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 0x2716a2896583fa607bfe4b231b6ec058d8fa519cb5305821977a741a37451669. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30c02117-f83f-4647-b682-d3029e532792.json and https://artists.proofprofile.net/proofs/artist/30c02117-f83f-4647-b682-d3029e532792.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 0x16f0849b4c812904bb5bcfb21cf66b39efa54a1039034e40edbe84b40894b2c1. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZFZ41915691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5537ffc1967ed972e79b72cf519309592ede4d44bda12b2ed9119e6ac5f7aedb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZHNB1930314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b857974f8959859355f7ad3cf30ad476bed1c193bb1a398a72ceca87ba90090. 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/QZFZ62098880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d5b6f74a2f7206e473f1627a4b12c7047f52b795df8f4cd61017e9b1bc760d. 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/QZHN82018458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce380d3111a156c239419095697b9cb9eb0568675e93d3a42df44ce18625af0a. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZMEQ2077630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691e9adacd4aaa927e8c24c8fdf8cb88172171a9ea1f3f1c7288f851fb624b67. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:49:20Z), 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/QZFZ52192356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f7142a94ec3ae3cc8506ac7babef997a9919a3b7c575b1c2e417bc61aa6a072. 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/QZDA62150166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4ec82909f70e89beb198ad7ecb7a7e806436aa4f540c34a3b2d054931ea606. 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/QZK6J2186313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d544d75d33da0cff025d26fb01037248f6bf8df95abe148d6b6107d3ba562e2. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZNWQ2180549.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb7f7949c07c460ab78dbdc9fb865574a99bfaed91763d0906254c55a2fc0994. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:33:46Z), 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/QZFZ72224078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b17c7a062076280850df43f1df61d18c94f7710a6a08f91231945b50266c22. 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/QZPJ32273162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x058222ade087cc9899a8e5eacc774eb0bce10db6429255415cfce9ad553c83c1. 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/QZPJ32273165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc754f8dc85c25edf0116cf9f533a1557930e8638ae2a30a7991664935dc2ebaf. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/FIL1P2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5148621e896dabfafcec7850ed935ecdafc55dca9df098d98153b094267e2d8. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/FIL1P2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b02583e802af6c571c1e1ef6a3d5fb9562a150ec937c14e694c0edcd5cc3d5d. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:43:45Z), 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/FIL1P2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b02583e802af6c571c1e1ef6a3d5fb9562a150ec937c14e694c0edcd5cc3d5d. 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/FIL1P2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afe596efd54cda20c0be89168361d366ce7dab3b13cd6dcaf3dd441a0ba25ac. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/FIL1P2500012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa0fd1ece1b19020ace43ff5fdb3e66c1c8a648117ae65176cf5750cd3fd8be. Chain 2 (Bitcoin): anchored in block 958496 (2026-07-18T04:43:53Z), 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/FIL1P2500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a422d10766ce7e068b6f93c0d4ee2ae40e8c03d54a8daab3ece2211fb87ea53. 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/FIL1P2500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b02583e802af6c571c1e1ef6a3d5fb9562a150ec937c14e694c0edcd5cc3d5d. 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/FIL1P2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5148621e896dabfafcec7850ed935ecdafc55dca9df098d98153b094267e2d8. Chain 2 (Bitcoin): anchored in block 958889 (2026-07-20T16:03:50Z), 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/FIL1P2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x013f39ccd46bafe4e7fbef9a45e9758578d7c98aa12b5f2ba356aad3cbd22479. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FIL1P2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x617ea4b26ce256aba3b6ddbee159b3bef08d82a2d4c501e0b37bd263cccebb15. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FIL1P2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5afa2451007c9eddee1239d9b41f9f04f0a00796875523915063dad285d6ce3d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FIL1P2500015.