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 0x544ea3546c2db4307d684b672f6ac3893885f46c3b24567d318ae95a7619d728. 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/9f128eb9-b0d3-4a64-b6ab-d55809f97729.json and https://artists.proofprofile.net/proofs/artist/9f128eb9-b0d3-4a64-b6ab-d55809f97729.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 0x2b44afa65763f7b86bddac470dc0c78920c340faf286dbdcf36e1607b7fe56e4. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/QM84B2385003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9acc8eacbc573377e42f601625191ccd20f3f9c5dcfc5c4cdb06631e9a26a1c. 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/QM84B2385004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f2852caefc43483b22b438a114a0956d9aee5b6f11ce4bc3610151aa17548b. 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/QM84B2385006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc54f250c6751d645a63307c57628dd83042c949aebee5256a17b5d5074acd1. 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/QM84B2385008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8e448d334e696676fc83dbd0e2378567417d81bc183138abace90d07b8f086. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QM84B2385009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a88a480160dbe36f6f2698ed1110e3f449e1494a4d94156daabf36ccb2c1f6. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QM84B2385010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87930d3dd8a0d7e28e3c413738789ef5842dc261180aba4a06f03785c05d3f20. 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/QM84B2385011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681397cb393627aa04edf0fb304f7266bb33c47b0a452eb0be532a6a5bf7e6c7. 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/QM84B2385012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62da9c663eadb9ad1d325fba7c7826788ae675318299bceba494cf118d722462. 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/QM84B2385013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b44afa65763f7b86bddac470dc0c78920c340faf286dbdcf36e1607b7fe56e4. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/QM84B2385003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b8e448d334e696676fc83dbd0e2378567417d81bc183138abace90d07b8f086. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/QM84B2385009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a88a480160dbe36f6f2698ed1110e3f449e1494a4d94156daabf36ccb2c1f6. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM84B2385010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87930d3dd8a0d7e28e3c413738789ef5842dc261180aba4a06f03785c05d3f20. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:10:05Z), 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/QM84B2385011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x681397cb393627aa04edf0fb304f7266bb33c47b0a452eb0be532a6a5bf7e6c7. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM84B2385012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62da9c663eadb9ad1d325fba7c7826788ae675318299bceba494cf118d722462. 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/QM84B2385013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca251271b9105a1a9e3634f6ca2cc24b99022132dca42237246411b7c0b4fc89. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/JPB622400710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0d59d3a358d9d390f81ca2f1d08a31afeaf9cb13bc8b435c445213ceddcecdd. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:21:01Z), 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/QM84B2510503.