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 0x872d4008d4f3b6bc114b81d67c503727eafb804495b7b8cf144effb4b02d2bf1. 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/1ac5b5d9-5721-47fd-a3a7-01481984772f.json and https://artists.proofprofile.net/proofs/artist/1ac5b5d9-5721-47fd-a3a7-01481984772f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tiene Que Ver Contigo (feat. Pavel Nuñez)
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 0xdf1883eee89c992d8171f0f180af703608cc936608a290d2df0ed16b14085022. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USBMS1500169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dbf44edbbaf28a60173100b4535372a9cfa9d215280c617a8d1f944cd6cdaeb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/USBMS1500171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x433b617e7e873e523ffddd466a039917bf60854665b013ee1cfb158bea168968. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/USBMS1500174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6688089399604eed8a1df8206198adfb6ab15fdfdfff368471406f719e2004. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USBMS1700536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9d1978d01653625af6d670e4684b3a9b33da176d6b5d3efb48dd62ef8303b66. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USBMS1700539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855c5b31874b0968498dbf2da09b4924886082ce12af59a2eb133158263fa948. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USBMS1700540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa05cf97f2bf9fc108eba95a1ff63430d4e85c99a382fe36c2526827e48f57229. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USBMS1700541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcbb430476dae936f9da6b2705ef824e13fd2944be8cfaa1effeb353657a5a0. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/USBMS1700542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e129e30b4ef15c74e43fbd2b5b182b4ed92911a3c91e8936b8814172f96cef. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QM6P42030307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37396150f71ee07345b0c9b7102baf425835820580b4043e67995b0085211dcc. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/QMDA62108524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464b7a39f545d3f44998e586d10f223c793952834ff4ebf3f2a752c24085ff3d. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QMFMF2305408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1974b052166d79cf12db443f3585fa29df78d5fcf34323b2ef3f07a25b69346b. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/QMFMF2305416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dc2dce3406b6a980ebddee3099129a826ee4e45c396fbe1303e41c99bf9de9. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QMFMF2305421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe8807a3d56ef1209bc7fb5ed56537078702f2da8ad96a6979b452e908174112. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QMFMF2305423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23c3c99a9f71dd22e42b44d78115fa947392c19c874017ccc6054042f8b8147. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QMFMF2305427.