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 0x30e2952eb6099ef9d087a2d6838b2dc51e2beaf5e54aa2c76997d449a86191c0. 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/5169bdaf-28fb-44f4-b321-5c1d30ce424d.json and https://artists.proofprofile.net/proofs/artist/5169bdaf-28fb-44f4-b321-5c1d30ce424d.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 0xffe6e7d558ea9a48de8be52787ab429192bca9967d9ae90980d667728c4cd152. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/QZES61922194.
Interspheres >< Atmospheres (Deluxe Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e08d5e255b6a2fa9a1b320d60dc581a69575cc7c1959cc5fcb6df8b1a527f5a. 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/DEA451109030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x637f2faf1e3111ca649ee9c964401c31b7781c76c097011b7407c4062c54d6b6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:27:18Z), 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/DEA451109520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294b381f27486acd96e961c418f22b955292bdd69255520563795bbf98d05916. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:31:30Z), 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/DEA451317350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0843519eb61899b45d518fadebb10a01603342d0411817693cf3e71685ee2e. 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/DEA451317360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23ed35db9a1efc01a79c6b8d993bced881d4870e91eda72336778a5dead68df. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/DEA451317370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aa5563354a91f6d292e41fceccbcc82d868b19e293b6e2006c861e26ea52488. Chain 2 (Bitcoin): anchored in block 958417 (2026-07-17T12:56:50Z), 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/DEA451317380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a55497a09900cfd9f1d14fbf1e5e33fc3edd874923a8c099932ff2bf493d64. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:12Z), 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/DEA451805330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5b4401b9d6eebe1c1125ee26a18b2445dacd477b2a96fda1d6883a9165f4405. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEA451805340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0526852164c8db536d09cebb85c642b27f58856d5ca754448032e05ac0b2f16. 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/DEA451805190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6069cdf8efaad5f539fd60b1f4049d286b4e4986ddbee1408b717c286504ebfa. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/DEA451805350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19d9e7a11519c0502d272952f9aa6f5a158d0b7febed49262b82da94fb005b96. 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/DEA451805360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5956448f04245faafaae03f16d4392efdf9ba4c0546af470ac693ec4ab1dfadc. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:35:34Z), 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/DEA451805370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68311efd4078902f4295fad739452f1d0473bc1849a1f4f59102fbf3ce720ea8. 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/DEA451805380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d14d182dce394b6616c4362607472ba87a4afbc94d5ac20ea52864298e97d88. 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/DEA451805390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4723d6f631b479b666ae573e2df062e4daa310a53d28e57b57a90f10b2823a64. 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/DEA451805400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe972e2a70deaad9321cbb90181f34d1a4088677da65f6fcdfb3e9c36890583cc. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/DERK42200179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac94bb9e6a8b684f44a73f2c12b40b7d0b97ed799401f04d8bfac3a86c952106. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:51:12Z), 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/DERK42200185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a13503c4f8162863bd4147bc5f354fe26ef303f018bb86b765ad527fb126ff2. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:58:51Z), 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/DERK42200184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caccbf642484f7cf861b201cabd5a5daf668c3496812b86852573dea42e128a. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:31:14Z), 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/DERK42200186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bdc9c141384b86588d08fa6937d2a6f1467fd1c81faae03139d4c8b6d729699. 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/DERK42300154.