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 0x93351ca3daf86a971220b31a6a855a19ac03883eb11f63da5deca859aab6f0ae. Chain 2 (Bitcoin): anchored in block 953687 (2026-06-14T20:19:15Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/69040010-7833-469d-8853-0e11366deca5.json and https://artists.proofprofile.net/proofs/artist/69040010-7833-469d-8853-0e11366deca5.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 0xdb702567a3f4db6ead366a269934a8585f0064d101c99180b2be08c6c2641c7a. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZNWW2398787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac7907fe6d60f8584414e46e9f35c77b47098c52d57672b6e14ef1fd8bb35f4. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZTAU2434429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6171492e96837734e1081c4a4772430ea00a390ac837a23a93e8a25cd965cf. Chain 2 (Bitcoin): anchored in block 958920 (2026-07-20T18:14:22Z), 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/QZTAU2434410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80d0036c496fa5717be432823a1d1683cf377f2c4f7142916bcda915bd9e2b25. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/QZWFN2460825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf29873da471437999d82b694f2df005281d3a1018e5958e176827e1c23103d41. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:54:41Z), 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/QZWFU2407538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec44da7391bd5c981bfbf796e2a2f9940957fff85e898d94f8ab7409422403c7. Chain 2 (Bitcoin): anchored in block 958800 (2026-07-20T00:52:19Z), 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/QM6P42509874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c5e700c21d4c356f28fc92eef1c0742fa7e3cdbcd821f81a2d50e47a653fb7f. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QM6P42509876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf77620b73443a5962b30ccbe052039abff1160537863d9526da5181ba5a09b94. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QM6P42509877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1547136b9218082cd0477909bc8996a5c6f2c2c0007c74936a5745e679a6397. 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/QM6P42509878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5726ef688f414a08b94bdbc5624973eb551ca67d7b4692f0cd6ae1a3b5bf198. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM6P42509880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc99c33de7d3b1eadaeabb84a27096d4463fa0fa9514c0061dd53dd2b889a86c. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QM6P42509881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7e7f45d8d22f0168d95e8aefd016ad9f6fdb454b0b2e3b2c225d12896d11347. 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/QM6P42509882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef21bfde46894293438f8da73d47eb4370309dc89686fc11939e05cd219e2a3. 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/QM6P42509883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82529af6d9afeaba485050dde833150fecad7ae2d17a10d198409fd1e0d5e457. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:15:40Z), 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/QM6P42509884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d0ee0365acc06e8e133f9f2fad950efbf403fc1fb620f2559855b02a72a66cb. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QM6P42509885.