thumb| right| María del Mar Rodriguez Carnero of Chambao Chambao is a flamenco-electronic band originally from Málaga, Andalusia, Spain, active in its first period from 2002 to 2018 and with a retur
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 0xff946a16d947f234b7a2cb970df2bb47b4f61c9d4ad2c352464c2c862a99a4cc. Chain 2 (Bitcoin): anchored in block 953657 (2026-06-14T16:43:25Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5091870f-6f70-49e2-b1cf-c1e7446df8ab.json and https://artists.proofprofile.net/proofs/artist/5091870f-6f70-49e2-b1cf-c1e7446df8ab.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 0x102c07781c91890c5dc9d42075de990d9886713eb9c9e95cd4863d822ec60f39. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/ES71G1840320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9851ac5346414e0b98e2cf3b3e7d9d8297702c8bc775bc83715b9a13c1f6939a. 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/ES71G1840303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5110d5625ee0c296e78153794757f3e617b6ae5ecbf66871f887b961b346c5. 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/ES71G1840304.
Camino Interior / Volando Voy / Desconocido / Olvidarme de Ti - En Directo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b390ba0f529e5db9ab7829397f03ea0d373d4365b40404507aa22012133a24e. 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/ES71G1840321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c1aa03e04c510f9da9d6312e5777a09490bfcbb35fea7dd10ca0250788f3df. 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/ES71G1840305.
Como la Luz / Una de Tantas / Mi Primo Juan - En Directo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f5094e7e358a944b01ca7a0e39b8821797b3d8e2d10fd49c66bcf30ac627b6. Chain 2 (Bitcoin): anchored in block 960241 (2026-07-30T09:58:01Z), 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/ES71G1840322.
Instinto Humano / Playas de Barbate / Los Muchachos - En Directo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8a5bcbfccf881865eb6da54fcb2df3dd77d0e68dc241727f6b266e6a1cc7cc. 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/ES71G1840306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a40a4e2c59b6f7c73af95ad5a25a53c756cd8e8c36cd8388e7ef428f2e0b4e7. 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/ES71G1840323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1616c362608482436e83e18226e2d3aac42958f07dce0e8f44a3477e94a79b. 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/ES71G1840307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x658cc6cae45903103934a52fd601bbdce610bb3b5c1e45524ef1514020c0ff2d. 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/ES71G1840324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa728d972b7fc12cd523123382d290e3a69b82e04387d45a8616d9d3ca9a190. 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/ES71G1840325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16bdbf1957630eae1791ec5e70dda42ccec75a865b87c57c23ca50c8aa9d3d5e. 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/ES71G1840308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637ba8d6e566b0e8f6fb83d8e92902f747b6bdff5ac254725c34b53c5e844638. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ES71G1840309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fb55713824a46f41a9236d2ba16ffd3760d5dd8a86a05caeb2d7f3fed3d2a4. 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/ES71G1840326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5e649d6866ef066555e5a8ed495e698c2fc592157cba424cc18ecfad7061b6f. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/ES71G1840310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b3e109fc7cc2388661252b646178dc0b490fe3b4f23195629b49f4d34cad44. 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/ES71G1840327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3281db54af8c2a6282ec60a9df3e9d99b2c933adf9f078e807fb6057f5dbbe5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES71G1840328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30bb1abdbf1210ef31b935c1a35373e6221c4f61885f7d99e4c12491f5466285. 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/ES71G1840311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee261a35ff43da8e8336b2a317815c705d952583f00c23814476905611b62edb. Chain 2 (Bitcoin): anchored in block 960207 (2026-07-30T04:47:22Z), 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/ES71G1840312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde7fd47b3c28abfda8ab8b10be991c0891c9b57766e447d1055cb094f8855c58. 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/ES71G1840329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a0951885244188504698afb790f95eca47f34961e1d4057ab337b468a3e4e2. 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/ES71G1840330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe845fc7f5d614a55df76a022bf629e69adf7408232d6a5c4fadba7adc6115068. 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/ES71G1840313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3244e70b87ec584e9971de8c816c8abc86790374225d71898889491cba00c4. 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/ES71G1840314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa517c2d65103f0ac6bbb4792664ebc8df3dcb0592e90624ee3b9ba1cdc7544f3. 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/ES71G1840331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19bef043b60e16c61d5c135cee3be0dc85e4adfdbde3874689f2f12047a7e00f. 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/ES71G1840315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe593127a206a24a097ed7acbc5f6e6d52634e0cc01858b4168498f5071e85942. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ES71G1840332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6346120a193dc9c6600678aa699c9d2ccf09dddca7bd5f70da22fcc2060205e5. 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/ES71G1840316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x673fa4dd75ee90c10932d5802d716d7aaefed1d949b4a22d5cf013954a9fa212. 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/ES71G1840317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbc5980c879b93b4760d53c659ef16bf094ad790f933ca23234f32bd18564f2. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ES71G1840318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc052b66dc3448b48a92e28a7cbafb7f3560a7c9142489bdc1d77268ef60a8783. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/ES71G1840319.
De Chambao a La Mari: Último Concierto (En Directo)