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 0x22c40e632230567127976935b458ca989c4318ed5a781e4179574080510bc194. Chain 2 (Bitcoin): anchored in block 954623 (2026-06-20T23:40:06Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cc513fe9-5b34-4f74-900f-7c696bc0bcb8.json and https://artists.proofprofile.net/proofs/artist/cc513fe9-5b34-4f74-900f-7c696bc0bcb8.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Luar - Acústico Circular 20 Años (En Vivo)
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 0x995fea3017765d51bad436ff59a2a1da991dd3289a311349c60a349ae1a8ce64. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/UKXN22300170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eb9a8b17341e88dc3c8e3cee406500b7aae29551f02b5d3a8303685ac12a53. 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/ARA231700166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f7a0714be8547ffb062509d9d1c138a7b895daff2fec0a8977aac36d0f5aac. 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/ARA231700167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e33061aa124cfea177b3e760a6ea5f9d4c3f17f0f28168d6e675b6fef20e1d. Chain 2 (Bitcoin): anchored in block 960225 (2026-07-30T08:04:30Z), 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/ARA231700168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedcee934343738603169022e653cb8dc5e413c3feb44ceb5e8c5173ab177ece9. 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/ARA231700169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541fae672711b7d6cde5009fd0c50290bab9d285b6a20a827ab9d74198e85e82. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/ARA231700170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe579c72cd71d18d78d9c69b32a231c168a6627a802f5ef875f15cbd50294dd95. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARA231700171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dafad49c8fcdaec8c76d5e72809d68447cb1a11d0ed8c7083b955654e15fc6. 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/ARA231700172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70168c7597855e83a88b2135fc3d0f0a11bdf6f2671f12d31e4aa9f2e9807cb0. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/ARA231700173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2fb84392565d02b4456a3416a6b8f4f81f63717bfe9b1d643f68879b23677e0. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARA231700174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0620c0141ab51b5c2f17ac5116d382459c998ac4f69af71fa25debe7a65a8d. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARA231700179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeab44dd0ecf0f2205bcff6670da93e8e98ba6254743e5aece96879486d116f0. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/UKXN22349863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff13a7e76577fa90d092fca5b6b5e159ac0ffd03c6361d4c509080c7a546769. 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/UKXN22349864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1349829ccc11e53d82f40e2d52f8c18a0adc41b2a2f99b4fc73dac1a5359ecf7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKXN22349865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a41ed5f09f761b92a402661e05e739f3cfd15596263bb2c5dce4d7a07831765. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/UKXN22349866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11a2e62bfb9f4f4ab82017c8de059f3855a67eecfc7933980a2284ec914bf22. 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/UKXN22349867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e80f38aedb8f9c9dd1bfe957d7713a0c05dbc1c99d0ecd0c0268fadca841d7a. 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/UKXN22349873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ff923391fdb64280097118322efc3f3e5881cd10fcd19e55d801fff2809ff5. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKXN22349875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdc0b890a9cc2370a267ee0de621c61fb359d065efce8f718a284b7f80249ee. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/ARG9Z1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd716532a97c5e1f42035acd11ebe7e7f0a187ef34d31eefde059915454caef33. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/ARG9Z1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f803fdb48889536b22006ee2feab42b73a589ecff702075b732bf5ddbfdf364. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/ARG9Z1500003.
Te Quiero, Te Espero - Versión Sinfónica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672e896f0b1b3f5885fecb8cdca535bdf075839bd071e5564707b0fcb481ac50. 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/ARG9Z1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45a349bec5b57ab3432917378e708e4ea0de3c519708ed029740b4ba1499650e. 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/ARG9Z1500005.
Muchacha Ojos de Papel - Versión Sinfónica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9eb6f6a3ebdb02fc3c4b25376e9a168ec99ffbff76f81611b0ca40ea7b10af9. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/ARG9Z1500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf041458d346bb91410ac641ba7cec77ef9ce932fec478bed35ad0eb21c40cbab. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ARG9Z1500007.
¿Dónde Va la Gente Cuando Llueve? - Versión Sinfónica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52b66befeb4f27ccf0a47eca22f59daedbc2d6101bd0bbc423906f9b91b940a. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/ARG9Z1500008.
Del Gemido de un Gorrión - Versión Sinfónica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bc4b8033194216a3c66d40fc79bced1af0b1a8ee320d629888a0426fa3cb3f8. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ARG9Z1500009.
Nunca Te Miró una Vaca de Frente - Versión Sinfónica
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f773fb3f7da6d55fda6e5e5e419d20cfea7fb741c6c3def6fe9950cdb142821. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARG9Z1500012.
Pulso Negro (feat. Kubero Díaz, Miguel Tallarita, Juan del Barrio & Juan Carlos Marras)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47643fa978638b47e4542c7277da3f7eb930bf08af72f1828c4b8d4a4eebea58. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZMEN2100239.
Una Celebración del Rock Argentino Vol. 7 (Varios Artistas & Dedicatorias)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6865a629e0c3c5075a5e31387f7b24430b719a7a6776cb4cf6aa9f868221ca8. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/ARZ022100121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7448a4380a6c333b2d9eb2314f205cd246c32afad1de94f26a5bb2ebaed6d88c. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBMJG2012823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3682e5a4e7a1b3bf76c26d74d613ced37a1f71e9ad822b1651dece4537fe587c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QM4TX1892903.