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 0xea3c181f73e72a40725829653063d18623755578fa282f38196a62a7735050fb. 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/c5820bfb-777d-49df-820c-aa9923f49b95.json and https://artists.proofprofile.net/proofs/artist/c5820bfb-777d-49df-820c-aa9923f49b95.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Cayó La Noche (feat. Cruz Cafuné, Abhir Hathi, Bejo, EL IMA) [Remix]
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 0xe36e8b6b4bcdafca7e6622730adb05c76e3fa18df48d5e91d3e1997c5759c13d. 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/ES5152101308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e514b17a603396993258e38b71635b011cceb6f5d88c9615f7632325631db26. 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/ES5022301308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca50111d470ea9826fb084678b28e24dc8ef15fdf824c78cd51b63565d4f0767. 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/ES5022301319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd546d1d204ebce5c0064c2e6c36f38ba6e95af5013d8d73178f0b6cdee859b3c. 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/ES5022301289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef0edd72f08f2ff9bf9ab9e46a29d0db101f9050d1f467785e5dea901103e67. 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/BK4DA2447361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4f66c767c1ba3147e5fd76ddd72125a1a8386bbecb0f46caf9f94baeb837b6. 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/BK4DA2447362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x843e9c2ae7e75e6d669c74d7d1bed79a8bc5b990568fdfb0c0003c9e220ae5c4. 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/BK4DA2427155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28d013e28ea50af71f437a59a62921494c17a411536bc60ebe08c9d94c03e11d. 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/BK4DA2447363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5bdd3a3d1df2e002f1c9c91e32ce58185d1363bc9079efd06afcee000d8a5b. 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/BK4DA2414746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd97c3965930928e2212337817223ad30e8cbd60b1850f10819cbc5d7fcfaf5b7. 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/BK4DA2447364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b6afd7d42c0b4ae6864fa0834c4c731e51d8f984a4eb45bcaa4887859443046. 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/BK4DA2447365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c180743a0a05ae7f6c2f0897569b3f9263fbce0d10e5c29d8bdd2d97107050e. 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/BK4DA2411304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fa5311b63ccb81df71eff6bd04ab2742f5418c62baca3b03868fdd0f3f95df. 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/BK4DA2447366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce483c6d7be95b8b077fd5d7264c1adc113ae03a42dadc3f3760169f78ae139. 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/BK4DA2447367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7741b64237db8c084ddbad56c01dc381845da2e6839f9d99a56e72c7dc8ee9cd. 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/BK4DA2447368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b989d7bd96cf6639a29c1ab12bf49d5cd061fe2b3c3a907bda3650468c40a9. 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/BK4DA2447369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7746d7a32f806dddd8748cc3840cd721f2320174baf53d4937ad0e28d27c4c06. 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/BK4DA2447370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c26804b73e7e44d8203aa03563505506eedafac6da6bcb7a573901824269bd4. 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/BK4DA2447372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb46fb9b5048cd15bc4a3aa3f7c9ab6882d010d660e3824caef401e9c92a6cca. 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/BK4DA2447373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x292c44621540deb7f354ac0f964a5b4f9f550e88abf43c94674b7df1a08006f7. 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/BK4DA2447374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c962589cc9b2646159e548f2d9ba46d0dd510079022d99724cef558dd646a78. 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/BK4DA2447393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a47366e56fad82cc31535ef20856ad418e7bd5a6868bc2fd32455f8dad05fe2. 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/QM4TX2486966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e04255c991b84dea038552984a6f0f604789d69e7d18a6a2cba5e45b6b4c2b. 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/FRX202143459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfbf8a1e949c09a762157e73a349edbcad4f33a519ed96d28ab02f4ab0c562aa. 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/FR96X2115272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f87737965ecec91a3debfd28e1401f423b138a8f216be0b5a39df236ec6cd03. 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/ES34E2100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6f4a71f49be1458fccfd585e1cf7bd06c9965ca40e1a28b3a195d14c6b5251a. 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/ES34E2100012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3970b65baa722cb6d58882596eec437775019caa4a192dd02e7ff86dac032dcb. 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/ES34E2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd22b1f62d769a14664930a4f44cda57f28ed1e35f8158ffb4a4cb4e668349528. 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/ES34E2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ef31978ba0c01571f5cc09a4015e8cb760c967294b649b6ac0b2f049c4dfcb. 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/ES34E2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b53e9b8dd521b7b44ef8ac598d9e621aa4229739a66ac2cb484082922f0902. 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/BK4DA2414728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290840627dd11e5c59a62ea0c438da296ba26589b91926415c9cb5cbe4d5e51a. 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/FRX452331448.