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 0xe9cd2b02938eb1ce0a27e226cf3a870cb460783ebce4820b850c84aee3dc066e. 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/77440641-52f9-4f2a-bd3f-872a331de992.json and https://artists.proofprofile.net/proofs/artist/77440641-52f9-4f2a-bd3f-872a331de992.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 0xabf2519677dd60ba64f1dac6177e2fb96f476701f8404878511b8e08cc598e52. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:11:33Z), 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/QM6DC1511587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c4f289ce16ef7773ced42982ebce8170a4af7ee8a3978478d7fef9c81341f9. 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/QM6DC1511593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe42676b90e97ac36846cb162e22b6182d2c811ff8c440d43d6f22966e37256ef. 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/QM6DC1511594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c13e57246b266796e8043f017e7f47b9585c9e070a4126c54f7b6493e554cbd. 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/QM6DC1511595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9c3f211ea15d2bc3d93f2ab0b374d4a7cc3e57723c8ca7ed889cf7197a3182. 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/QM6DC1611019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580f4bdab5b5c51c12cd21df34b6c7bdea7e2f5565650be004aa010530bb5c29. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QM6DC1611020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc74947c14a2cc27bd29dbaeda94501b1a68c8406c445e1aa354507e0af720b8d. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QM6DC1611023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2614feba26f7596b8a7983040ea01f045b645063f113a80c2754d8e69672b3af. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QM6DC1611024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0226d8787b5de81e03aa14734436fef3bbaaf54a0acc8a5a650622346f24239. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:07:00Z), 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/QM6DC1611025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aeb10c5a6ed55ebd30f2ee410424b74e933b0f573ac243902be0cfe70a03156. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:29:46Z), 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/TCACU1690564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x361e2ec1b2c88dbc3dbf44530d209bb8d60c32f6cbd4cbdf9335d885ceb38ea6. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/TCACU1690567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec20edc123f8831df1ca1ab22edb941bd95b0067745e40848e1f8f07ba234006. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:04:31Z), 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/TCACU1690575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06a583cc7bc6b6b913b111277b13faf097056e769a527ec18da234506b91f03. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/TCACU1690582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc1f3d977683c981a75b618a9335d1aa48567ac9c49dc93867f32bc0e4170fe. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCACU1690585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda659606cc8aee161b1435208efbd869617593e9175be862cc0d5dd5859a1315. 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/QM6DC1858149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff2dd046a8d064927ceeeac00ef1e2f81e4a8c4fdc63943e4c54846a9d29efa. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QM6DC1858156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a59e8be9b189da0d96a5b64ee63e17ce0eb8f134ddc73227cdc540d640e50c6. 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/QM6DC1858157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c385402eecf66392b7b62539d0d3f9a0e0e918ed80429be39c7d9f300917755. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T02:14:46Z), 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/TCAEQ2070005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1908739c4f3f1455699913d9b86cb27ce1b37cb8e092e1f80a55f42176f3b1e1. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:44:39Z), 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/TCAEQ2070100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e56be51da4eab744c057d76493b7579d48338da37fae8c9c6d3334fe23d23c3. Chain 2 (Bitcoin): anchored in block 958487 (2026-07-18T03:43:59Z), 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/TCAEQ2070117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6c9fde25f680985c51189f5c0db54ca92e8d18adedc3aa8e60a8607b20a6cd. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:03:22Z), 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/TCAEQ2070142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9858338376c1802f854905aacab36699711339eb842fc851b8594aa5502b4c5. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/TCAEQ2070169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb579d2e92949c01d9b4bb7f27b4dd1ef6930ed662ffa28fd70220aa339dc4cc. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T03:58:44Z), 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/TCAEQ2070176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08d58ab9330850bb3ad7e6d644090a8ed0a34d3eee704cedc6627acff589c73d. Chain 2 (Bitcoin): anchored in block 958733 (2026-07-19T12:51:21Z), 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/TCAJH2587543.