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 0x8f11ae717685ff4cd351a0fefe57b59682e83d89b658c61e568e1f2d3aa577f4. 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/bd88f7cf-56a8-4550-a7a1-7a02253aa832.json and https://artists.proofprofile.net/proofs/artist/bd88f7cf-56a8-4550-a7a1-7a02253aa832.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 0x969cf440bce7e3358f0bdf533d07da5d45998128352492b2c1952e241e06e654. 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/QZ9QQ2300500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x267ac61216037aef788f019487d8442ac3c4613f2afcc0b85ad1707346bc85c2. 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/CAN132200145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f29eebb664388bcdbcbed07fceee5c421a4205b628eef3c56ee5ae71e584891. 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/USY282013694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22157b0f398b31ab94b9e892aabca46e1cbb9a9d0a63d190bf89b6e05ba2370a. 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/QM6DC2088917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aad75d4848a1b33d028e68fec1032e47ebd293340dd455e2a5259a9be59264. 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/QM6DC2088920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881b3a1c2fd9b7bbf192b848dd38a0a8abdd0537047b48e9a86e562353577125. 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/QM6DC2088922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0beef1f6184eca15daad77864f6fb16168cf200d124215fced8aae7275dac078. 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/QZHZ41999917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5e273cd901c80aaf8256ec0a6c9719f3c74946228cfc65f70d3145c023db3d. 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/USDY42267746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd530a319b644e953e526796e98b106f00dd8f3740879010be350b394432feb21. 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/USDY42267747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e70fea3945e29541b736b98e0c698c9139c92ff6c15967455eed793ea21096. 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/USDY42267752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97543e35def4b93db89a2ae806ba4d0eb67a2eb2a190d3bac50f5106a05ed2eb. 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/USDY42267957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00478b6f5a971e323338f18d59a1e9ad93b00129e8355583b20b780f4b63c131. 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/USDY42267959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea3bd01b837954e6dc5e66170e0df04f92225760173b89d417e6819e021a3402. 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/USDY42267962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bf408afcf3f1ea18870d86e363822732cbff356b6d7e8fb40a2877f884a9c11. 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/USDY42267964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0b84bb975fde8623ec5d145ca9846f2b04d3afac76fed11e1e20f2d86dfd7d. 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/USDY42267965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5faa8f1f81a634db5442b39ba5d7b4ab2be8ab976a9ba159e90ea97a6f082b99. 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/USDY42267970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa430a7151f0a14139e05de5a4fae3874d7ee4ebd8340ca4c9262e83b17923b0f. 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/TCACJ1526965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a07aacc819eb9ad95dd4493609aeafe66b91d718a5d47c9959ff9c36cf5e12. 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/TCACJ1526966.
Juan Marta / Domingo Corrales / Luis Pulido
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e9946db2cff5866e34405fed8a059ae8a7178ea7f597e1d929d695d19a29d93. 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/TCACJ1526970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71dbc78289dbb8fa7b01777a40691488d1ede3a9efa3de489b35188471e383d4. 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/TCACJ1526981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4faa8e4f92f4cac59f2da9ea18027f09e8e15b9c16d343e97d9402d9b62f07. 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/TCACJ1526993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d975b6ab0711bfaa22149117045fc8ff1009d0e68374acae84fbfab0e11d849. 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/TCACJ1527002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52df2478eb871621307cf7e8a5dab8fc0433efc5f3df71ce3701c3cf37f3e025. 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/USX9P1429750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0663da9a76cf6182b9b465d51eeacfd65d994a6a135f2156eb8aad89941ebd1e. 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/USX9P1429755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f702b8d74620dc05904d67efb5c520c8fcc8d9de54432efbc2aaa7d67206b03. 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/USDY42267734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x608a4df7524baeb21e5aad67baf3e3722bf8e9f3d9e0cf6b2814739da2c23e5f. 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/USDY42267736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85922ceb148f18070edaed83d878007c45212b0f1a1ed27ff2427cbf0334c0eb. 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/USDY42267739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc010eede6d2733d8128b3d663b76322d0fa4037bc20e3ef0cbda4b47d85e4044. 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/USDY42267742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5942e7face3d64ef190de19710d92d84215cf3d192eea69714db9d22fd3223d8. 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/USDY42267745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8778ff938fc5edae613dd18166e58c327397aaaf30ec480877eb32b75c062ef. 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/USHM21342175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb85b87979b00ea9e1fed220fb7478db340072fa75d5840ca09b02395a75b2cdb. 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/USHM21342180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe854204e4c279dcb4eae72a38f6dee222d06b64d56da16e411a9564cf00e25c7. 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/USHM21342181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e1f114b7fe89e6d1757929bb1a31dd0ebca1ee55910b29a71b6a7a273e596c9. 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/USHM21342182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71f0d26222cf9c22735b2b05652e2e4b06e001f1e247e7ab50c15a4da5551acd. 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/USANG2404152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b5af9f721f3bbd3b3ae06c602e1c19c3ef0b68e9859f9fb9e63d1e2230f929. 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/TCAID2434665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22157b0f398b31ab94b9e892aabca46e1cbb9a9d0a63d190bf89b6e05ba2370a. 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/QM6DC2088917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x881b3a1c2fd9b7bbf192b848dd38a0a8abdd0537047b48e9a86e562353577125. 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/QM6DC2088922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa624307eb71bc7c5a5ae2ee782c0c36fa09fb37f1201cefb77c530226dc379d1. 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/QZMZ92504161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4baec8bf39cdb50cf451a7c6c82d366b59c2e8bce4de1443f3164b61c0d68118. 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/USA2P2503279.
Cumbias: La Hierba Se Movía & 40 Grados (En Vivo)