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 0xdd2df3372908818168d37d031c6a12e1c428fec5bdd00761af8fc3c4653fa26e. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e7d2029a-1934-4196-a2a5-4a51f015b51c.json and https://artists.proofprofile.net/proofs/artist/e7d2029a-1934-4196-a2a5-4a51f015b51c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Alfredito el Romantico y los Indomables del Folklore
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 0x96351c5f6def87a9366f7e50e4dd98b057895f49ceaa44dd37973195caea41fa. 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/QZHZ62248231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fce931379a428e227120f2a9be5599832b2616b1f6f44d68cd1f7b69a08d00d. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZHZ62248234.
Engañado en el Amor - Chingasino Orgulloso
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982543284722ec405bb39d6a5b35842068e2a17da1094fc98cf1942e90a4ee88. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ62248233.
Agua del Rio Puchca - Me Encuentro en las Cantinas
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e295cfdedb473d30cf82c8e8cef601e2dea18ad03195afd7ddcb007e14d7e4a. 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/QZHZ62248232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0476048602ac45722715421c986b9df901271b277ffe7e016a81ab5d2d4ff7d8. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZHZ62248235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f8d242525fd792363b00612c65bb065b5cd8ba886a99df7c0cb745be569cf6. 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/QZHZ62248236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e646fab792a933228d4228472f8059443114e58d7f1332b1a2efc40a73c17b. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ62248237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23b8a91ef2bcadc39690018ba01746d82a324b7a29ae4c54af603e0d94fa598c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZHZ62248238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe21428d5a2179ba989f1fbf2615c512bae11d45106d170515a1245997009be50. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHZ62248239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d9c045c506131000ab60f365cb661a39d08d120d15ee48d945a0aff8f91856. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZHZ62248709.
Alfredito el Romántico y los Indomables del Folklore, Vol. 10
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d84ccf42a534822423a4f7d68d00f13a324984b9e22878741fb28b1f5ca4167. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZHZ62248496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c753de0e7b8106b16869be65a99af8b389bc2e3df720161b0ebfc1dde69336a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:30Z), 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/QZHZ62248498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5cd01c398f5a0be2b44cf1b329809198d0b4f9dc2969203d32ce2d7f281561f. 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/QZHZ62248503.
Alfredito el Romántico y los Indomables del Folklore, Vol. 6
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ab5ebee2c26cdf57b166a47b3b4f6dbaefc1c58d29e9d86f85a265f4ebecad. 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/QZHZ62248633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb550fd7e8b16b97f538dacadb499dc5d59f13a0bfd1c2b05883dbb51d781c980. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZHZ62248636.
Alfredito el Romántico y los Indomables del Folklore, Vol. 7
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de206f48a190ddcb26f36609bab2e9421e7d8901b4d15cd209ffc133de9f217. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZNJY2511970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69b65b25b594a0948746ccd9de0f30d5a84c37f0e75873de1887a437fbc0f482. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZNJY2511972.