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 0x464f72600e964e7af941ae6bc14380151aef7c73888502951b1f92bbcff2c81c. 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/2e71dd30-1d68-464a-95b8-db52a9a1a2e6.json and https://artists.proofprofile.net/proofs/artist/2e71dd30-1d68-464a-95b8-db52a9a1a2e6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
El Portal de Mis Recuerdos (Marimba Instrumental)
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 0x22b46e85ba9bd49c028ced2561dd48748896fe10de9bb3bfa94374c323416ee7. 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/GBSMU7541212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf56ac464290286e318a6edb4d62040bcd1f8d1c04e778457d6c7c7d65b3de56. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBSMU7541215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24180005eb10c4a433f0211e52d2482e780b36eceaeaa0ab8493481b39812e2f. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBSMU7541217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe729f0bdfad6a43460ac658cd8065dfe11345223f19da66453794384ea6586d9. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBSMU7541218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df923eaaf4b05e4ec7d47271e5e8090fe5010c27d8fa926ce3ae56d107cf514. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBSMU8140938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9627b7650a4c10792f711d7e23366cc3023ec67a9a6e57dae6db752b24e2e387. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZK6F2087907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1392889e0ed697062bbfe259303231ac6c55b9d535c8b5b9d3c7fac1d2b089c. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZK6F2087914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x856e32465a8f55810943df630fe2d500f81c012311bcaa8ba26579f1ab95a156. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T21:08:39Z), 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/QZK6F2087915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7186c43c8bc5474de931b0a5d3b2956e66258822f03d0268939ce91f1a286ca. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZK6F2087917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ee863c200d8c7a7b2e0259052128d7ed3ecbe9c58b6d4cec2998dea17cdf4a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZK6F2087918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc036c8591972331bcbb5b9983e60d7f50b323793efbd87663ab241222284535. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZDA62461201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594d2caf8794a8c67ba29b729823549c676c66fcb0094ad4016ccf8da7b0a083. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZDA72456868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60fad7d00c9577feffa01a0265eea1f1253e66257ee30c834f0227c5e36ecf00. 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/QZDA72456869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967d943a9e4c49436d1141cda04570242c1ad818bcd03b477e8436b6cf27ff92. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA72456871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad65bf383086cfeeff76410aebb8004d661b884ab016f6e838a48938132086a. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZDA72456872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x210721136b4810f5910e9db6ec8c97be745d20b6e15a5fb68e4c17b5c0e87a97. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZDA72456873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7af0a1ff7a83bd1ebfdbfd669b3a930afd248569bc7448c1c36199e5e288848d. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QZDA72456874.