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 0x99b6bd78228cb35d1ae30fc70568bb49ee5fe86975d7180755b2459a3fed454a. 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/5a766d02-f2db-4e27-8af5-5833a7f31375.json and https://artists.proofprofile.net/proofs/artist/5a766d02-f2db-4e27-8af5-5833a7f31375.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 0xe12f0251c966d257bcf4d0b5a539b04e121e8e3146bf9d855fa7ea10cd039252. 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/ESA011992585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb95fa36b242139f4c08e95c637c33e0e4f73772f0844bec7119b6f213b5ff575. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ESA011990715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd23dbc5cf81c779d99c9249b820ab35add4f68ba6a711699fe137974b218fa69. 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/ESA011990716.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f724a1d571bc60e02a2d3c0de53eb8013948b69dc3488f17cc3faaf26602655. 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/ESA011990696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d7117b2a5c4a04e118dbc9240d4b6ea683b6fec2a0a49fb36dc3820540ca075. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/ESA011601359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e0383135f92fce5f2fbbed967fd34dd48f16a05c7753ecb36418c91f30f9a89. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA011601360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1ed739c917bc841de5f9c5deaaa72d1637e255237e2033a0234864c1584f119. 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/ESA011601362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31c51ba38096dfc563a6c5c6fca6ec10857c39eba0f624db1d45216d05f313b1. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA011601363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50192c49f728c51c70065d792fce223ee8d4ecc39165b0bcde71f112bc8ffeb6. 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/ESA092207122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65882c811f910b033b97be68fbbf96408e8b7d07e1c4daea3061d2194e5f7ecd. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:54:42Z), 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/ESA092207123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe97090fd2331be16880f4dce3c3bfeec3f525768ee055db37df4e02d1211ffa4. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/ESA092207124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c6fb56407acc210a1d003d430f4f6ce485482661d9c21db024f78d1d0f0375. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ESA092207125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x126045839adbeb535414c2505a02a7e8ebae11a8112ce53a8de1b4f3ae9d4aff. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ESA092207128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90007ad344785f30d950759b512f8b951d85ab8fd08dacf4c53e4302a80b8270. 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/ESA092335179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53113e431e9ddac10bf7c7c43bdcd387ed199d3a5585aafead74acc63c147db2. 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/QZWFH2482019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d100c788dec9e1e310c840cb61ef5b1994ac6bf92180fa64f8fee7045007fad. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T04:34:51Z), 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/QZWFE2453202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c899d6809e12c0318bb32c3787793b047dcf6f2f109ccf21bb3e9823dfee0f7. 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/QZWFH2482020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a4ad2f0a4ed9c587f319ebd76d3b20147134c62dcae6a00e0dbd0f5085b098f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:50:56Z), 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/QZWFH2482022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d101f5a159b24c2cd0b199ee37e4f7fa98a6a00a92745e02182306c7b661a4. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/QZWFH2482024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3e869ca8fc9f980caab2d5a4096426b102fcf1eed0e9385f9fe0ab942b58700. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZWFH2482025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d836c3f07546068d2242f52aeef33de36e69cbb7dda9b5d2b9a2dc440c37b0. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZWFH2482026.