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 0x3141c6b8704939c3025ed10dd61c097632d2aaef69d1574c50375cd663cc63ae. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15927696-0b90-4c37-b6bf-7ec521532b87.json and https://artists.proofprofile.net/proofs/artist/15927696-0b90-4c37-b6bf-7ec521532b87.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 0xcebb80744a9534bb727112ca7b55f7ee3c68e9b586832d06bcfb0655efe65fd1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZ5AB1736462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbabf6a951f7f8ea124133957ac7904d16aa35d5acd20d631b4904401d5b4457f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZ5AB1736464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1571f2c83946d79b0049b99f0bad07ad7b066361f5c60984145f760ccf578a0. 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/QZ5AB1742366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8031d161a201a5b3a44e5c608c47c1fc56a0a0b9a88cd0caf13e8a279b597db5. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/QZ5AB1742368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78c5b998aa5969ba639219aea9688d50438652932f75624e20f2e43498278b6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5AB1742370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1004a0b1e6bea91d7b054370904b7babb9536915ac9dc98ecd9468e1445008f0. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/QZ5AB1742371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c9625da7d6980681ca66a5d2e3f791194a8d6a1278d764f456acc70a9529b5c. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZ5AB1742372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f44714a22265dee6e0c02d050bf6eb7da6d45bfca969eaa06ba7f63eb72d66. 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/QZ5AB1742373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c717bf59aa8a4881408b6c10519ebb3aece02204ad421b508616a2aadbfabc4. 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/QZ5AB1736489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8770f1bdd1b367b0b258c0253f314ae6e16326a900dcc1d290651adee5637573. 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/QZ5AB1736490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15e9d16fc6d27ff634b798035457c5f280ebcefe3844fa7ccbee4260b41cef7. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZ5AB1738646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db01017924d24b80b6597812bab5bd98f06cce4e99bac3dbeae03e430861cba. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:09:55Z), 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/QZ5AB1738647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07bcfd93c024e4861551ead982d16e8dea9ff6f5fd21472b621893fc8838d76c. 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/QZ5AB1738649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb128e8e3c2109e37f1d5affd71fc14701c110da02029f17a7b8f7de98aa277cc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZ5AB1738650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42721af32788f15a3a58330ee674b2dc7481119fbda988137674ac02b28cb777. 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/QZ5AB1761749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243f1f8c8556456fa84d2ad47ac3ebb1ab3a9a89d3c35ad43f0384b6a28f20b4. 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/QZ5AB1794686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44b17ac9dd38a030ce1aa33618262605475134eb4c6fe6835203afc2ea5294e. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/US7VG1680199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ff7f8bfd00ca287b6a8da6e14c6d440a1ba6201e3345b0317b3ea58f8493890. 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/US7VG1680201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e56d55a3637fe808089887b8329f98702b55436af4e5bb22402c1921ded6a63. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US7VG1680206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cb9dc781c087e32ea149a2f28e5714fd92775b412d1976cc8a1d03890e3f26. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/US7VG1680187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ea5544606c6699511a40d4bd7d7836d93bec957dc1a389031d542de20fbcab. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/US7VG1680188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbc34fc7bfd55990727238d89ec7ceaa83d11432150159e1e40897368f752bec. 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/US7VG1680196.
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