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 0xc1f99f513c6fde27525e06f3dda9fb22b389a379ef2d2b128eafdcedbda76461. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/bef9811f-87e1-4174-a3de-4aa4043d07e6.json and https://artists.proofprofile.net/proofs/artist/bef9811f-87e1-4174-a3de-4aa4043d07e6.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 0xf313debe50a008ce1d1bd487bd5604a188fd82782141151c10e468ec6cd52d38. 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/GX53U2425512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb040a9b48abac0dc10eb919c7738df193b5a00e58a45ebcf4a4d32108c9b02d1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX53U2425239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64fca83a5ddde8b3297e586f271e9b195cffcf1c725fc10f99afde57c58ffc26. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GX53U2425577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9fb5b7064c4b7b72a1b22fc591c81972a014e4c642d77b1b2cf33678efd0fc. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/GX53U2425578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cdfc922dab35a62f87403dfafe1a4290412b9bef0016c2cd89938417d517d86. 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/GX53U2425579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325f0875738e02de6767bd09984f6acd68ecf61218e82be889f8e29e2d728863. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GX53U2425580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd754371e0e0408e1fb6d285e549d42bbc49b7892b0c9ab5c5f31e16c7c0f8ca6. 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/GX53U2425275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a948a5c384c147c2ae6343b402e83a2a67fb0815006fec471ee4e99bfb595e. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GX53U2451272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e5378552a74f2c4270f356b323febbc424016efd868763b899967d0fde07e4. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:05:50Z), 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/GX53U2451273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31a336b5cf529bc9f0283de57ae159d388b0ee52380e476b134f13bd60e89d43. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/GX53U2451274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5ab84aaaad46e56390c978cb62f69906a51328c28e85bd9638f3f976caf0ea. 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/GX53U2451275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a75dcec849c01ddfc803edcc6ba4874a89e4934d1bb8eec22c53125bc683bcd. 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/GX53U2451276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0c53638838d07d539406862345238c460f35f35a79a025821549f00a2841a8b. 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/GX53U2450672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x609a33a493a297e3d8ae31e2fa69655bdbec1c5ccc977ff776e8fe75290369cd. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:45:58Z), 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/GX53U2450673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4933e359b30da958981d808bad953d78367aab8d7e85310ac284cfd64713a10. 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/GX53U2450674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596f8105ef630c0da71c1ed9a5f0692ac1332113c04b03bb10327b6aac50aed3. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GX53U2450671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b41b9c5b57157adf81b81edfb0af5297a14040f746dcaab6ac3a0e444bd307. 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/GX53U2450670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d6c0647de35b20b3f1f07d8535610ee00ad70f638a39c23c4b54322dee9b4b5. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:10:42Z), 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/GX53U2450655.