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 0x9d1e01ad4a93d5b94c704a6941ce8cd453864f54051db2bb4b04f7e06b946988. 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/c105bc96-c6cb-41d6-a9cf-739d3dde1ee6.json and https://artists.proofprofile.net/proofs/artist/c105bc96-c6cb-41d6-a9cf-739d3dde1ee6.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 0x2a5783ae439e2414e6f2850fadb98dcfa925262f490da176c62c8c50dd380925. 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/QMEU32308856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72f69a2cd77f8d7c3633e7efaf08b21aad73de698d3a12e5e4118884bf99d03c. 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/QZYFZ2418043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc111cf4c6f454268bbb31d1fd6aad47b566bc2dd6675a474a1954f649aff6b56. 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/QZZ3N2400050.
Quizás En Otra Vida (feat. Luister La Voz & Dj Jac)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4000104b16c99194f9c350cc73a19ec458f94657b098cd8e4bb4218de671fe8. 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/MXF152400464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67b259da014fb45b4792ba2f75d959c4a23c40fbf5b502530b31a54643261e20. 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/COSO12400119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc9941dda09751e570d80d84e1aaaa9e9578f15f6531b76d45d9675fead4d23. 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/USWL12402192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467851851d04af26b949cab740b18ae09d82164cc0f3307b82f5d553ac38f5b4. 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/COAF42392961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaa78808b758aad28f5d522f90e561f4cab1a9d5848f5ebb3398677ca6c926d8. 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/COAF42390521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1423e75063da90a9a7617a5f55cfd7680396ec056da7cf5ee9a0ca3ca6676e8f. 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/COAF42292395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05db05eedfe66f99e4b112391724756af891fb8ef177b6067a93fc28ac6aad7c. 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/COAF42493535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc97e331a3f136aebfb31cb25dcd19521d9fb605ff1a43494529bfe062360522. 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/QZNJV2439955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x317f5cfbe42fcc5381f97420f464cb382c54af9f92081b3a5bb20025547d4263. 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/QZYFZ2406903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0875dc8389fde2617367a8953d0f5eb72b714184ae6e5f3f11112837a1e3f163. 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/QZZ3N2400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f3e8082f94b4ebbc23b22f3842e15f388e897e2f180ba9f2b2d1bcd4143d474. 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/QZZ662373256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6378681c78627cc872428bc967f9df94f25f8c8ab5b637e2e68991bef8c0431. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/CO2522301024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0078a6382390a5a52658e6b2725840861cdf41eb56af5a51da213eb3cb8a3a6. 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/CO2522301020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d030cd79de0caada3d26423107e96eb015a723fc48cf3785f13330b87ba17f. 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/ES75E2301787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57aee0b799308f09c09968abe8d3314ee5d0f85797592cbbb18e80cfad186377. 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/COAF42391004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x319dd27f71893fc6b2167a3f26d23e58c9e7700c137a10d4192276335742adff. 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/COAF42290126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbc32d91d18ad5873021634e8e47be31e961ec53b560237422a31986a1dbe2c. 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/COAKK2200014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0bd8d73aa7aa72ccb7e8c2a9a22eeb6b4d8cf03370babc1d28ab886d413b911. 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/ESA011542841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b40757a3d66e080d384bf93652d62e70907d9f2ca0f5db881aca694fffbe885. 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/QZN882411425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd268762a095585e2b03afe9c8c826ef723aaeb5a0265f50fb7189eafd46f8ac9. 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/COSO12500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc33a7acea4e8578e606d5141d5b3730c6005d4f5e0ae6339480226b179b66e32. 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/COSO12400234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x955288f981e8577124e34c8a76f96f550b628d2408df7643e5fbb7b3ccafce89. 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/QZZ8B2498317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf3db6f7b168baf828223ac3e54a740487dbf4ba86feccc57713319f3c8e5db1. 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/BK4DA2456731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdc1151d3fa32ac02951ae1635b8ce2ea7a793a55f87da223d040b1865ee410. 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/MXF152401637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6378681c78627cc872428bc967f9df94f25f8c8ab5b637e2e68991bef8c0431. 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/CO2522301024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb84002cd2041d38d4b0680fc0945ca18287fcf2d34c953961bee8d07e908bf. 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/QMDA62346545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fa9b154fc8aee65c265a4ea7ea331a015b12f11797e98f72963a686fb73729. 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/USUYG1399719.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f0a3cd3a5b2a235223f45810ff94d5a5e1800e6353bf87543d764a0a733185. 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/DGA062015729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bdd27222c6365f23eb929b8d126224fdf0abcc1595d43ea500806a99d4b0f3a. 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/FR96X2087072.