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 0x74ae9e7c50ed6c195c64cd604cef0afbc749c4938a78534915441e73d7350ecf. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9dde00f4-d602-49d0-abc6-419ffbdbbcfc.json and https://artists.proofprofile.net/proofs/artist/9dde00f4-d602-49d0-abc6-419ffbdbbcfc.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 0xbd449ace43d519688ae5751e6f356d9efbbfbc46a9ce6d0338f68ec7d38e8b30. 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/SE4P51501601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf352103a8587f4753bde3bb6244478f9e9ef4c9e7a849d9628e3f46da2349fa1. 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/SE4P51501602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78b0cf2306490338e1500780d9d04f1ef22bb680fc9f08336c5370d980e69852. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SE4P51501603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeeaef5864e89109014239f1ea244d6228c4aadecf4bf871b55081bb1168564f. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SE4P51501604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe12cfa9b171e740803780b3b1b77d850c14498447356695a618d4e98b9aa4a. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/SE4P51501605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe760e08d4340f4dc00681afa45d0602760f0c1b72a64bcff98cebc2a944a2b5c. 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/SE4P51501606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9ce22e3e39356a7ca395f6331a5dcf9b7b085fe57545319004e615bcb38a0d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/SE4P51501607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x576ab8932b4f0fabeced85769cc79effb39106f5f888088e405f1626c7344c52. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:03:12Z), 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/SE4P51501608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f89ac2500813e26f2ad4086173dd137e0642c509326a047b2ac7c56033fff89. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SE4P51501609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea470430523313d2de786e8139c8364fd58bbfa5109fbdc52ad389b114364462. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/SE4P51501610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302e492f9009fb0a25aefbb9d83801d2235adacd5bf0c666e0c8bd614b44eea7. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/SE4P51501611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18e55b6520a447d69ed41b6b8927feca7f4ecc63636fb46a28eadb07895b39e8. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SE4P51501612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f99dbde9b71c68f8bd23313b66453a3d743980c66dc0662bb98efd9b007940. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/SE4P51501613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7da8258a2faae1933842b4dac035a5421ea1fba4448a28933ae3ce398705fef. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/SE4P51501614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5e8a9518c05a7785e865087f98ae2438e2dbd4de42c289b485f40c328493e3. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/SE4P51501615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4313bf7fdf2bec3908ebbb0261570c444ddc3e1ec5e31f788a2ded4d45fd3385. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE4P51501616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c720119c3d1aa52a610e7d2bdb1db00bb542ae83a89bf83ade253e3580dfc1. 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/SE4P51501617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0822cc7ba9b0d9eb497bb3d8b6e635d8afd5d7b8eeaa7285fbba7563a0a1917e. 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/SE4P51501618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8ce46442fee4a90fb97797ab9dea1d3ec6dbeb7fe036e005f7f7d0b83c02b9. 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/SE4P51501619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81094aff142d448102ef5ae08ed672d4ecb253d4aaac3ef8e16bcc130828f24a. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/SE4P51501620.
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