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 0xe23e5fae53ababe27c49f2cdc8e3322f75eccc24823f9738bd5595b3a01515bc. 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/fb3d026c-b767-454d-883a-7a07b1cffe86.json and https://artists.proofprofile.net/proofs/artist/fb3d026c-b767-454d-883a-7a07b1cffe86.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 0xd39bf2a9b28bdbac7bb5aa628b0334964c1d0bf3bccbd3904140743ad9b00699. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/AR5UH2300777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835516154081894e4a5db6808400d8b4075b33a20794fc7fae018e6263955b08. 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/ARQIH2301363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4373f00b21d6eee9426e4c5508551c86b6a5b1032aac9236ee19deb506259a5d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARQIH2301364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8e317668534110ab9e02a1fc731ef4ff3dce9cd5869c46d81c711db8dbf51a4. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/ARQIH2301365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b3a7cdcc2a217c12aba578d278565c4549e898d52ef9c10c4d912831c92761. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARQIH2301366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09c7dbb8bf1c7bd184f7c6a5a752416471bae506aa85fddfb4473a90f04965d3. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/ARQIH2301367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6def7f69fab4384914c534e345b85f2c6a419f5faf5afaa17e14cecb87e0aa0e. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/ARQIH2301369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad1024b0dfd28624b5b80a118c26fb42f8c5a44d5ad3bd623330020f15152539. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/ARQIH2301372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a12bd4d8ff5c50527cb3c9d60d540dfceccdd58e867f92393224cd837ad016. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/AR5UH2302481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6df522e7813a68d1657402a7ccc01c9cfa7d37edcd058215294f5e59aab5192. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/AR5UH2400114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f83382a61f91709ac6a492ba6aabe7f10af37621045122e6305440b8c9286a1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/AR5UH2400209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7c8bc47bbf458af1b0573caa4145e676cb903ab76d360c14fb0b0822237141. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T09:04:56Z), 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/AR5UH2401147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ae7d612cfab8fee0b10ff5e56d62fd38f724790b941b5e94e8fcccbce0d3e5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/AR5UH2402126.
Fiestas Patrias Mix: Grupo Sabor a Campo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d968a1efc45324051e5b10321a29145a7f29c451982cc94b14564e01ee574ad. 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/AR5UH2400680.