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 0x1457a7cbe3615642317274c67b275568a15e211be06970ae23f3a5ab061f6293. Chain 2 (Bitcoin): anchored in block 953719 (2026-06-15T01:07:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/88d9b829-d76b-42d4-8f49-4d41536adac2.json and https://artists.proofprofile.net/proofs/artist/88d9b829-d76b-42d4-8f49-4d41536adac2.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 0x1dea49fbb840dd3f0eae2a3cbd75a3dd1227674f4c16e50f1f64cefa51958f32. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZES51833238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255ff07f3351ed7b8465c41d6098e0b28bcb5112d72c402601c1e81a24badb49. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZ8LD1980685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3402e8265d97f37d2e3b794235666e173752e537fe18ad93e5ff7d6eb951b1. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZFZ52018961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2187b508333959f8b6e7ff946cb2b24e5a28739765ec1469d4519e23d251dc47. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZES52074755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc5d64f0547a51041c7ca36731b289d5dea77c3ff82ae49ae12f67740b569ee. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/QZES52074757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacd398f3431a39b4a5c833c43afc1f13ebb22dce08127e25e9bc244fd2f2d5bf. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZK6L2005031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3b2aaf0e699e061ebc674ec99e94a342747107ed48b2184b08d565488de3f4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZK6K2514515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d833661dba22f68844ab301ec47b8ac536c86b3c6d82d6bb08b67d35d7d5ed. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6K2514516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1e41d33674f36a88f11047c37b832f54081455f7dc70968f8665d0d17d72c1. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:40:44Z), 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/QZK6K2514517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaab4527468626001acd233228cf6cbc0b99d1cc978831c6c9b85203865f457b. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:28:26Z), 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/QZK6K2514518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141b3108aef2c2b2d6bed76a0eebbec0ff93a18f49cfcd926f5f0f42ee939478. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZK6K2514519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0260f60d8f58357c26b1840d9f794593ed9427c535d8cb6234b70c7eb6d0268. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:21:51Z), 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/QZK6K2514520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x018bb39d63c5ce131201cc701d4beb176ea30f9bc8e2c8b6bcfcbc591ca78462. 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/QZK6K2514521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0e67c9bc574460acfa4b072e2ee5b63bcb4e1656ab38503156ac90caea58ae. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZK6K2514522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99210fd0efca9a738730166ef91f6882abd871b3ef3113f92faaa52715aee6fb. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZK6K2514523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd44b26f66cfd23aab173ddc4e758342eb51d9acb4fc5e9c6fcfb4aa5758c2d06. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZK6K2514524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62379fa4d7538dcd273929a36a5c62b0d7b69ef7a8d481baad3c08a1117398a. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZK6K2514525.