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 0xa1dbe0dee7dda3e2f3e51a0b63e9cf42d89265e87d76dfc41de1ba9681ac816f. Chain 2 (Bitcoin): anchored in block 954008 (2026-06-16T21:31:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/338918a7-df97-45b5-afbc-c39bb5a4e179.json and https://artists.proofprofile.net/proofs/artist/338918a7-df97-45b5-afbc-c39bb5a4e179.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 0xd202ce89af176a4da79aa8aea28dfa5ee6ad41507f977b8e4b7a6a165074f4a6. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/QZHZ41993756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e61c86e5fd7a3a2966fa17d8ba9e6bf1c47ae98ad1ed8a0a8389155fd475de3. 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/QZHZ41993749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d6c18de420253a38b465a4c25407a8a9fbba312b148c3fcbc6bac8c927a2a26. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLM1931686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46866fb4c7d0f53949677030a1b0fea1ca3659cc68131b9725fa69d7f15ccef. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QZGLM1959356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d4811a5167c84535737513cca84d8d20c7cd956f4aff7262a69898085a4826. 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/QZGLM2283605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc46866fb4c7d0f53949677030a1b0fea1ca3659cc68131b9725fa69d7f15ccef. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/QZGLM1959356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x678ec49b164cefd24ebd24c8d81a0f4720fd9b9df392260c32b2ff8516c13bde. 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/US7VG1818349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7d98cef4e580e205161b9e0152dad6e5b2123dfbdbd21eeb1a437db33277ca8. 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/QZGLS2281701.
Pequeña Flor (feat. Impactados X Cristo, Evelyn Vásquez Shalom Pa' Ti & D'fe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ce0d0600de9295c3794b6951350fc92dc7646838eabf2ee99c0bb24fe2832cd. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/QZHZ42258031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79dcf823bdc3ed116a57a5644b9805b27922a94435bcf9437ad5d4d5e4603ced. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QZHZ42258028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589d9dd1ccc049901ce3af5b6805d52acb5885db76b7e937c4932ec8145e40b1. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZHZ42258034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e551acf1ca3fad682138eda46b3b6912b3194544fb10dcd7a5625c59605c5ef. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QZHZ42258035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd70891edb088bf5fa249d4cc8fb58cb05a190d48854a963bf883ac5a4c1c451. 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/QZHZ42258039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7de35786ab85936d3e9989acaf53300576f80ce88a83835640f252ce1faddb4. 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/QZHZ42258036.
Ángeles Cantando Están (Gloria In Excelsis Deo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6dfc95a13b5cb77a802f21685592744e9f678321df04909126fe835447b877a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/QZTVM2102844.