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 0xb51fdddc6fd301def8d4b8bcedc9bbf1aa5ab0f6140bf9b29d7a9b709b48ea42. 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/95a33685-b907-4371-b217-3f1cfbece5bb.json and https://artists.proofprofile.net/proofs/artist/95a33685-b907-4371-b217-3f1cfbece5bb.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 0x8dc46a7fb455a5136dc09672b5df6eddb1a7176850b8a50cf9ba2ed08cc24e51. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/TCAHO2383620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ea71f4b58c510da7984b21770fd02f094022125c618ded2761ac49437ffda85. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCAHO2383955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1eb6baf85d848c171d5f2ad4ca0b437938be6138961e8443d61fdd4575b1e2b. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAHO2384329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd127853b523a73b774a025d9a5402f71e2871650a53c3cfea834938c5499c1fa. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAHO2384837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20467dfbb8314ba6ed2cc1362ed48123801767238535214027ed620bfa050bd9. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:22:39Z), 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/TCAHO2390333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9889ac9ece511ed351320a0a821f95a0ffd6c01576cba0e9c81db2a7713893a. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:36:28Z), 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/TCAHO2390472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e2a2619f01a9efdbf34ea0443429e7fba62da238da8b1173200a56f6da9b8b. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAHO2390710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd190f67a9e7022b91aa66ae0516347a631a0a1e7467e969f78fa57d784ad77c. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:57:52Z), 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/TCAIA2404357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840da091fb091ab5df130555def7b7f7efcd78e11cd0e6543736fbdf171773a7. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/TCAID2481723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299852914399f8d661b5404d888e8d1ec1062672a9dba6067c0701c6622d3314. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAIK2430548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf459ba816f4ab63741336f24c811bf6ec205fbf7d8805f63b578812b7787a4. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAJC2448382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf459ba816f4ab63741336f24c811bf6ec205fbf7d8805f63b578812b7787a4. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/TCAJC2448382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299852914399f8d661b5404d888e8d1ec1062672a9dba6067c0701c6622d3314. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/TCAIK2430548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840da091fb091ab5df130555def7b7f7efcd78e11cd0e6543736fbdf171773a7. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/TCAID2481723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59c10737f5fa989d98381a14cf4db246c823c2dec19b19f24e1590a500e48c5. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/TCAHU2448085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c791267ac821a6f1fedc1b72144de0a68ac74624e5fb32cd5de614ef12317d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/TCAJG2536336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2498744dcb804eaa3180363c6f11dd16cf84e8ae7b21b133539cfa919e880297. 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/TCAIS2472464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x299852914399f8d661b5404d888e8d1ec1062672a9dba6067c0701c6622d3314. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:48:04Z), 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/TCAIK2430548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd190f67a9e7022b91aa66ae0516347a631a0a1e7467e969f78fa57d784ad77c. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAIA2404357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x840da091fb091ab5df130555def7b7f7efcd78e11cd0e6543736fbdf171773a7. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/TCAID2481723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59c10737f5fa989d98381a14cf4db246c823c2dec19b19f24e1590a500e48c5. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/TCAHU2448085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf55962e0e0d685a6d08e277a7b195962b26758acdc4ee1fbb9eadecc9ddf6142. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/CAENV2554574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73c357db8012a33474ecb12566250167483bfb8e558f31abd6dcf1069cbbc05. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/CALVP2545019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b47c1b30e70c53e71b47d4909dfec8abdb7ebb197e8326af5853412bd173e1f. 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/QT3FB2552997.