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 0x128f8188fcf131764beb9d6ce522cbce8e2fe36eae05b0e5514d3317e2f59be4. 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/c6c79968-eb34-47ab-865b-4098c0c27a53.json and https://artists.proofprofile.net/proofs/artist/c6c79968-eb34-47ab-865b-4098c0c27a53.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 0xf254cc1503bc7bcc81f3cd3230ee8fd36fc764f02869d15c3513e29e007846db. 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/AUMEV2425646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b6e228d7c33465161def0cab14ba7a7eda38094c1670747ad0f95b33de0140. 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/AUKDT2300117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ac0b78182a079895151eb7da2e1fee86ed4487102e0d3cf7da38db59e6d1889. 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/AUKDT2300118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ab34ca10ef8ed9a2a3061166e5ff2a2f8c43090f441d6a023b324a82759726. 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/AUKDT2300119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26c638c2d376b81d90c432849f0dfeab8644fbda2fec5b6d94aa2113c2c97c54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUKDT2300116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd31b1923faca77e71e7272ce34a8f055fc5a4a4e12ebc86e99b8bec34f0f4fd7. 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/AUGBT2310483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc373dd7ed7f097ce65631c7b027a6ff2e30e31dd2fda7a5b8d067e4feb828e64. 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/AUMEV2342524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba7c9e320009b2bf1a31d16fd070484757af3bde403776ed190d008a25c26c4. 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/AUMEV2322576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2911c33730537de64ac5a60622ee87c6950f695a1c556ba579b33c01b64821. 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/AUMEV2307305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x929bbc62b7d14918bdd4a70d538d102d45386fa9777f04408d6426ecdf64ad54. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUMEV2529501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00af0e9980ab676b866596866a7361b413ea7c0ec52caeec032500cbdf013ac9. 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/AUKDT2401315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93a50ea0d1f1143d9c4932a7e991ef3993ca67bc1e3bfabee0e6837029d8226. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/AUKDT2401316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ed4b6e7e560e10dea8913b8cdc74703f50b349ab11bcfe7d8a6156f5038f11a. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUKDT2401317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229aa8f26dc6e57f71cf97c0a7d41cefbdc553dab830687bc3facd4cbeaa1804. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/AUKDT2401314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x229aa8f26dc6e57f71cf97c0a7d41cefbdc553dab830687bc3facd4cbeaa1804. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/AUKDT2401314.