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 0x52998d8c976897442c0bcbee3b1a12a91351af8a172b5ae7e8193f7c70fc7f88. Chain 2 (Bitcoin): anchored in block 953645 (2026-06-14T14:31:42Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3f720578-1018-4945-b0ed-7e114b419985.json and https://artists.proofprofile.net/proofs/artist/3f720578-1018-4945-b0ed-7e114b419985.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 0xdb186b3ee106c30834de47b231fb2e097bd7fcbfceed4170fcd764d752d00d07. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/JPG102301479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b18530e1e253bce1e526b2340bd03ee0d3a78e2e76c241475e5bb31db308039. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPG102301480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba64e42a21bd02b140ecc5950f8777dae2ac5f41c519d9949bd72d8d7d4371a. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPG102301481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2143e2123110496978b9c309777182010e9706b330eae1f20d2cc8d3b9fe2ddb. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/JPG102301482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01612e5f11e73a9e7028e16f0f7090fcdc11cc0c1358f20bc5f1806f19e3540b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPG102301484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2116babad44db0513bf0751bd145059dfcaf286e044de30daa4f884eb997d6. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPG102301485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcadc3495fb358e7e6c08a12ea388986e8ae9c606b27adb988b2593de5f247a1. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/JPG102301486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7375fff98387d69455899b5d6078987215dbe1bc3d1d7c014a915c03cb84553b. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/JPG102301487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bf34f7210920dfdccb69d0f1f4414d555a1114665d969edc5e397bc503fd6c3. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/JPG102200841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9782e8e16fe3eaebbc88848c90432e9d13e9dcc2594ab0ed948e86147b59ab. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPG102200842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa93637b2412833e042e7f296fd7719a3cf241265d835026ac7cef07be97d9442. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/JPG102200843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a6abdff84b704e2ec156aa8fdc588e6a8f17f543c0d627d31343dcbd583513. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/JPG102200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x633d6d25732eaedd5fc0d92879166cf9659a84fe2094a7a7da80820ca035ab02. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/JPG102200845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48036a0e30da94feb7958db17572681a1333da515f5354daa873c34290dcc950. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/JPG102200611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf37a86f027be8cdab213f01536da7c519f1df52fcb3666410bb411725391f33a. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/JPG102200847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11c2da6304f722c6382730ca9208dce37fc8086d0f687be16da713bbb88ba27. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/JPV501800140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26d311c22990ce3a580d2823f7ace20662153d2db720e07bc7fa892d0bab0a4e. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/JPV501800141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c49a93bb9a409a19b47ffa029d94aef5785390a42b730658f1a4c1b4e46bc1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPV501800143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6595e2c147a4590d3a46ef13c31c13c9f824b33b6f34b9f0b364fe37654477e. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/JPV501800135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7a6abdff84b704e2ec156aa8fdc588e6a8f17f543c0d627d31343dcbd583513. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/JPG102200700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc90aa3d6448e8110a9356b141e41d13363725e735cfcdabb353da9591dc71da5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/JPU202300003.