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 0x337352f544e1248a01b538b0cf5bd0e9969cd5d64a4622f27cb914c82495fbcc. 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/b65fe1f4-6c9a-4326-bb2c-b6bb1401f3a7.json and https://artists.proofprofile.net/proofs/artist/b65fe1f4-6c9a-4326-bb2c-b6bb1401f3a7.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 0xc10f0f038f6c57346f4af9386734421bfdb5edcdd1a989da52df6e2b066668d9. 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/FRX201716997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246374019d9bc61cc789a9667d63cdfaf5157479e4d0291f574787fe358d2e08. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:08:55Z), 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/FRX201717000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eac6252e829a5666146d96141ce5dc8b75b4f679773c3fbda9b7c484c0670fa. 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/FRX201743096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5337a1f24cc966dbc25892bf03c96951ea1c017f261477e487836858ffe511. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FRX201743099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980d523ef2a544dbaf1dd412a100eb8ef9621af1851897e6d6a163cf390512b1. 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/FRX201743104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96d4d39cc45257aa78c40119366fa10e34362676f61d760193ce41a5b8ecd821. Chain 2 (Bitcoin): anchored in block 958703 (2026-07-19T08:36:12Z), 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/FRX201743107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab5ac2ce472feee751b0675dabe7d45fc0e2a39e4f0ee3c549bdc128e3f10024. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CZA540147401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54984696aa634c1e1a39be5c7287aac63371c8b0c3837beb8e58537aed293d98. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T10:46:59Z), 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/CZA540147402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae8bdfa1483fdbdd2c724fbe12b9cd5ba3ad96fed06be84219dd6ec9eed631a. 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/CZA540147404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306cb57e3ef97b4afcca0dd684d17596bb9239f23985da25df2c2a17eac3e131. 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/CZA540147409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2702ab93a17484ba9b92b8937a80196b7934e31b4ea8a32143d27bcfa1c5d1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:01:39Z), 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/CZA540147410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b67a534bc938e218079cf00b0ee12409ac7bbe939afb18d48c5e56b397f246. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T22:53:18Z), 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/FRX451573137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3140a30059ef5bd4487d3867c3903b6815f5e633912116904d747be439c032. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FRX451573141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf88c4426c0f32a4a1729aaeab595c0ffc512e11fba89ff360446b9f3229fabb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:49:14Z), 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/FRX451573145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07f8ac40ee3270d0765723713105be2f41a30f903865bd4f251d0ac08312cb5. 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/CZA259900381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf10e5b1ce7a9290735f0bad088a4702e326b8643efa5f1fab15a522ac348930f. 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/CZA161540947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d40868a7e25d52aca04e2d93a1660f3ebdd062c8e0869cdc582ce5db07d9445. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/CZA549830402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcab635f293b6ef322a3a5841f3961ec8b665693892aa23a82e4116c7b69fcde6. 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/FRX201743433.