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 0x1b95f4ca0c1804ab475d0c2730af857f4733f15049a0200de6936d802fbd03f5. 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/77815bae-85e9-4550-b255-822a6a6e29ac.json and https://artists.proofprofile.net/proofs/artist/77815bae-85e9-4550-b255-822a6a6e29ac.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 0x6ea36a65cc7e0bf906c04feee522b9931bcabd31134d9b008d3069f6d8d18e39. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/AUBEC2457140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826ee5e88245ae9617e0585d922e513af8078605151406d4581fcb4f34ee9e5f. 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/AUBEC2457136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58fd9766b034a427f4275a4f2714b1b6f1b357fc83d143dba053d7cf818e7c18. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUBEC2457133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefe8cda541cffe6af68e298b9a36ac4b4f48ca3de117471f4975dbc027ebbd2c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/AUBEC2457129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037f33479416ddf22b172f4112adb6940f57d2190186f6e4339813d4d4974255. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUBEC2457145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x268fd83f64aed2f3f686f6b23b01d94ad97680037040bd9547a3ba2ee92e216d. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:51:22Z), 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/AUBEC2457146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6806fe2fff44e83bbc697fe5f517f65eb9063fce26f123c588d7e51fa9bb74a. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:54:39Z), 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/AUBEC2457151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6aed4b8d7696d28882f2d4d25393cf27c2f0b88beee345db77a857555a286740. 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/AUBEC2457132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ffbfc40678b6098c2d2a4cacc2684fa85217d9d4452d8ce9d346ad3bbf2d40. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/AUBEC2457141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdae63201696e73f2b8efb684235275c415402a70af876ef7a7a55e646d04c6c4. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:22:33Z), 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/AUBEC2457138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x665fe7bc49f82e7613caeee6c48794fe42389820b732b82eb43dd8fc1c6be0b8. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/AUBEC2457131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c75a3a01411fc6e6327b81970a223ad3e765adfadec93ac916d63cc4717ee3f. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/AUBEC2457137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc4baf1f85a2f5b3870891f8b576adff5199cadc631f791c9e15a37a771a5e0. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/AUBEC2457142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee7a8a246945af1c553b1aaeac9083e5e4f2a2b0300275e92cfd0e0e1fa57049. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:49:43Z), 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/AUBEC2457135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fe0b556860fcee507c42860160acce712c6bb3c313cade4ab54b170438291e. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:55:50Z), 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/AUBEC2457152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8edba375b76bae58ac1ca8dc755fb16c21111f2197cdbb73a70ef879b8b6cf4d. 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/AUBEC2457148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2501ac4cbbd77bbfad48bbd3f18bc0d0ecbdbd4472640f0a3052abacdb922be. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/AUBEC2457149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7215d791b9b333f8238addbe2201dfa514f2ebd72ee3441ba5cfebbd4d72d7c. 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/AUBEC2457134.