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 0xe5572682afd6f5ad1d04783ccfab4c8d82394c7d9de4fc1ab219580ec6675be5. 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/0a603579-1175-4cd3-a5e4-491a85caa43d.json and https://artists.proofprofile.net/proofs/artist/0a603579-1175-4cd3-a5e4-491a85caa43d.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 0x7e143e614f78c2e9b8f7fb4d7ae6e229ba40a1304ce6d6b50a13c87a1c555d82. 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/FR10S2241864.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe251c5de3fd2f3480e08936afc3cff5d8977f7873d566e152e3b73419f927b89. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/FR10S2241867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3fb4f54ce9246c815903b5a6bf6c6a7bdbc8a7f7fd581ed8e2ed51b0b834b2. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:03:20Z), 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/FR10S2241869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x512fc6385256ad6651cc87b6fc71821eaf27d0cdc4d36ede5bee25d5e694a508. 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/FR10S2241870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039e53c3a4131298fb8d54593b1d89054048fb5e0e92d709d3b4222d7f1c9d3c. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/FR10S2241871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb022eedaec9ee87ab1a9c9f43769fe957018c49e626144b4bc71fad02ebaf337. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/FR10S2241873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde4574bb414aa72dd493fd184244c11942254b83b495a5053b041a2fe35bed26. 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/FR10S2241874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3829258759f6ae96507443e3571a5de13c46aac82efb2e852f436c61098c36e9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/FR10S2241875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc049505f263c632b7601c194ddf6b144badd76b89aefab3d9f8ccfd0ed5ad913. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/FR10S2241876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd235a1b2ebbfffcb53e054e8774b55206e3628be677d765ac6b125621e07208. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/FR10S2241877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ac862c861c290b503122a8771fd42637606a2d7357b16dc597d0548131dfc2b. 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/FR10S2244177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95374045df7db88879951ab49a98b6c578a2a45efdd569a6bdf2e9793000bb09. 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/FR10S2244179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58ddd9b25bcf50f5ee30d95c23f7a9490ff6d3834c65e4c66123a1b8e59e3a5d. 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/FR10S2244181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5bac0a8dac225be542ccd31e774bf2ad612715341c6c90b7a9394f63f17b366. 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/FR10S2244182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8339d7ed3c323c25dcb1e3aae0c9c8d2c92dd5cd2f777f196be8c4484c14daf0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/FR10S2244183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02c7c8bbe763d1bee90f1f10b7c66d5a2d5d3a2c14ac4d5fd41facd2b53dd6a. 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/FR10S2244185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d9d5dd6a8a360e55d4e73ffee4d4dfae208b470f306f8544c5a6418b134b3e. 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/FR10S2244186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d4ba0c91f0ab403f977dc90ec7310c1b9776be2144722f11a73889d71757a57. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/FR10S2244189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01667faa8c3003a0211e489a03857a1ee0ea5d5011f5cc4751fd38622a750b53. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/FR10S2244191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9127d19b3859b43fbf2ebf32c37479865cfa809832d33c778f70d52b5935975. 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/DGA062480229.