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 0xa7f9bae536f87c079af502eb76bf337f6ec5a3cfd645b6dabdc9bfd8063e7455. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/be4371df-0ffa-4032-b4b7-83176d6c27cd.json and https://artists.proofprofile.net/proofs/artist/be4371df-0ffa-4032-b4b7-83176d6c27cd.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 0xc74067c24bad8e785b34922a9758788f1fe47b3c5868f5e9f71695a6b6acf4c2. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZAMM2179658.
Remembering Asterion (Rest in Peace Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36d5004b609d90f0b15cef2041346ff723ab56bc7e85f28b73eee277adf74559. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QZAMM2085016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe267721df34eb4254b5dad5001c29ecb5ace1cc8f55fd3c1b35053a2689b84c8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/AU3SE2301467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c965ea1b5280318c0454e2393dcc7b35e024be9cb0be10a4eae8b02548619a. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T16:58:03Z), 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/AU3SE2301468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97822f459a23840c78a571bb615a033851321a58c816be5775c39a457f72fa86. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/AU3SE2301469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc740d3dc25218acc9314fd931f0c74608d273fe71219e5ebb0c7438f76c4f9e4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AU3SE2301473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545cffc220fd0020e69827caa23275a8247b5c9b0096268df3229cf5ea5167f6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/AU3SE2301474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4aa5d973675661951075a02fdd07d721120fe2e1d25327bab9235645ea0df4d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/AU3SE2301476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506dfea7642d6da2bbf6bc3ea22c9e7a529c19f1fb822c945bafc665f8e9cd4c. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AU3SE2301479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24b0d4e51971d0608b74e8e6ae76c323ccd4da8c013f9e4692b0e6ebfbce666. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/AU3SE2301480.