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 0x379b3b2dd81640b4085d274d9285c8727005aa0c422374a26a93d76f35c38063. 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/26c66750-04e9-4675-af53-3e26796b5d11.json and https://artists.proofprofile.net/proofs/artist/26c66750-04e9-4675-af53-3e26796b5d11.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 0x2e6405c397107d8fb137e4422d7ccaea6c46a0d34f276a6b5c61d2881f6a4156. Chain 2 (Bitcoin): anchored in block 957634 (2026-07-12T00:26:43Z), 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/MX4971402979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05d4d8fca75205afe71f0efa4dc24e5a79b32801c0d2fd1bcaeca5d985d9dc2. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:28:44Z), 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/MX4971511064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40eb951ee0bc7485fa8bb1ec148b6ff745e6811967d6e8bb409a782562c285fb. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:06:57Z), 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/MX4971511065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x087d3a13aa1e36de26c14254b43d9373c176403a9eea587ecbbcbccd8fce6ac5. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/MX4971511066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8c463d81026922ca70a908e8d29f5b24d893caa3aacbf3e7e6fdbd711f77f8e. Chain 2 (Bitcoin): anchored in block 958682 (2026-07-19T06:17:12Z), 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/MX4971511068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589fc3c12a5ad6a714df5f666867cc08411bd8f3dfabc040d7ad44ecc584637b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:30:03Z), 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/MX4971511072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6762e634308e769b17c69e9632f7d44efff5582d1d5edb5fbe143a0c9e8b0bcc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/MX4971511074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edbd8c6df731a48a110a19c24f336f765d8e527351e0406db34c34b7c371d98. 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/USAGX0503010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d95a9a12ebf1110fd0df04dba29404431e9cb83dcba0879dde539cbeaaa6139. 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/QM6DC1528433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf03851a33d755e84f29b2232d0c80b08b297fe167b13d83179642786d3e46e3e. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/CA5KR1832996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550549b4bf0487467e16ce0f7b2bc6d10367b23774de63f6897f788ec8cfca38. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/CA5KR1832997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86565e031921961cdbd90cd3a0a66639130337e6d06bcc8bd2ee4af2f0d4b8e. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/CA5KR1832999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9b320df2845e8ddabf2a7b38768d3341c4cfdadbfba5829f4555350041d6b4. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/CA5KR1833000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958dcfcfb8fce77f49770b7e66fffc5973f45bcf2edf33969ece2c94055cc991. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CA5KR1833001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01b96c7618f5c8c51bf8d03454f0e2d00f44638daf6c18870d2d1629c583234. 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/CA5KR1833002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa47d2457220091b4ece5d8eb32d7eeaf66830431814ae2d60acc178067e143. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CA5KR1833003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37fd3fb6842cbb81001aa38ca817b7532bd0fa843f7d6deaaa23c6aec8ccac5b. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/CA5KR1833598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512cb584211607c2c4d2d23b8e2e4f347ca146a24729c13298eb4e158b7ee360. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/CA5KR1833599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b259940270a57851e8d6d06b18db29ba1558c86ee37fe265402a2fbd5e575b. 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/CA5KR1833601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdab2830d90f89d17d797bd7d4f315f4b04b2a4f7ff1747c64339a93aa423b622. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:30Z), 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/CA5KR1833602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdadb5430080c5300166d9f98fe4eed19329a39dcdf1f10ed2fdf41d32e2c471. Chain 2 (Bitcoin): anchored in block 957642 (2026-07-12T02:46:48Z), 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/CA5KR1833604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2089054904530b8da3375336c7fb763181902f378c3461f6fa7d6516dbb362cc. 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/CA5KR1833606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98756c610f7d8050361cadabc3add3336492d7daa0ac547e3e95d3574d3ba6a7. 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/CA5KR1833607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546ff90aaae19e0c6329181465e6c88848a09dd1b13a34deb4cce8f244a1138a. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/CA5KR1835284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56872caec6f04ee5962f814dca812b71cafa27bd192e1d396f38a7c3e21c826c. Chain 2 (Bitcoin): anchored in block 957644 (2026-07-12T03:18:52Z), 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/CA5KR1835285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1618469129da58a2ef14815709dc09364de051d93bb6c0f61e8de1f415c57ac. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/CA5KR1835289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbfae581e3c7e624694db386040e868d26962133af13ff343a93d193f69c292a. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/CA5KR1835290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d519d56be4c757285c84656e34a1e2338faddf6b5e9396d0af1a50f09b956cf. Chain 2 (Bitcoin): anchored in block 957640 (2026-07-12T02:27:45Z), 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/CA5KR1835291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7b56f65d828634f4e7e7775e23dbf0708a7ce47ec685a433f6a43ed3b214d6d. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/CA5KR1835293.