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 0xdfbc37921f52e698a709fe0701102d42b3980fd14cccbb29fc6103e933bb2ab9. 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/32af3246-a0a9-4358-a82b-1c248b76d1d6.json and https://artists.proofprofile.net/proofs/artist/32af3246-a0a9-4358-a82b-1c248b76d1d6.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 0x53bbefab48a387995c97b83f396eba0bcfc981d4b146ca9d7b05f37fd48244a2. 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/FR10S1572295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03e2ee2470fc7c30f76e7baebfa7138e401855bbb244d2efb04840575df6780a. 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/FR10S1572296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb67913cfbc811e2acbb042882a51288023e5c657a218986c22cb6ad72e131a84. 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/FR10S1572298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304768ed4fa4bca7a2308a47a6e3765f8ffd28680b078dcd1ef14c04169e6651. 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/FR10S1568529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15db14bb5b51d13ae38cd8dc2fc368ef8b2686cdf1625b9879bf00bedc157e7f. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:31:45Z), 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/FR10S1571731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b8769bc793bc68f480eecf2c861835dc77f76d2dbe24d2a4c4776b2ae9e92de. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:22:40Z), 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/FR10S1571734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ce8dd0958ab52da97be497659dc3fc6bb002ada422affb8bbb9ea89f165d44. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/ESA012068579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883d0575810336d677d6d7a1ddde8a48021c69df54a20d48864db092eb9cdbe1. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ESA012068582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0922c6c6634dcbc87408937c3367842f489999199f965857a04497cb17a8f72. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:46:24Z), 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/ESA012068583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44eed2ba300196e5402884f499a08fa95c1119010c85bf9526885d01b1329f8b. 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/FR10S1655708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10fd0aeec63c9433a07649f4235058e5c6e320ca23af5846aaa192545b1e03d. 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/FR10S1655715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea004e7119520c3e369eb19250347a877d6729fe6e5826ead5f590d9bddaaa0. 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/GBLFP2478493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7299dc76700b31abca802c9342dbcac3c88275efdea24e341925465d520def. 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/TCAGJ2208082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eb6f4cf3d025aa92f797095bf93a51cf9d717b1f6c37ea13a9167d55b91018b. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:08:21Z), 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/ESA012068578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260db5203d953b6e21213cafe67391688c59f439203cc21486cb86febbc63d87. 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/ES47E2000307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f34f18ba9b6c43313ced21d7114a81ba4b2c0b946a765d004b015886d82cf86. 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/ES47E2000308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62a2274b76a5c81c3fc58ed2f40957454a88b76c52fcd73918e2c42bacb3e69e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ES47E2000309.