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 0x4f4485a5b038578741f356dd9a067338fa92ed84623f6440259ec43d81c70fa5. 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/726abe3e-6393-48bc-9849-3cc4660f45a0.json and https://artists.proofprofile.net/proofs/artist/726abe3e-6393-48bc-9849-3cc4660f45a0.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 0xff1bd324ef3f4c81e3f023905bd589ec57ff9534922b1f8f96fa8a8f17f0f777. 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/QZMHL2218708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fecd6f6240068f10a27bdf5c074a77f525cf81388d23b02120781a1d990c993. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZS672294806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f815b57c62930e843395d390a1397990e94069185d4159967beba2caccc7360. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T15:36:35Z), 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/QZMHN2358156.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebe2944c157a5399a8c751912801842e4415e05237aeacc017e888b7c5822bc. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZMHP2378027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06ec0bd55aed774790a08ab0d7ba254200d775a76e951742177b3afcf031fcb0. 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/QZMHL2362270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d8c711e20ffe183659addccf21a842c7a89a222e8013ec147c6ce869a4e600. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:10:50Z), 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/QZMHL2218937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74d3281e975cf992646a606fc884fb838baaa38278e2afa7e0acc86089cf9a1. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZS652467849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2908c0297ad60a4e03f2b3819372db7260d961f624c7533c09d47cd7bcda5540. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZMHP2404565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2888f8b3f27b1c8707bdfd82ba2034b69e8203f6e85ee3deeced131c21f2ff33. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/QZS652491067.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb350a09c83db210adaa5bae1593ae03e728ea8f1969c25aeb47261001059f6b9. 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/QM42K2472484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfaf503b4d4526c89413e4b3deb681efd624500505fc38e7a37d2e804a5242eb3. 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/QZMHN2438490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e2404042560ec2cb5a248089cdc38a933f5a3b67615e281b2b7b3dcf408467. 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/QZS672451639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f7783dd410f5bdcf9386936804fbb0432432eb1144ad962b6bbf817a9fd001. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QZS632488852.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda97b83aafe8c9c44c15158c9abdad06b40c87ef75165d94b5aca44536cca881. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:58:31Z), 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/QZZ8B2411565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa866439185576e072fbc7a6bbcf6e6189e53aead0188dd671f9c9fb733ac187e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMHP2508537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa49de7ce0b13e94da23b3d24a2588c5447fa9a71af93cd190831a2a8acdee5e. 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/QZMHK2571904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdced186aa99b17d745f9023f6a3e1dc59a51d6b763ad40caef44efb258056600. 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/TCAJF2515924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc32dfb39012770b80d879bc606edadfe7ca6b2daa0a4c4dd50a0403e6f667b93. 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/TCAJF2560000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f37d9d1da2547e947b962408fea657417646e19c4bb2744574eb2f4900be25. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZL5N2553202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550d9611cfc069409fe94800da7d23b7bc0253077013bc9d26c1dcb922e433e5. 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/TCAJH2537894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46035541a9d82fee840f22a3c11c36b25f2fb5cc3fef247a3cc55c63e8d42848. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:48Z), 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/TCAJH2581397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56f9ad7d660b4c2dff5929a586445ca0eb771edad6c43c4f9c8dd449915d7024. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJU2513544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97d25b3a1695052b194f1693d1539442a52e56c7f8020b85e510c5267c1edd8. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX282561256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x157de748369836273284e1643b7359974d5f346b2a51d0e120520701653b91c3. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QT65W2525894.