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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32465b5204a35d78f320b61fe1c138c5b5e5df1457838f7e9ef83fe26ab66782. 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/49a132fc-f409-44a6-9da4-da67b38eb5c8.json and https://artists.proofprofile.net/proofs/artist/49a132fc-f409-44a6-9da4-da67b38eb5c8.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14675b1795f782822de644ccccee228a9d3907604bd2da6a27775e0b8b33bce4. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USHM81935405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9728f3b46129f0697d393290563215801241e66aa10b86a283a84b6639b6c72b. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/CLUM72000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd836db557a02e5731d09ab1c0407bc50cd5c5cf8a75ab2b971c264491dda89b. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/CLUM72000055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9728f3b46129f0697d393290563215801241e66aa10b86a283a84b6639b6c72b. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/CLUM72000032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bf9d4a9507bdab6e53036bc7ff8f7e30a7a83db565839d7d8bae4b2eec60245. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/CLUM72000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8f6f7ac1a0cb2e67ffce70babec8fe4cedd8aa5fd08609bfc18331715928ca. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/CLUM72000061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ba75c6845a470ec1670149eb94bd3a62c75e1acbe784456d270be71f57dcd73. 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/CLUM72200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1730690fa7a9888a147800011db147e33466b4caee45e9e652287d7a9f4b11. 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/CLUM72200100.
Metalinguistica - Tematica - Cine - Metalinguistica Vs Rodamiento
Minutazos Vol 13 Freestyle Master Series (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20499dc39689dfcdd6034ac9f3645d696e4a826d1e2e85219f5b11d642eb6afb. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ES71G2335390.
Incremental Mode Metalinguistica - Aldahir Vs Metalingüística - Live
Aldahir Vs Metalingüística - FMS CARIBE T1 2023 Jornada 2 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88118c73406dd21054d4a2f36211be06eed784e65b7690232c494a844ca832c4. 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/ES71G2318176.
Sangre 1 Metalingüística - Aldahir Vs Metalingüística - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5db5bffa96d61375d0c9bea4097974c7882255061e53bcacdea1aa9da56cd4. 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/ES71G2318180.
Sangre 2 Metalingüistica - Aldahir Vs Metalingüística - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x562665b48a552d613edd6d9cda5259da21fe18b9c752501d8f52eebdf854d6c1. 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/ES71G2318181.
Deluxe Aldahir Vs Metalingüística - Aldahir Vs Metalingüística - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34c49f53c97cbffcf46d0470661636b6ef9fbf8c0259fc8cd0ac8de2529281d. 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/ES71G2318183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfc9f00902b2248fe88e4eeb628d279252887f6bd2e2394e5856d23db2b9271. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/ARUM72200096.
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 0xebb56e0fb87827a0e88acb8e87093f40fc1efefc2b923b9b577ffce6bb33a1c3. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QMDA72194578.
Minuto De Presentación Metalinguistica - Live
Minutos De Presentación - FMS CHI T3 2021-2022 Jornada 1 (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf890bcbcd36d8c01c1d9f508d796a5ca176cc8e3d509287334442e5d71cc7f6. 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/ES71G2207467.
Tematica - Aldahir Vs Metalingüística - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bc9aaf2dd7469724065bd111453fac2c6e8ceca548e8fc44a434704c72e573. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/ES71G2318179.