32e4864deb131317a4607a1. 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/ARC019700010.
Tiempo Reflejado - Un Homenaje a Manolo Juárez