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 0xc01bea44a4e9db7be34ced8fed398958edaf1775c1ab1c171e26f3d8d90320c5. 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/c7dcb998-369e-4473-9be7-ebad4d9342bb.json and https://artists.proofprofile.net/proofs/artist/c7dcb998-369e-4473-9be7-ebad4d9342bb.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 0xe2569da83a298a8c0cc7b44b2dba72bd389e51c075d0ed600f61639b1fb7fe23. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZNJW2110192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3faa7e864917b4b29447a6dca04d93451bf43b80546390dc878b81386bc0e2a5. 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/QZNJW2110193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x542d0f9babb7fd5dc8725a0307002cbb08a554375c544ba30428bb69fae65d4e. 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/QZNJW2110195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dc01136a112d3658a0185d7181f2b166a72c9e6be4b9602bcca7bb5e7410021. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/QZNJW2110196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x194e5cf035b0b69f2e5bfbdfe2e401a0b0ee9a9a444c133223189aa4795938c3. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZNJW2110197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea2ff3853b5379fd526da9b563a4deee77a15cf91089ea1dd3b5abea949dd43. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:53:40Z), 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/QZNJW2110199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa372614a57e0099ad42477912bd6d12e20eb96f6a2dbd5fa39c388bd87f034e2. 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/QZNJW2110200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdca91832b98b180d227f3b05ecfad64fc30fcacf71de056563296c30810976e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZNJW2110202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f7fcd1220fe2bc1eb964611b4ec1ab9c41571f9f4ebf040e988f118c6779e59. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:19:22Z), 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/QZNJW2109400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e168a7cee6b40c314656f0e27e7d0eccd8bfdfea27be91ef310da8a63d7ea8c. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T02:16:33Z), 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/QZNJW2109402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55522e8f9dfcf43bfd2c2680f3ed20ba103f28add23c9111dcd03986bdbf38aa. 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/QZHZ32250919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa051e7692c2cfb3048756f2a275cbad058392377999c764f898ed5c7120f234e. 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/QZHZ32250922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6e57ec6b6d01d90c3b5bd726556678fe0f4a586c18218f96d4fd274cd38ff21. 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/QZHZ32250923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666eef0fb888f6bf073fb85b4cba01a873f7a669072dcd4b58a0e3a831296162. 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/QZHZ32250924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb99c47351a478f1ffbf8dc1634cba54cba84d6b8086284dbf6eb80426dc02391. 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/QZHZ32250925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb554236b7adff5022e4d0c88cee068ed875f7aac87c315533c2196cde85f707. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZHZ32250926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8bd8666e285f0c654d9a16d159368db33dea877260b583b17cfe2ecabccd66c. 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/QZHZ32250927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee8ad1e2a344ec87a8d01747c4e7b0e64bced1cf521c25f83ee596299435151f. 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/QZHZ32250928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd342afcecc9f679573d2b0817efe88b027531842f42d1f9ae602f310e6653bfc. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QZHZ32250929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a57516aa6ce3369268f3d9933ef48f9c9599f442dfbf2cba63a8553681f8d1a. 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/QZHZ32250930.
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