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 0x53f59c394a0acbb67f33a6a9b943961c4c0d92aaea1cc02ca4bc4ba3eaf77385. 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/6adc99ea-e5ed-436a-bb1d-4ae1294943fb.json and https://artists.proofprofile.net/proofs/artist/6adc99ea-e5ed-436a-bb1d-4ae1294943fb.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 0x4590c020c265c32534087f6d6ee502b2d7bf20897ce0fc427d80f6f8b1e2b555. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:09:51Z), 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/JPJ902012960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a607017859ad6090ccf468df3c511e930f1c3b273937b35ad67d0fc804818f. 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/JPJ902012980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8416a109b4251b545a809a3aef28017b594e4d6fd8fb2a19e1d73a3094347b85. 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/JPJ902012990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee92f9a7cb6979aa75d4790743df4e8700b4251ab65b18a67eac180661405879. 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/TCJPS2216913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee92f9a7cb6979aa75d4790743df4e8700b4251ab65b18a67eac180661405879. 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/TCJPS2216913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea4f4b0a3bf15a9016b7d991bfc79e4f840928c5596c5fd1cc6b9675413474e. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/TCJPS2280867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d47a10b95fd3549cee9576ad49fee7ebb240c48799801b35aae757af9764b5c. 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/TCJPT2220644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d47a10b95fd3549cee9576ad49fee7ebb240c48799801b35aae757af9764b5c. 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/TCJPT2220644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7398768f37038783bff5214c173abb123db8bfac2522a25a3364be5f4945298. 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/TCJPW2344601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655df598b8809bdc7d780aca457f22a6af4e67136b98f6b5e23857c07afc7671. 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/TCJPW2344617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4d01b114ed47f09e38ffe8a2f1cc47ec430a930817686baa330804d5838b33. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPW2376439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac551740abd669fc93f3f026f15c6947ea9548caaec77890003dfdc66cce884. 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/TCJPC2404756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414ee22ec7c486856349af7b5f3a97c0d2ce58bd072dc041f79561a679f7dcfe. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:17:27Z), 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/TCJPC2421010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa4cf7f342722fc6d31f8fcb0c075edcea6289042109aec303707e97145e8d6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/TCJPA2431908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x383a04e900b9865aa9620302d82ef3b91aa2ab1a60edf830bf2120e859fa7979. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCJPC2404764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc528e781213adc3f7bc83520a25d0b0b26498b0938bf078dfe211b2fb770c116. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T12:00:32Z), 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/TCJPC2404767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcedf08948e80c6fff77077b1721bca192f788b46e7ae1339063d0c9eb527eb. 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/TCJPC2404763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9e8189bc43b9d595db9689f40905788e8d63e86d3d1d214f8491519427a3566. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:57:52Z), 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/TCJPC2499806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8078b782b87258e2a1d68e422c116c163af9f382954181ad52468aaa3cb85b68. 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/JP92N2372111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4544e2f908596e62e121bee3f744011729558ff1d47da36b0d791c18817eeb33. 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/JPP302101982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd5327dabe0fa8f49670359c4e2bfd945a9ba75d3f7bdfdd869c13ab0969705. 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/TCJPP2139534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4544e2f908596e62e121bee3f744011729558ff1d47da36b0d791c18817eeb33. 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/JPP302101982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f6c7b56a61172d64a8ab0d0265b8341cbcbc076d81b17e42d9b69c11a07f95. 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/JP92N2441186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8685d3756b7b78cdf0945ba3baec8c95655d13a20266725af90c9bbd8e49d7. 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/TCJPY2300684.