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 0x02f69a248fda6501323a8b430de2172689c5cfc8eb8b538eba66225819be2ef8. 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/88102bb1-6f37-43fe-b6a4-624bb7c978ea.json and https://artists.proofprofile.net/proofs/artist/88102bb1-6f37-43fe-b6a4-624bb7c978ea.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 0xbb47d8e44fffc84bd3a2192a08b002dedbfa60ce0d2a036f5e57a1068476680f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US3B90700329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce7e601e27157c87782731e461e7962a1e2d92b6c896407741532bc8c2afe9a. 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/QZHN51993437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd26637a250ff4d64efc1a57449680ef71ab140010c8c2c9bd0557d761cfb8f. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QZFYY1957050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbae2a73ccaeec1da1cb53aa6cbc9a9374842f7e33216365ffcc596508f4ecbb2. 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/TCACA1407104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97b2291fab90904e5d4c79d7a7a821a9959373587111ed3527d8e80dd9639169. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZHN42077556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf14c3afb1f12015c813fb173397c560fcd1cb0b4931b3b3a3279f7fbbccdf66e. 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/TCABZ1425523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3606111c038ef5b272057ed0fdaee84326bb5c2c35ee531a345a9b70b051d6e9. 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/TCABZ1425525.
No Hay Quien Pueda (feat. Karel Y Voltio)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc689ba9dad8d6235bac0859ae068a0fc97eef79efb06a78f346d1747de73790c. 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/TCABZ1425527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebee62a4d67709c69ddba4c16db828dad45a9e22c3bc405ad1b5df023334f97a. 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/TCABZ1425529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d57fad1b771ef3eb78debf5414a2cd19bcd6e963e5ed06651c9498bb0330883. 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/TCABZ1425530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99db351231acd155e77f5241879f15d7ccfeaf9523d95f7c3463d342afd718c7. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/TCABZ1425532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe3f982696c947211514b5dca966709b7ac630297fe9dfd6a8846ec1825d3b2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCABZ1425535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efc44094c1e73135a113e197fed18cc27a78c39d3720224dccc909a05bee267. 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/TCABZ1425537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8bfa2bdbb87c952c602b12cf656eb0b67f14661d05d0c5e3260c818f94c77f9. 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/TCABZ1425538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e3c2389ec47b16322bd0d6918707ad18f3e5a295a0350546b1d201c0e096886. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/TCABZ1425541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3200b3070e99983ada99e3e22e5be9835808536e50e24fe654fdec77ea000f6. 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/TCABZ1425543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75bd054d5ea762b05a92dd93aa18fd8cc72a9801bbf62df13ab35bcaf8efa59c. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/TCABZ1425544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf25f059d721d65ae75f213ed18e20068cee40ddd953b11d6796b025666ca475. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/TCABZ1425545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7698b05913cd09626a92c09befd7a8178a6228c9bf1c1fc011fe9e537ebfc87e. Chain 2 (Bitcoin): anchored in block 960285 (2026-07-30T17:26:40Z), 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/TCABZ1425546.