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 0xe5e6b26da90e0dba7ca8a87c142869547551b846a05f73830a708838f96379cd. 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/90bc8667-f864-4c8d-98ab-1d0854c5ae34.json and https://artists.proofprofile.net/proofs/artist/90bc8667-f864-4c8d-98ab-1d0854c5ae34.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 0x3d24c0dd9a6208366cc14a28f71af265e8caeadccc12342c6651edbcfbbce127. 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/QZ9QQ2300240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b7c3603ed817cf0d5749c9629fb51b820de0b3df178e670923c9a2d598134e. 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/QZ9QQ2300241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65851e1196cf1ec6d5e107417bcb0ecf2d44d71facb0e583aceeeb5c8b9287d0. 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/QZ9QQ2300242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8846bd390c7d231750dedb3897e5416a9be7841d97fee7a3c23ae2074f79ebb. 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/QZ9QQ2300243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f260f924b7129366e8854bf4cc85746006bd4d2741d1c909d227c80eff75725. 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/QZ9QQ2300244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1064f71a99fc6cb5c9862d68fd973db245b1218bd5a8283709d837806bb3b3b8. 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/QZ9QQ2300245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4b6070b854069ce69f0ac8eef2ae1fc0c67beef95b230b4a000d9775bf6cf4d. 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/QZ9QQ2300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1cc886ae9b456d2e6e01bf382146b858d7bbeba5c5db4778c849e839cf4b843. 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/QZ9QQ2300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9bb4d5409c03386f9be5dab40997ba60b5daec70b40756300d1b4153e0c58a. 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/QZ9QQ2300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x540b5287d3cf3036cbbc2f69225e9b7e8bd8dd1e6eaf384618fe809347e732f9. 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/USDXS2100562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2497731b6dcb63d49c0de8c902c8471aad61fcf5879159e6523f9cd56ecafa55. 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/QZ9QQ2300150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f53ac7e71afdb7b976be18928b5c312bc86bd65e0399c9526fddb76cae81e2. 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/USDXS2201604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2aa16f4d9272679854d8ea06209c890ca7c3e5037589a35b4a0f5a90d82e82c5. 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/USDXS2201605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbb9bbe12367044175f84e82fb7159ded5f1d214c682550395b90bb3fbd38ca. 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/USDXS2201606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabf1c134f52260e68ff6a34559c305d0ab2309f25c8a7e61b4c5b5ba6960f18. 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/USDXS2201607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf878125f7fe676b45d725fe6f6a3782904a03767c15d35c26d8f8d40b7bc4b. 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/USDXS2201608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc72a04b303242289ddc2b699e9e84e5ed36252bd4af144c608e9c8b9afe1ad. 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/USDXS2201609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4de90d90e818f4451759399e720c912684944f7fc9084576eed2d407d93f54. 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/USDXS2201610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d5e4951a26eda79eead060b2ed54f89c0de44c8d5ce69462d5f694be4b36825. 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/USUM72317020.
Ya Regresamos Al Ruedo (Fernando Meza) - En Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611bc19247feaea8036eb9e45abed2f9c27913dfc91c3d3317a2c74459b5669f. 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/USUM72317021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea698cb3fac0c0a3b8e290c5723ec45b1b159545cc99a65845ac355d953279dc. 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/QZ9QQ2300804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9371a0531e64876b70c2348ce0ccff525f59fcf1c30307e95ba9e226264d7b77. 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/QZ9QQ2300707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb96fb1eb3b95d52afc7385dadd1f51bbb6bdb36974604677ee091efdb3001d60. 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/QZ9QQ2300215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc2d0a77d7ae3f56cfaffa7113a08463d2af5fd7f2b3ac16bc7bd7748ec222c. 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/QZ9QQ2300157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d9017cab4463a4cd9fbba2c2834166099e23910ec4742f438f1fb9ff2d27412. 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/QZ9QQ2300081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1176965281b3a28a528f9790ce3170958e3ac32a7275813810eaff8ff9cc7d0. 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/QZ9QQ2200187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe18ddee8484e9c86d8d354c4239d9299913d935f6595a8eadc2d874b649ed83b. 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/QZDQH2148655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe069f80d6951fd688d49323bd14b7bbeee30f72655ba0ba4ad2e69d7cdc342. 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/QZDQH2148656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x670487a29f8ca9c3138d6ca0ffcfd60d603c372eab165df61f0d211e1c2940b2. 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/USDXS2007328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32a86c872873053cde2d7d374f592ab45635615749f830b521e437d08014777. 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/USDXS2007366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x148fa536381a5ac059142270e794fe269be19ae4a339045675d18d619032bddb. 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/QZ9QQ2200177.