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 0x1eff280d24818e2fce1eb897358b518a2945ae5dd9f235b9949183dc51d892a8. 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/e10bbf38-43d4-41bf-b319-24643f84f2de.json and https://artists.proofprofile.net/proofs/artist/e10bbf38-43d4-41bf-b319-24643f84f2de.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 0x5e06254d58e48216bdeeeffebc89aa3ce7d8531fed9839a00ff43452fbc876ca. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/GBKQU1382998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd809266bc8c29edf1544ea61cadd44d83c4a0afea50104b5935c597468d9c500. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/GBKQU1382999.
Surrounded (Code Pandorum Remix) [Electrostep Network]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8228695580bdf9a147e70672b1904d71173d58d2d29abacb882f637f654241. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USYBL1500979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4b0826d81f9b6b4cbade5994581eb87917388639bfad32391743be4d95d7e0. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/GBKQU1627103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f808d2f9b51d56f43ccc8dd9305777591fedcd5a880846e360b1661bb2c4b6d. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:00:10Z), 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/GB7YL1711702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01beba98c04e74b8d42d4a2ba504d02af258c4eec7797dd867491e301337abcf. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/GB8KE1854083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39bcd68be30ad44b99d8288269a3117d280f177a9315972942fddf0257194623. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/AUNJX1900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4a1ca956214640c9a78274d7f48d4aeb1b7263235eb5f39e02396494f445e84. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUNJX1900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4242b06369ca29b8011e80963bd3c7706c93c797e9e93e490a39cdae62286f98. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/AUNJX1900017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c7810bf9290d271aa4df0322e3c18b8f14b5ad7a01ffe058df3fd6ddd2d380. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/AUNJX1900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec77f3bd9da58dae4ac05504d849ae82f7ede4223d7449e38124cdb7bd3e9c8. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CA5KR2001772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7284b006dc0f0848573bdcb483facfe0f5b1cd00829a7d1d860af407c2eb56bc. 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/USYBL1500949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb83a8409954e921c45b31b95971243ba4503c4e9e586e15a4c3605b3848b9e. 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/GBKQU1546805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2490fa83f896170b3bbfd102272ac9f21a4fd5d8bac7078fce92811114b747cc. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GB2LD0901779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf668f57d84cd113e510c46e101ba5212fa2124126d4e779ea0a3db095c6dfcdf. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T14:43:56Z), 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/UKFZL1900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4cff01fb062c5bac0c92065c7998070d17e9c1dec2179d79ccef1814f8a49d. 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/GB2LD2320178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2490fa83f896170b3bbfd102272ac9f21a4fd5d8bac7078fce92811114b747cc. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/GB2LD0901779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2490fa83f896170b3bbfd102272ac9f21a4fd5d8bac7078fce92811114b747cc. 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/GB2LD0901779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a8da86579d2de1789f59ddb91680b176e21a127510524e71bd01ae4650de9b. 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/GB7YL1710002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620cf149585d4fdd4e0abb25dcf65e2db3197412ac12f96bd1ad4e3c87e3eb88. 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/GB7YL1710019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x467fd19fe17afd27abce5d3dbc54911454fcfaabbb9c1ad094cc890d15f36f5f. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/USLZJ1457348.
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 0xf7f4354508e9451191dcfa0e1d2d3f6dfeace290bd0321c3ffa2365022920dcf. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/GBLV61606319.