1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5542070ea9eb4e33aee278d816402be3f6956ef71292cc4161a4c8ecd400f5c6. 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/c78f311f-67f0-477c-8eb8-ba92339a238a.json and https://artists.proofprofile.net/proofs/artist/c78f311f-67f0-477c-8eb8-ba92339a238a.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 → block OTSBitcoinBlock must exist at that height 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 0x587dfde10d77fcb62aeb03d3b014fe2f0d5d16ecd412300cc5e1578ba1808fce. 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/UYA130200252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7fa672aa457cca557c32986d0a41279d053ee5d96771db7efd7f3507bf1a94. 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/UYA130200262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6adbe2e6a8f7a6ebf8aa8fdea1919a997c8a060052bcad11554827061f1bc47a. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UYA130200276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8b70e5eb59056ffeabe9fd5ddc569b28dfd834bc7feec3c2204a2447395854. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UYA130200288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f08b6278fa67b299cb0d1bc53bf5e47aac369926c39dfb2d705fe9bd9a494d. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/UYA130200317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeda5b770df264247573b6e81d27a78a29f83b9ee49c3cc59cfcc5ef85dea40. 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/UYA130500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912efcda679b528ff31d14f82ddfd19b9eb77faca191fe85023c91e71c8665d3. 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/ARZ020800629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea5451e4361e65c996e61309972d4c4f31e13d972cd0dca8b58f4786940e98d3. 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/ARZ020800630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dd90528768508f3303fdc6c5d5ce4a54c04897ca085fba43acb8a46b4279098. 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/ARZ020800649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8daf3002194896a2c8aab33e4441cad68615f93515ca9706113ac9a6e52d0694. 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/UYA130200318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d0c86b5b548d4158ceb4e4c011a79d6c30ba8da876278385796c32d2e0fcebb. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/UYA130200282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fd607a2008d147aa5e23df1d81a1d64858abd04c34184e0c85e647e40b5c2b9. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/UYA130200237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d3ee41dbb94659d74a4b8e9f24e9b55475a9fedf7006c005666250e70b310a5. 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/UYA130200244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af07580ea878611e8590a3928ff0810a555f3dc9bc956758ec9dfa56ac59e9a. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:46:49Z), 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/UYA130200247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ba4ff482a17ebf8cbbbb6c1052e690efd027e7eb9d33ef659974c2b13a22226. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UYA130200249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfedc80d8f53655d37dd0caf0c88d559feb3f2fe90fe0a2aa7b1d6dd0c02b13f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/UYA130200251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97a0937cf708c48635128c49bfd15203fc3af8f16b4eac1405c145cd96717180. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/UYA130200270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91fda934f7f3d12479463008ae62feddd568ab68a278ee2b2aae061882b07f9. 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/UYA130200275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bab6ec3014af5e269400f0de7df7714bfc0edae4b06fa9881019d23ea97d89f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/UYA130500079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfeda5b770df264247573b6e81d27a78a29f83b9ee49c3cc59cfcc5ef85dea40. 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/UYA130500082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb8863bc27057d80c27daa4d6800c78839e1e62ec68dd3132c207f0c2f7e3c27. 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/UYA130500083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1c491e34f2553832cfda66381600b594cf5ba52ba56f9fbf0966f1cffceaec. 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/UYA130500085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733736d60aa382b2dbb7734053aed60a86df72dd8c03ce9a702f710b70709505. 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/UYA130500099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f64398f9b7616a2556fde88a227c921e1806bbdd11103f0483f72cfe70eed8. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:20:13Z), 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/UYA130500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcea8afd255d147de2c1723292696ed677c852bd9dc2b80c5756bacff8f367eee. Chain 2 (Bitcoin): anchored in block 957892 (2026-07-13T18:21:16Z), 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/UYA130500132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce28aa4b268c80928983522ba15ae681760668f05c99caa187d8efea141b186. 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/UYA130500135.