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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f1c11cc19754d1e3a92e559637c487f593c6760c4d978eac09ca9646f5fcc2. Chain 2 (Bitcoin): anchored in block 954693 (2026-06-21T11:50:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e44a0620-9096-4344-b1e2-753e803a682f.json and https://artists.proofprofile.net/proofs/artist/e44a0620-9096-4344-b1e2-753e803a682f.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe294b899fa2033820db7e15f921d6bbef8d2348bc8b0e7be9fb5d2418d6bb18f. 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/USHM22147789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5c712aab9dc4a13f01a241d612e36e4a95fb83a3bd1db822c90a0574069382. 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/USHM22147790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647a933e73ef43fef4ec6e162e35eba41e5035d0869095a1ec80c0a323c229b3. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/USHM22147791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb287be4c3f8fbd696454a9a6981f32b9fcb60037c62c7f596bf0e043b0bf51fa. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM22147792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e3f08c9dbb62c5dd835b31e6b66953622feadf7b95fc43e099bb12f7a00a42. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM22147793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x208289111c21593c9889aeb14be56033857c03e76bd2b5f845595cda8cc7c953. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM22147794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b92e0b7d73990a08fd3d46c36a93ef62586a2dac85ac6673faf8fff3379690. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/USHM22147795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56efca38469175976b24888910be3522bb5423b22deb82f6ea3bc96dc4ad8a40. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/USHM22147796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27a9112d06407becb6eb86cc0334175c7692bf8f97b83b58301a727d7fb93a75. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM22147797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66ce8e312f4799a23d1a8f7ba9bdacb3a83cd3f9295311aeb1659bb00e33d09. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/USHM22147798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebeb650ed9a8764158091605a2371393185508e27630acc2a07f2a9089289786. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/USCGJ2243764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35924b520333fede20ad500371b038887089a8859e59fde5fcde5d9d09de2c77. Chain 2 (Bitcoin): anchored in block 960305 (2026-07-30T20:14:59Z), 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/USCGJ2243765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae17677f8faae03ca0a1b76792830f896b0061f8b680442464d2e6928c309675. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGJ2243766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d87e47eac9ed4c3d1b5bd5d72248ca1b69170a439c8595c6e02cae5bbbee94. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGJ2243767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34332137fed4f28880bd445fac3857e3b4e048a3073fa30545a204d7995e6e55. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/USCGJ2243768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd075713cfc3addebacdfe41a8c091a6632be645d1b74ba5b1f3fc216280fe21. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USCGJ2243769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f0b0827d6c84909e1e6cf768d1813f7662766493b53d1a2f3770ac32ff2285. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGJ2243770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb187de41ad4d67fb38f9ddda5a7aec69741ab8fd5d6442dfe18117bff87167c. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGJ2243771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdc9507a7dbd425a18a7d03bc536bb47894d6e40c8242ae892c133851d84d79. 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/USCGJ2243772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9037d4433bb05bd74256d3804ba01d97e0c929fa1557fdf002b4fbe350833308. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGJ2243773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5567e4f892d17ffb58684f34fb7d0aa1a33f25dd82cccc15ffd61ec0ea82a497. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/USCGJ2243774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ab5581e89e245d0712c8fb0b0ce83926b6fdd33c6723d6e22c9639fd3555f6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USCGJ2243775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c6e0644146b8659d9d78f6571692b49b01e523ba3e9fb6494ed603daedc82d. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USHM81978210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34e597c92cca2303be1a8f4da3cee82899158516e3403d0f2896b11072885184. 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/USX9P2366172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa777b0bd7ee91b6b09a7e18646da2b296fbd1210d0c9d6f079a4125c8b77a1c9. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/USPUS1502716.
The World of Tomorrow, Pt. 2 (American Poets 2099 vs. Mysterious)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6619fabd3a10a82594636ce634f1e82e00cb99f4d62f5c4055dfd853dddbb606. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USHM92290853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ea92c410a872871f570a8379ec40c6edf244f2f5c28a4962aad96685059d2f1. 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/USHM92290857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6ac6815e63769bd193f8d0240f1752a8f924dfd35cf11998e529e5bf9e725ff. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM92290859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x963bbae25d76e6b524a9f82537f77ea02feb5e9beb46136e3aea574409a79e59. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM92290860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25811c6cca7b3e65eeb33ef60d0f4024ebea5c7213bec79374dc4b87a03c9be. 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/USHM92290861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e32e7a46988101020c3e59648e1052f68ab3015f4cc3ed89344e7423907a5c3. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USHM92290862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d60730db81a56f14db39b420a127c146009266616bdcc3d7fc2b0bc89fecbc9. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/USL4Q2003728.