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 0x542282a60dd6a623d7f14b0ba7f023d1c9607b5d7e57c776aabb84cbd8bbca1b. 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/2500bdbf-e6f6-414d-8062-164453893a6c.json and https://artists.proofprofile.net/proofs/artist/2500bdbf-e6f6-414d-8062-164453893a6c.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 0xecd7e310f9407500051825f5699927284087cc865abb3c27a676216d7201722c. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:22:45Z), 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/TCAHP2394408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3398fbd3d2be97c46d911131cd6b88b8c02c1451925defb50ba47746e01f44. 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/TCAHS2343765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f762f4669250bcbe929092f605095c918a72b98124b359660e82ef9b94ff3d2. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAHT2333331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2276438a07d004c42d35e6bc4947178f003c283f1dfd5bc6dcdefe6a978f5576. 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/TCAHU2438903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6486d1cc4589485aa97f2b8c7c6e36195300f31f3872ee6e226d8d3182f9f18b. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/TCAHT2492055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96704bc60e9e14ee627797fb2bd7f34ce63b6e8fdbacb7de336b808ce499c51b. 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/TCAHT2492070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a4159ec861d530ecd63b23a2b259acd6f637da4ef1c43f5baeebd412b346d87. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCAHT2492074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e818ed6dc9847ac3c3226978f2f3ffd5faa61ddece711e9b7b8eeb62e0d0b1. 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/TCAHT2492114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa919e2a4c345472381309acf428b529be66f31f828dc0369c520a15d345bc4db. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/TCAHT2492132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eba1c5f5ec4ad948d408733b7cf87b17129696af1d17f7ff33e054a8a0edfc0. 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/TCAHT2492134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc09695f9589a1334cf85b5d9db9e255945c01c17dcb87001e0d683dbfff91ce4. 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/TCAHT2492136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2587f9c51de6c7a3cce58b930f5f81d36ec1ee2ef8615974bd3288701f4015bb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAHY2469057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000b99b1846db6c59ee6ab1cffee4bae8dec6eeb4aa2cbb660fb70148b9838ee. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/TCAHZ2464032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a1dcec2910abbd7c7fb479de3406799647343f8a95452b41583d31c10b007d4. 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/TCAIA2491767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885961ec533ff4087e6635b5eafc1db0d9c58e3eafc819acb80198b2fc6a8fc2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIC2477780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8699cb166c7137dfecfb3e192d7793bff680212cf50ed9ee4a48e05bce1d888b. 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/TCAIG2404698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc229a763b83939858287e0576ece1fbff7900cef521a832150b9ea16efa2926a. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TCAIF2461679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x958461a844289883265087cc1b0d7d67a6e9254cdac232cd40f5fb1b34334a9a. 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/TCAIF2461730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d66915efc9ad3eac524012d4d6b52a9fe115565036e9551952dae76c81cee0c. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:18:04Z), 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/TCAIL2411830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178b771ab858317aabc188faaaccb52a2ebc8108481b817fa5127621438b4ce4. 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/TCAIL2436150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefca6dccd0c7e304ea10e419741d2117d304a21ddc594cc3a1b5e9333f9ac344. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/TCAIS2455213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fe6f5e35ab844ea60866b110f10bfc91a48d3b24e3fb3996ec95ac68cc2ced6. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAIX2445428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027085b5f82cf016d5024e84b1cc0366e6f946c0c339f3c77189a929c9538d6a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9W12434918.