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 0x4aa0fe970c5736ce017c12569be52c38c6dac59b6fff2db6478cc7b41b0b9cfd. 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/411db490-be15-4d94-b304-125213b497a9.json and https://artists.proofprofile.net/proofs/artist/411db490-be15-4d94-b304-125213b497a9.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 0x10b673d002bf20a71006130409713037889388d4b743ce1e457ce530d536ffca. 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/QZDQH2256919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f940f041a959ce80aed77e2d6253611899c26510744a6648bdaa69755d75bd0. 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/USUM72102796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x349a507d2d7f9c4934005fb47462658573335c345d1a481b1051adbe9b837753. 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/QZDQH2351721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ceb7edbecfeaf56ea9f003981bf16e37feffeca21f52ff66e2442bfbc7411e. 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/QZDQH2268348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3486740857def9ced7927b7e59b5d99dfc2fe5ddd071758def2b40fb2f71095a. 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/QZDQH2266408.
Puras Pa' Tomar Con Tololoche Vol. 2 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7c014d44a13908d38a7fcf0e51baea995c3e4f0a18269e284d9a7bb68d66c2. 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/QM3DF2168275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x482f170f1c6bf3bc7f65a9b0a5347e4652679d4b1889620ab61c48d572da3f1e. 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/QM3DF2174251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeef8ce6f2f5e386df98f9b8559c3e39cb084a2a9fee97dc374ce489995832ea6. 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/QM3DF2174250.
Aqui Seguimos Firmes (La Chapiza) [En Vivo]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0e8b7d996998584bd8bb15750c7656999fab5e69a6cc648f8fc2b401b53a04. 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/QM3DF2174255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23759371bd087783972c9d6c0fcb78eb63a735234fe93ac225dcc949bbb30ad. 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/USANG2186309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f782b81f5e29a291a28a3357de44fd12546c3f18f8f309933baad6fd685690b. 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/USANG2100896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94b6ee0753b248f4b4b2d3cbad853586654e01d7e0e9dff89bc373e41509bfa4. 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/US3DF2124407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce3e2221c60fdf3816cc123272935625a1a2b25d79e1ffddb46f2339e935bae. 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/US3DF2000312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e023c967aa95cee414c0a45ecc408fdec40e1892aab92d40dd9fd5dd2b36a32. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/US3DF1800494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf45e0d7662db13ea41df7a89b272ac2cc1efaea96d047da86a304c553bbd9c8. 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/US3DF1800497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c1b30f47b6efd56a85c3ee472045f2d72ee5ea3a760624dae8b872572eebdd. 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/US3DF1800501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fff49f749b926c5f6deb439301516b9508c21cb9ffff65ec8c6c6cbb5a14ead. 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/USJ3V1448581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbd2deb61a485ac09503f4eccf6d5cd36378e012e66ebe70d556374db98b124c. 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/USJ3V1448583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3f23e2812808f4cb7f5f68e4d2df836a06efa39f1d66343e385b436f74a03c. 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/QZQAY2375011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4ceb7edbecfeaf56ea9f003981bf16e37feffeca21f52ff66e2442bfbc7411e. 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/QZDQH2268348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3486740857def9ced7927b7e59b5d99dfc2fe5ddd071758def2b40fb2f71095a. 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/QZDQH2266408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb7c014d44a13908d38a7fcf0e51baea995c3e4f0a18269e284d9a7bb68d66c2. 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/QM3DF2168275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d18156873ae41453c588232636e7a97ed6ed05dbdca784d3dac242ce5e1fa9a. 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/USUM72120433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa23759371bd087783972c9d6c0fcb78eb63a735234fe93ac225dcc949bbb30ad. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-07T12:58:18Z), 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/USANG2186309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c71e4c46b5ac4f7334f7068e29927f23b956b613dddc97103d326011ae3872. 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/MXF152400179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92aad7bd2e43ffb777453acf585518990ec95e4e87ae024d68e7d75f75bb0745. 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/QZDQH2512051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b6d85942991c9f41d73e0136f60097dd265b1344650f76c423e309b85331d6. 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/QZDQH2504746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bb45c6f9366aaa4adaf3642dd860cbad814c667ab97b53f32db01c7c03ce6f8. 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/QZDQH2439810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bf6435ce88d195e078242e78454a8329393519797cc4762b8ff4fbdce02e9a. 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/MXUM72400708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x651c328d5bd4c4be7d002ed28aba81e243fd938979e77e4ad147ac66108cdd28. 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/QZDQH2394973.