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 0xd67b76e4500698df5d968e7adc560e3f5945295eec4334234efe016599c90a4f. 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/387ec2b6-37e8-46a4-a696-b3fcf4184c60.json and https://artists.proofprofile.net/proofs/artist/387ec2b6-37e8-46a4-a696-b3fcf4184c60.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 0x8b19f54ef9c042e2317fbb3ec384178339a2abc56efb87d01a00f1b448b6f4ab. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCJPI1972546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf771a59fce12b115785d44203330e3f158ebb6a1de2aeec908b5c875b5f15245. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCJPM2010584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb12049fcd29ef809ce348c78a11cb0a82f6ccfb66b377428dd8dd9e10eaf4d2e. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPZ922014109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1548bc743b89278fd93e7d272ea692ec62fd118b194c95eb4d1f8a77435ce6e0. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/JPZ922014110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7a75e4f7d6349c157c81952c0e0f23d616243b1083a0cc744f7139e8f02143. 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/JPZ922014112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed0aa250cada6852a1adb5ebbc1e48958463f4793e16b39c1cc75c7af8762d7. Chain 2 (Bitcoin): anchored in block 957772 (2026-07-12T23:31:17Z), 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/TCJPS2294668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54ed2c45b97c47d57a56bdfe3c03970d711564bf4c4e6f280ba760830463cd6. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:05:58Z), 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/TCJPR2291864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2059a6881e916051c838d296d78f5fa597cefaf63731fb56a548ea7a0bbb6863. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/TCJPV2315544.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27027892f4bdb8f763ffacccd892c7f40bab03b772099a51ead7396566ec38cb. 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/TCJPV2315548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69529367c074edb8d69cc532adc2c421c728ff3afd2a4627517816716abfb862. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TCJPV2315550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87efcb899c047765688bb2dc43ca36a7c2545b18a9fa3264e89002082152691e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:38:54Z), 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/TCJPU2385771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730b10bd8b17e62e7dfc9c693aafaa71b0729402c77f30219c8800a79e2ed697. 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/TCJPV2315768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83b35b9e431b14f62ad64d5a0c77e0def82bef17351e0b01545d27f6c8fb4566. 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/TCJPV2315782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67a32fc220e6a784e2428d3ef10a8d1acc0a6c101d60919cb9b8b368f5f0a217. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCJPV2315794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cf35e3981b6dc3fd23204e3bdecb8d9fff13e0f6d871541227edeeab119f96. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/TCJPV2315990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde7c85ceeee22597337ca79cced40669fb893574476f5eb149472b8141f4b41. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCJPX2350691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc002268dd46a583bacf659bef80e791f336c102cbe028f6d324a5d001bfcd15. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T05:53:03Z), 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/TCJPZ2462380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce805104cb10bd3ef6e6f241d8dd21cab232cb2180fcc8930353f5d2d8c784da. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/TCJPZ2462382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6f7eff113379834b96ed5f1ea47090bb7a1943055577f3813037fe8a0da4a6. 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/TCJPB2427247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac9eb1454abeb28537bfd5fad39e734a45d2c16dbd93bfd17ad33240304b91c. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCJPC2473002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde7c85ceeee22597337ca79cced40669fb893574476f5eb149472b8141f4b41. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPX2350691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe772701f41994be80282b4c5edadab595d5c651dbd8b4c1c0e2ec460faf9c164. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/TCJPC2474071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d16e2982b3eacbe4b917f57950020510b5a01c3826f604a755605dd1d932d5e. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/TCJPZ2416711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac6f7eff113379834b96ed5f1ea47090bb7a1943055577f3813037fe8a0da4a6. 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/TCJPB2427247.