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 0x09e7774bf6a42ae078f4ba9e71bfe8f10761a953a7100f24587c6c2c1edff569. 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/d725ce56-226f-4c04-b1cc-5140d292eae7.json and https://artists.proofprofile.net/proofs/artist/d725ce56-226f-4c04-b1cc-5140d292eae7.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 0xcdbe18640a9f04da64f47a4b1944b514ccef59aab37708f2a3e9e2765b59576b. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:28:45Z), 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/CAF661700426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb10f2432d177c37e1e8e801f8a906b60f6c90c6a50270615f28669e52659c5b3. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/CAF661700427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x215b5732ecbe7e6bfd5ecefb0eb6c87461b34b3b8489bbdb201cbcf30ce841a3. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/CAF661900943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2f62d75c5568a35998246bbfa1bf32d1ba45b223d010ea2f5d3c34e37e8103. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/CAF661900944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01c01c844ead5af090d22c01536fa52c4fbce5e81727d3ccac3e04f94568fede. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/CAF661900948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fb2059d667aba5f81715491192e97c60942dc045d23d0b9dfbb1fd01fd75f0. 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/CAF661900949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a015185ca2e6284d630cd8e245184f7459cb943d43273aa9df452d5c6b6283. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/CAF662100135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61559e149e53cc201f971c23544a8f0f80dbc327c5d9a300ff90471f20e5e3bf. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:22:15Z), 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/CAF662100220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4244524506c83241ff9293c68c2f3d92b48d567c9327d7dfa81d967fb63064a4. 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/CAF662100349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4244524506c83241ff9293c68c2f3d92b48d567c9327d7dfa81d967fb63064a4. 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/CAF662100349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe69454b2584719b2c5c0d66422097c39685baac21ae2f076f577c668c0b5ca12. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/CAF662100363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0905f9f886c50c9fa57eb3e0f1db64370823a5a4c2823157118f0d05cd34c6. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/CAF662301142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0395d933d50c672a325febdfcc6dc6f20d92e2f205ab544163c97bf7dbd775a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/CAF662301141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f67c711ede59de7d1fcfa0fc5ceaae6151f39959841e49556c71454d4f6c57. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:09:59Z), 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/CAF662301140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ae7aa831c2b67b87cbc8d13c63daf6af0a5c07a36620fd8aa7b10271487dba. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T07:56:21Z), 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/CAF662301144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ee9dbbaa199465703b387fda90288396227c42e6fd1263f31c658d8e6f85ea6. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:18:51Z), 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/CAF662301145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219f50204921a1d6069eadce337fc6f40377b4dfc949ead6d28a1fcd4d3fea5d. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:38:11Z), 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/CAF662301146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be29e8a156c00f6afcdaec7080a7952f47195fd37abdc43db877b0f4afab655. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:04:02Z), 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/CAF662301143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86aecf64139370084fac5b68dde31104847e734af4a0864cc1e935c6ba5f74b7. 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/CAF662301147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4dcf6d2e579b34b2b1793818cfbb4a78980949b175f532909de9ee0747db9ad. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:04:47Z), 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/CAF662301149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb866c1850610a0249e852a63a5b74e091d8923164bcf0472ab599fda3defad75. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/CAF662301150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22e8d3a7ffc205737c12eaede8a606370b40dd0282cfb24c6603b8e8f05ab8cb. 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/CAC0C2100667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3db10b0d644f98158e9e17a8fd223dd593e0111ed59935da3d62afc4f1ae5743. 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/CAE861810011.