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 0x97db33de420cc2fc2fab386812d70d3c6cce6a30d284ce27a3b16e135c44ac11. Chain 2 (Bitcoin): anchored in block 953616 (2026-06-14T08:58:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1ba4c6b7-7a3c-4663-979c-b998a549b1e1.json and https://artists.proofprofile.net/proofs/artist/1ba4c6b7-7a3c-4663-979c-b998a549b1e1.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 0xde7dc7ce5429d773ec5ea93d112bb45369b0d5da8bccc892d50cf39b9a99e95f. 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/AUBEC2562988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0e6ad1ebe571208b05027a470810facf0e010d5694f79fb461e9ff58d56b83. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUBEC2563038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1b5398b4866e8852d8a0d4578673da725941ef1615339b0358c1ea974ab1dd. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:31:49Z), 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/AUBEC2563039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa0572b43f7299292ea5ce870a1401c100e65b45e01a7a0ea1530abc8532241. 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/AUBEC2563041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd728048729835a1645cf273e25f4366c73f2d698f9f583403f89110a5580dc68. 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/AUBEC2574833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51682a52b99bb2096b72ac2b71acd6ee9827ca5be992dee61c897c2de8b588d. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/AUBEC2574834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f4d3582cb1dba86bec7f57a5d61d6fbe4cdb042a63268b6ddc855522de8410. 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/AUBEC2574836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2ee0971ba9c5655a677b11c9202b1f03f7fa1cad715f2d6d242a0adcc10e1e9. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:11:40Z), 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/AUBEC2574838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x147448a1ff084b2a0129b6d47b8c8e9652455afc601d145cacb0dfce94d9ec64. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:12Z), 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/AUBEC2574842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16c5c953c8af8d58b1dee4858d47dbd743e13b4055205ced454a5ce0917c5a7. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUBEC2574845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94f575f5c9c3c8af5aab1f853914552b8e002da7e2e0efc66a8bd22c09984cb9. 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/AUBEC2574846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa920a622db16ac2cc4413d855377b2898514e3dd006a7baf8c4add438c71c6aa. 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/AUBEC2574847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x735360219077c698d6b0f9f62467d000859edfa9000997be15931ba9bd356444. 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/AUBEC2574848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa46631fb6dc91de932461274625f9055ae3a5c1d89346ecb4338867fd3ad1fea. 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/AUBEC2574850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99fba03eb9f928af875812a62db5b77b9cac72d00ff19db727d18fff241d64f. 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/AUBEC2574852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e368f6d3112be396a9406f26d8b54adc6c3ff45c70611b3d16b21ea84a1b9d. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/AUBEC2574854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f9771d8d0e3221ca716dd5c1b19af0dd8a7a704e651470c887fd66b32c0ba9. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/AUBEC2574856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2620476c000570d433a9ab48a0d6331c08800e05cd1e628b5ea562e302119001. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUBEC2574859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05756900352f30f2a237eb9d6d9970911b523f47d9ce064f4865c5321f57af0. 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/AUBEC2574860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4505e3638dd18651058872c4f7e8a1971d47c067bd99b41a4cd26a45f142a6ce. 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/AUBEC2574861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dc8149b647ebf8d76f776f655891e541a1d39ad8e0436190f9feacc446e3e72. 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/AUBEC2574865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3ffbec02f83dc4a4ad8a346c6f49071d116d98bd89af2552e52bcddad6fdc87. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/AUBEC2574876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e15ef88558dd300407bff59bad0c5a2db22cfa7feb04738a8a49030b4d242fb. 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/AUBEC2574879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2598f5e9a8b830b2da8e360ca8e875ac1c76707659b3f924426871ccd76f95. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/AUBEC2574885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbde5c34876718688d33a5bb475cef8b6fb9141f4b87df3827194d11f1d986052. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/AUBEC2574892.