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 0x5c422b10b2c0ff26ee49428c64653c6564992ebe9c959f0a89d29f13492d4c91. Chain 2 (Bitcoin): anchored in block 953707 (2026-06-14T23:22:21Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7c52f922-88a3-49a3-aaa2-0a73599fc340.json and https://artists.proofprofile.net/proofs/artist/7c52f922-88a3-49a3-aaa2-0a73599fc340.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 0x5c06de8dbd04e8c128f1d06b67de375332a861f4b8a0cc527bccb47d00355b9c. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QZWFS2598015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b52ec837244d6b4b1aadd75f97f2593671d0afbe82394b4a2b026dbb9151283. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFS2598016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x356a5788813d5ee363125d29bcddad4bd16b616d3fe84d74f7e073df7347338a. 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/QZWFS2598017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaa475b6318ff67d72f7b6dcb943a54ff6fcb61a0d3cf69709d968238e3847fe. 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/QZWFS2598018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf690b9f958d43a1fabb6c51d3ea26f6e13701dce7ba0a27be3dd7e5818adea2c. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZWFS2598019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd477ef2b9bfa6b0f835a147fa6b3ac1c68309c43e1e70ec39019de54f6d0757e. 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/QZWFS2598020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba5e5230eb80037f6515d5e7c2f821eed7f02bbf749613f73d088cd807a9e60. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZWFS2598021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94da7be74eb46554f45c17bb6fddb01a60c44cec5740a16accfb06e61979845. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/QZWFS2598022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d05d0d459619545bce2c25701b1d342d8cfb97d8359a319a43fd78acaf1ebc0. 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/QZWFS2598023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5f483824712151c864a4935a4daf3c672a3dbc921c853be81c0498bb1a47af. 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/QZWFS2598024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f8cea31365dbee2f77c5d89a12f110808b00350f74326f27abe06cf08866e40. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZWFS2598025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06d28ca3d8451068486dec66d705f64500bde26012781493e6bf28fc86cf5e74. 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/QZWFS2598026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838349a1f0c6d61eff4cab26574a391831447cf408aa09a276c3d18f00b9d209. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZWFS2598027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a067a28ff6e890d7f361847295e932273e36640749c4394587e777258912a7e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWFS2598028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15d3adbc736f0029e02571bfd966c582dc5dd332387bf056af80ea3bdff5b464. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZWFS2598029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98089592fe5d5a80d44deb7111b38dfeaa7c22f7d92167acc403bd824e43de2. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZWFS2598030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x533fb6287034d3b93166feb5754c9e5977ea1eac071493d2364df3e5a22976d6. 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/QZWFS2598031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6d8ee5aefbfd0f953fc9d8ee9593084055f3f9f0ab27925060fe5001860ab6d. 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/QZWFS2598032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e70c2219527f7b304fa25c3b831e06b961935ad7be6a478ab69628226b687cc. 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/QZWFS2598033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ec73504a4278fb41d46b7c36b6fef2f0be97be4bf820c4677dc8efd1edfca0. 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/QZWFS2598034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9199a7d6bf1601e4403090ca90b23762a42aecaa2ddf3524b415bf2a9eae6423. 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/GXHAF2587665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1456cfc2b9f2a74e3e724f7bb85f609b5f86bcc6eee2e888f873393db2aac7c. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/GXHAF2587666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649a79f0376e49a8d352e19106c89dda05c077afd2c6681fdfbb1da607140818. 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/GXHAF2587667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b5e7ff498d27bd1e6275a7629849768fc4bdc2e175e39dd7f05419999e09a4. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GXHAF2587668.