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 0x3acb6e557ad794c8facad4dd75d7d05d2a0dbb7fb2dab2b0433637795a2144ae. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/24c71c32-c9a7-4ae7-a3cc-a478bb0b72e4.json and https://artists.proofprofile.net/proofs/artist/24c71c32-c9a7-4ae7-a3cc-a478bb0b72e4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Simple Man (Live from Arts Printing House)
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 0x555f8c6b3e83fbad7f4424a0b66c621b1b34a9d353a8b530725a109a4a5c2220. 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/LTC101600007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7327ab76454a9bd567319f3e9ab60251c9400a90c70879ce46472900453e85. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/LTC101600008.
There's No Past (Live from the Botanical Garden)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e82436263c527ca88bb0327ce7cee7974659076152667b817f5cb1c5ae94800. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/LTC101800006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaef4f7e9d8077ac40b47e6ae15ebfb1628c13ec8d277cf22e56864eca173fdc. 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/LTC101800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cbfe2e453921af7ed9174347e6f8b4061c2e3c0603ed56fc478ccab6e6e615f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:09:35Z), 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/LTC101900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecdb992468522efe14b38c59fc2d6c9e3a20c46fe6b15984110eb0b7ffe6b86. 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/LTC111900006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa43635d97001883d088c98c2ece5a48d0edbf548de30320c42949e62ea9b7556. 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/LTC112100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e2c617f64dc0eb2dc3a34ad3272967daeb090e8daf62d2b7f2f5be9fc0666c. 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/LTC112100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1258ab05584d02419ef7ded94947fa70b1b3f58e992225138fa12e00b4885868. 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/LTC112100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8971199b0efeed25adfb3ca6ee61f94665c8df9cdffb6f59586532d4940a3b26. 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/LTC112100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x779bbbab67ce3543c52b07ad281d6d3d1d7da133964c8303e785ef248e46b077. 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/LTC112100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x994ca8457a7933e8b26246c2196df496934d20fd3607e4ba95d712268c0d04d9. 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/LTC112100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x672f467dd7e4cec266b832498015882961978fcda858b3e05a20f136bd4d5ade. 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/LTC112100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ecfbe5830f55dc0bc55cdb995e797dc05b6ea4eca29c69523922e3c592a68b. 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/LTC112100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf54f007e993bdabcb1849ea93dd64cc1a87090609651ea7a98681c52e05a9c3. 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/LTC112100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e20e3d639bd34e4e6e6e83d14cfc1c4d1a7a6defd79deafe52ba1fdfae98b3. 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/LTC112100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0196c72bc89f503e9f25ec6839f1ceba6b95eb185397464a6e216e30b429c009. 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/UK6821902752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7dc315cc6dc127cf30235cd1e0aba95a8d05b8e46e5425548878e365b1b0d1d. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBTEZ1601018.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch