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 0xc839555658da8f5283e6ecf827bf777953827e7d786efd99cc006b303295f56c. 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/94ae279b-ec65-48c1-bca9-a4cb31a593ed.json and https://artists.proofprofile.net/proofs/artist/94ae279b-ec65-48c1-bca9-a4cb31a593ed.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 0x740f1cf1a565732fbb24aa2ba94a36d76eff2dabfa7251de11d30e65357340ae. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/INT281200363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98749a3c1412055f90f78e5d31f50d3215d8795b17ec99844b4d1125df11a545. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX871589263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf8cefad299ff611ddef35cf7e6f9cbb2a7f725723dbefe3f9c1953e8c36202. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T07:55:55Z), 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/FR2X41595263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde8cad8b86983e7a6e09040782b7c2aea541ea5f9920951d175b93e2105be968. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/FR96X1678796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776d63e431a740106b9d6971123fdf4c8c21eaa11131b5f18c46320ece904c2b. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FR96X1919636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7311e844fd148f22b76cf7c66f9184720d2eb6d00e01abd4bdf227066044a1. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:58:05Z), 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/INU251900617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7311e844fd148f22b76cf7c66f9184720d2eb6d00e01abd4bdf227066044a1. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/INU251900617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe529ce32ec0557c55e3401fe60331bacac05ea33004d4302f16d421067917e24. 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/INM432100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338fb5cdd6aab5f80ba515c2ce262f4d594a1fe87ae65280206049363aba73e8. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/INM432100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41092d156c5e99ad48bcd45233ba10615213d4981a144f8851b5c86ff45a4087. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/INM432100152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf16af3ae0c558c008376b54591ca16b032cada9dc2d0aa2294510a79182f06. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/INM432100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b1b6065d1675ddb372aea5fcdb579f72b17ff8bbda6fcfc06ae7ee01c356a7. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/INM432100114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe529ce32ec0557c55e3401fe60331bacac05ea33004d4302f16d421067917e24. 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/INM432100143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338fb5cdd6aab5f80ba515c2ce262f4d594a1fe87ae65280206049363aba73e8. 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/INM432100151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf16af3ae0c558c008376b54591ca16b032cada9dc2d0aa2294510a79182f06. 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/INM432100154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24c0a952a86ec67375f67d8a275a01538c78f96f2bb63294980a275cfe0c6ee. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:59Z), 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/UKJ8H2207886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x314a6028f1c0a271100310ae687d1430424892837d236551d0484a6854cb18b9. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:15:18Z), 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/FR59R2354699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a683e0dec00dc53fb2e2a8117f3267da19f3a927cb89e0dfdfae9d4f875d6b. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:51:14Z), 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/FRX202341078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x011a0219a9d61b4575ad6cbf4d35260bc19973200d23e03bb2fb8c1708d0a2fa. 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/DGA052404605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3904dbafe419d5c0796e48d3838505d024c83bdbb2c7b3df8d3d7ecbfcbde4b3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DGA052404606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb633dc600726f8de94c90eff0421a3b372c6a15fbaabad80e1517dbcd8a7f4eb. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/DGA052404607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69550c26d9fb85154f9fc02b79b708cc15918b11b4431fc08779cdd91e906dd8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GXHUT2586402.