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 0x2d275a9d3958b4b9ae2018bbccd4d9b1d3c949421047c0d5cd28237bd27d14b5. 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/c7d3c2c1-0eb8-41a1-b44b-71d3aaa70f2f.json and https://artists.proofprofile.net/proofs/artist/c7d3c2c1-0eb8-41a1-b44b-71d3aaa70f2f.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 0xcbf0e1c5c5a01bb848db681718a6bb6161b1987b3e0cdb9919e2abac38428dd4. 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/ES71G2325274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x170cad38f6021a904e397a9f55beb3222cf599f34bc9fd5d156493eee6cd1f68. 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/UYB282456894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b189c3bd83f095f5a208b1aca20c5523b44ead46746a5b0d20be012d8a262e. 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/UYB282365001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dab68ae6dba9ff740b5b0e0c53ade4943f5256720c1bbdd99f6d453b04cb634. 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/GBKPL1955226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dab68ae6dba9ff740b5b0e0c53ade4943f5256720c1bbdd99f6d453b04cb634. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKPL1955226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b98b06f3cb3f79a778469c74871c8631cffcaad8e3479cd74929afb9452f25. 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/ESA011705920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0cb1f35b5e55d089d02f1295674151eda66834fe68cc2cd7a7bac13ef78d61. 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/BK4DA2411966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca596246b9809ad0c2d518760f5462d1f28679696295ff7a2d5c0815a49f6d6. 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/MXUM62300546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x465d2e49fe2adf2595677f8ea32e44da64ad22adad7807e273dc2b1530c1ee15. 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/ES5702201221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8c362f41c366ab5cffc2e593c5ff629de8c140c58af4b703375bf62dcf41efe. 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/ES71G1637594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215e4a42f92da2d5c13ffe612203a915728b3e465cf10d6571ed6cd0f2ed9d64. 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/ES6702310002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215e4a42f92da2d5c13ffe612203a915728b3e465cf10d6571ed6cd0f2ed9d64. 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/ES6702310002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76f4b6fbb533b5eb0147de8a95d3fa64d65c1853695073532dfe82d04530fe4. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/CLA352300006.
LA REINA DEL REGGAETON MEXICANO: TOMO I: La chica de las poesías
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246296978b17093c724c0e655e9305a3c99629d5f711e6c1da28e8fdc126eba2. 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/QZFZ62537648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x288048f7c4b16a249742488256ff0de1cc026309e48cdbb6146774cb2979c365. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T16:52:11Z), 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/ES71G1864673.
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 0x11e78b64ac26f1b3d43691d8132218354459680f49a2bf0d2dfcca82c64db89c. 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/QZNJY2102833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bdc68212676cf0772103074ab10e2beaf2dd47e0f9bdb86afd09c6d6e5658c. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/ES71G1707728.