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 0x4077a992c9b5a7f7d978d95a138f1a999666417e354c17f5be272ff2e00493b3. 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/f6cef346-5bcb-441d-a8d0-d3ea176a1bf1.json and https://artists.proofprofile.net/proofs/artist/f6cef346-5bcb-441d-a8d0-d3ea176a1bf1.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 0xfc5cb3b522bf48c82ebfc8836eb16abeb97bcfb4fbd4c0180d5d96fdbafbfc2a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/VED040500087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401bef8ffaa6ed3c37c287c5faa188efb2bccf044a075bf38d5a0251ffc38f88. 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/VED040300020.
Concierto en el Lago - Año 2001 (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8260c54f059cee3ee8a9bfbd30c7bd9601019e3cf39503f588481fb75c2a6a. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/VED040300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2148891d490858bb65deb08e8a47b33da6dcf5abf3209e75c4107c88f7231d70. 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/VED040300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb548b8ba6f3f914928895a049575e9de57d7ff18afe508a93c96094160f8be90. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/VED040300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb1a1012f5d194536e34b791eaa007e1dcdb04bcbfc3410442f4295cd353c8ae. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/VED040500081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76c3fed8082f091de88b7e9356c77c859c0dcdecd27232c28be0a52c40ca124. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/VED040500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1911c5aaedc0157391548e04e010696a5deace7d21be02776fd7c168eed2345. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/VED040500092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42554c3d34d227d447f40e1e74d3ee2c6f2db1f3d348f70c69f8053156ede8fd. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QMHUY1350586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x846f9a7e834c8618bceea61beaa6e28af93703f6ce12ca0b430137b12b10910d. 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/ES71G2248008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd036af0ff3508ac45f3728106bcf96ffcf931ae57023804f0c605bd67dec73. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/ES71G2328542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eeaf5fe8cc3bc0a0b0ac0893d653959b17c769529c613ea6d76242d449cd17c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ES71G2420839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8db3829dd76d7c5ca302a11912cb6fc8984447b7cdaaa0888354cbda973c0cb. 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/QMDA72537329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57780c0c378b6f0d344ef5e129e2152625ba527ec83821828cfd9aedff560ebd. 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/QZ7R42052771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57780c0c378b6f0d344ef5e129e2152625ba527ec83821828cfd9aedff560ebd. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ7R42052771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x359eecac876444d913e439d0feaf2bc15f4b3a1b05593c374b5b9b575ea73c4e. 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/VED040500093.