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 0x14f8d6f1aa97e64870ee828f9cae8e744151e1a14334967a3a3fd71ceda4d781. Chain 2 (Bitcoin): anchored in block 953924 (2026-06-16T09:52:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1b94f7eb-fd6e-41b0-aaf2-7a73f9954232.json and https://artists.proofprofile.net/proofs/artist/1b94f7eb-fd6e-41b0-aaf2-7a73f9954232.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 0x6158c7ef366c44a48073998382d8139a7c873af1f5b160e594e00a6e674c9825. 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/QZNJX2399473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc528e111ae0e609c50a6b67b65955fd617ddaf4ddf382ffcac128238e990f2c. 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/QZNJX2399474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee4602cf6e36e0624952c6cf509e811e749acf754fa39a6d260989535796635. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/QZNJX2399475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb339bfb2757b6f1549aba0766fab3b55d35556bdad120f4bd09575ac959ad5c0. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/MX2832316676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c96ead8bc120bbabb4308fb815d9112e62bc2af038dd0072b823b232b06cbe7. 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/QZNJX2399476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fab5aaa9fc24889d3c490bafdab3358f6fdafd6c519b31b9a89e1627e7d1387. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/QZNJX2399478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a726aa60862e9b44a506e8b8e354001b34b0079643b1e6c8d7991e945790f6. 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/QZNJX2399479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa73cdbdcf0b1ab6123686d890124d75eef5e79b2b9122a91e5721d7fc3ebc6. 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/QZNJX2399480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a6efdb37bf2424d07c53bfcbb88758fe556e3b9bd27400b755c89065f14e5e. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZNJX2399481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92eddb4f1f6a9fbf124d6f4da92c348944a03b4e21d459d8fd2ee02101e0ee9b. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/QZNJX2399482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebbec6b62704a4bf7d0376a2e22e16c9b5ff45b188e78f597f29cbb59228490. 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/QZNJX2399483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e1ece2a9c65211d9cb4a34e2338e4220a34c4e3db2cfe68c4027ab473b720e. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/SE6QE2481421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46bd9a8ef52a0d8f7268a923d1e72f156a92ab334d503cdb708611a0c2bd02d7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZ5AB2419308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ab880d313fec79fa7cc3894d2f1bf6b45e1ee0fadc74ac2668ab7e1c3fa7ac. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/US7VG2448706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c8fbaf9b53d81d9bd1c7fb0bdf2db2a9c4445df7eb5d9f8ec4e60c5a0ac7773. 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/QZW9M2213383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f2dbd1b6ae3b2d686f4c9ab895bf0edc51f1203e04ed90728a8347580025fe. 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/QZW9M2213384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe359918e4e52cc1cc3c8b12522c93a3a98615e159adc06375aa99479ff4fcd3e. 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/QZTPX2204682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9345484b5fcab44e5600b5064de55d5697f50088842c19f85cf0e8abc9bec8e9. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/SE6I32423757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78659a546f345b9ec4440f93b171434e96ff35290672d98300cc722feeb325a. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/SE6I32423758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5351ca4622f5fa8527394d766c630432d23fd7e4e1418a8ab981f9ddfce0209b. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/SE6HN2478838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94d4d06c69ab2881274aad8f8355ede9356524f703df60f2ed4642783719dc03. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/SE6I32423760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95660a93403440e2dce965307466343c9ee12f1f68e0651630ea45dccea3e712. 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/QZNWQ2372138.
La Lejania Del Ser, Donde La Moral Ni Existe...
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5915e47097c828425f9c7403f22d56d4495ae9eb7085dbc39804aed727630f. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/SE5752447287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f6a04ede7e26c3ee273e205a4ac7dff3d0fea714711bea00fe6abbc2906cc9f. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/SE6HN2484598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a211b8999de562fe9d613c2e48b7ffc9a54b3e56dc30a0a962637abb9f883ff. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/SE6HN2484599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x270be4a93708fc189b62219f6c375505c25f9d7de75919f8fc20e791e4dfabe2. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/SE5752486119.