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 0xb786a4c3a38d8885dbcc50789602e48eda8e7c213a3a514f2cc5b268573661a2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34f73853-3e6c-4a26-ad50-4113856cd86d.json and https://artists.proofprofile.net/proofs/artist/34f73853-3e6c-4a26-ad50-4113856cd86d.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 0xec534af92da297646b91f46d25e59ee6e1197910c197fa9a204a170c7b8dfe2a. 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/QM42K1855686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc209da0902833a6f2bc2d712e651a7118bbf22ce46917b7f984dcf2b1984d560. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QM42K1878506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e12b5168532b511d8d1037766ee3c744d04adb77ef8ce18478fb2a6dc9f3065. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QM42K1846042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf8e75d28f75d10bb27821eabf5b691e65652ce65ba2cee7dacce94f0bdc4e8d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QM42K1872194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c11f06a8ad6b7c041ac75ab71697ac5bbe52498b9a98ccc61d18ae43c9d0cf3. 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/QM42K1819629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf45cf4014e3b4c44da2e8a95a44fe80bb744097cbc00dd4ddf1448654cfe1abf. 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/DETO41518999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf0656d9455b9c534e585a5a08f9edeaad6848eca367cd9d4cf3bbc527d8394. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DETO41583581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7581d621e4a3b7a199080755724b02d824e241509f620925a5bdf1a97d2645. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/DETO41550740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc997081ad654b62e38f960efb236236c065b72c8dd3031f5e12dfb5cb77342e. 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/DETO41515560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd43871653d17ac16f0aff583e9e0c05c170f3b57659f42e9a7e67a7a6ae3b87. 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/DETO41898075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d5a0db5227980c065614c9478a5b8f7b1bd9f5f04f6ac36e258ca88fa3625f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DETO41922162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bd6a2f26b2ed7fb97ad8dfcdd5ed3cde3b94d5d114c56c3c9e8b1bf8a2f20b0. 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/DETO41939013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x836a7030a11042357e66ae84cd2a6862905ed12dda9fd4a3551d54be491a4c59. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DETO41915331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x957acb96b83d56ce8d40a2f683d0845de16f9d2f26bdc2189ba8fa9799a8a28d. 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/DETO42137170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40225e61aff8653dd9ff451740409f4f1f6f308aae939cf4eeaa50683972744. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/DETO42146587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b94e03a1d840d5b3f6d58b32dec3205f31388a9d737c1402375e40094a6e21. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DGA062299661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3f9e8b5d75b973a44eb3302a28f5efae5cf3b957cc10f530d438908d7b72f9. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA062299662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1562630653b250e695c248d2223517eb9dc31624ec4d779fcf133692441ed57c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/DGA062299663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae064774c89dab2fc798f327a32dd31edb52b3e574bf93e6f4e3a8e5c4fed52. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:57:26Z), 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/GX7852200247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae064774c89dab2fc798f327a32dd31edb52b3e574bf93e6f4e3a8e5c4fed52. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:54Z), 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/GX7852200247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd530e0d07aabadd85f3de3c52070cd48697da1ef940c533d04cc6e361f689b84. 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/DETO42393171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b784a30204cd5115480778c63a232b52fa804de99394e892744ca5530540b07. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/GX7852200430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ab1aaca26536d80bb050e4372608b9bc6423aa3072913d10467d07afb61f683. Chain 2 (Bitcoin): anchored in block 958668 (2026-07-19T05:16:11Z), 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/QZNFJ2306537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3647c689c09503e738bdd2cfcb9efd83dc8b6b84d79bc8843d10e4f8c6768c7c. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/DETO42330903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4828f12bf04744471a199f8d6573dc621f4a7013ae75975ba71fbad3f447e0. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:35:46Z), 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/DETO42427337.