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 0xb739d92d2574763cef74287a7e369d317bafc33e5f0ea14941d4052d09c30587. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ca475bff-61ac-4293-b38e-032f974e02f0.json and https://artists.proofprofile.net/proofs/artist/ca475bff-61ac-4293-b38e-032f974e02f0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
No Mundo dos Sons - Hermeto Pascoal & Grupo
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 0x684cb1ec6030e088545f324bba16e8dd207a6c010f9bed91b3c8236dcc11da4e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BXSVC1700294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe35c726731989b7f07e21d8be4848a7cd57008e4d99e74220239d87dcfc1fd6a. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BXSVC1700293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6915607a8cf014801360f2453d9fca164c8d39fe141b983ef1ded7498676fd64. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRHRP2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9131436984837c0126fd22127d347c070525a4896e020e973fab74e922a42849. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRHRP2100015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6e787cee3368a522360457cbb1de6c276ba80162959bcaa5b191052aa42508. 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/BRHRP2100017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ecc3c82d41c8a6412536a4e9e03a1fb402a9b198f1fa6f896cee0a769b23fb2. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRHRP2100020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa45d1594540fc5bcd07adb28d1970695210a63b56328f8b21ff095898e247859. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BRHRP2100023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3783bd3e84814ffeaf35f6cedd4eadde238cef33f1f8f6ba4c60d01d5782edd. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BRHRP2100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc4669411d0c42d67528d8381a97afef75980e7d9a25f7a145702448caf7112. 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/BXPNP2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7715ad822b38113cec23478c0d76df3a26cf8b89acf1ae91cbf47d678e0c3563. 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/BXPNP2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8363d3bbdf88b9e31c29a0a69b3c4a09daf3c775f65bb3188fb7c4962cc2f42f. Chain 2 (Bitcoin): anchored in block 960170 (2026-07-29T23:52:38Z), 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/BXSVC1700291.
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 0x3a945dc93030690a43293332211f3d05b16bbd4aea587263fdef1ebbf2f78f9e. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BXSVC1700296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea55026805127839bb94f44fa1171bfd829b883e8f2a7ca1400e0fe060b0e95. Chain 2 (Bitcoin): anchored in block 960309 (2026-07-30T20:35:49Z), 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/BXSVC1700297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb28d8648fa3465474e3fe0cad12b7e374042295ce8045933787dfe0edd3467. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/BXSVC1700290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe86679c09640c5a68e16fbd4c72fbd58520612a6ce51d832e5e679042b46ee6. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRHRP2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda865d25a2201c406878962de9a3f60c95b48b262852b20d8eb592e7a2607f1b. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/BRHRP2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7617466b7f7de72395ff8c418cb7108c915999659fdf6f8cdabb7284e2644ad. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/BRHRP2100018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf938c7ace8171a210e32d0be56182be86b91d5b15b6286d3891bff4fdac878a. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRHRP2100019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716e70a89c7f87dbbb02ed6b1e30bef4b0ab5af91bf9aeace39187f8045650b2. 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/BRHRP2100021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb074bcfa570a299df72df18655df16357560d5749991d331362614ad710c231c. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/BRHRP2100022.