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 0xabcecb74ab337c20cbc1fd5bcf29d3c63781c6bd27891b3a3d2ad2bd507747a8. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8e796f1b-49e0-478b-8bc8-eb3b3e0865d5.json and https://artists.proofprofile.net/proofs/artist/8e796f1b-49e0-478b-8bc8-eb3b3e0865d5.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 0xb6dbf6100cf4c66601ac90309943ae7400d04ff908411e3373813dc5d01b1d35. 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/QMDA62138392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef4871b3d9dfc62e8a6b5878bd4fdb6f8f2ac9e258656c575105bedb37391258. 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/ESA011968115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf0270cd10e14dd4801cf4f5f6c09f061da5e90aa206e90ae32072eb610739ca. 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/ESA011918937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4ca5d89a9f056edf4fc9eea3895d148c39519cb973d2d605fc68fd97501a3d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA011939626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2967f44e7af126f92a4834418c8290bcce17129bfc8fdb3c50754706dc3750b9. 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/ESA011844688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf53c593ff627f10d6ae21c073456d220062cf3886628c45cc1db3a1bcfefee86. 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/ESA011968116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4abb405c3ed3cab55691e99435339d6d9478b23cd30d6df6337d8db1dbecc0c1. 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/ESA031807301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce7eb3a22056f95b9b324263a2684085dec894ce756d4422aad1d9e02c22646. 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/ESA011968117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdff206365f39e2cea1122e0c1e06c1703b06d7ef7bba378ad273cb2005be4941. 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/ESA011968118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28083e177547bb9759cb06702dd08f51e79c669aaa746d0775621c234cff2fcc. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA011953021.
Si Quiere Estar Conmigo (feat. fernandocosta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85315bc320d90ede4f833354d23428c4523e71f2a690b81940de47db578a793a. 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/ESA031808501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9160188d7161683d49f2e358ed6fd5a5552cf2ff2993c0d3a167075788e9ae8d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA011968120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0131c9073ce567b1fd79f03e79c2b7c827ecb446a1ac323c7bdaf777107b17f7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ESA031801701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd78a4fc7887b37c4bb6346b92e852cda23210dc8fb60d582237fa3edbe91d9bf. 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/ESA031803801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ed6f28c34a1959ce4126b1ce110c7bff1f91ada9f70ed8118b4cf77a61d27b. 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/ESA031808401.