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 0xb6576f68a4c7b2d4a0134bab4c6c128ea2a6ddddab2c9df163438928b3ac2c7f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/08dd07be-b5c8-450a-ac53-207e0bb1c7f9.json and https://artists.proofprofile.net/proofs/artist/08dd07be-b5c8-450a-ac53-207e0bb1c7f9.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 0xb3ffe55c87a45e49dd2e59be667f238b18bfe6f1a7cedd2f7e98d3a89dba619a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZZ8B2439440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93498873fe4f4d10c600b1859271f442ac100f47e4b309b7628fce6fe364b1b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZWV32418236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0898d719f3bb4b35e150e35e70601e44f02176967d751fd30dcf8b9b562dde8e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWV32418240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf980bac41eb91c276079c815d56d6d78d5b5e3b65d28e357809b31803702856d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWV32418267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0d3432392a131bc2e38ad02604db1a76e9d0fc824cd59c79d4a2e9009dda75e. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWV32418272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec4383cbf150c967c7bb9544a13c6f53070a398020dba51b770509f4e745c69d. 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/QZWV32418386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee03d7333d4ea26ed9779074829e82821330b5be29cc894e443297ef406fa53. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWDE2435126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fa0b45e5aea690cdeb30e254058fa796c5bc630a9d80768502f7e02d286442a. 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/QZWV32441063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0cb9869bd0ec6c9c7e9e72f95d7e987381e4c15f10e9136653b3d8a9f63775d. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWV32418443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x354dc08d72390d1796f89d39379beabea0d97e5209ddb968145812430ca30faf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZWV32418557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dc792ec625244ed12a74c8d4c11872493ef0d05075398b4cf748dcb282b9744. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ51950511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf595f2c088f5f3d2c59795eff6a510e3c5f216689692541d233a08ce80969e0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ51950512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ddb5db81365ae9d8ac9d5f72125748538244d79f4883986a8cbd0a711abd337. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ51950513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x767bc99e088fa89a2abbdcec5ecbf64f33085fab768fc74656cc2ce8c5bb8146. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ51950514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf75cc4eb2f1ddb4c95c76b37607a3bda00dcd713eeb4b7a0a5d38c40667cca4. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ51950515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fcf5f929d6702cd87e19151a2fb2edb7f9283c7fbf10eed052d0f56b47c271. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZHZ51950516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88616436176c3213da871248c376bbbe4af4a1e2d132599d3f57a684f9d34049. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZHZ51950517.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadfbcc91a1712fad94c81c86de8058bfb0e16d47bac1b2f4c22936f5ff267b5e. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BC8182500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be4223d678a8820fcc86334da5697ee1eb2041ed989f465b3af91acff498b4b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/USLZJ2592993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a0f2c5898738d8ae65b3621ebffc6dadd766aac4dc73992b757c38678dd0232. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBRKQ2572609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423f8a79de74ac3206fe74682d2ab61efa4f21f516ddd0e36788727c731358fd. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZ5FN2579776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc28c8a057dda962ddc411fd1ac01666c3eb215f9c8703bdfcbe76be8b17538. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BCNWM2400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfc9c82ab1f7ece2bd6116aa50e2246af0d0b8d33c9b271158d35e43b4668d03. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5FN2549115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9168eaf1518c8b3f6e027313173c3b2473fb7b8128ecf2ada0d348c4670b47a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZ5FN2529149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9603a010fbdcace0c103c1996e7adda20eb16b034f58d78b490e466c6459faf. 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/QZZEB2450664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x054703ed5151d630ed706352f25c651e237370f36d6daa9e045bf0f380bf14a9. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BX4IU2421365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe159aec1635a6e2e1d99a1af5ef2610158d26f59539689cf3d04f0b3c81c949c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZEB2450623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e9a34610342b0847e9eca7628f79841084bee2f1b297809ffa8e6775be7c2. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ8A2493331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x362d4bd06e53e797b8dc2a07b7b9e3cccc024372746ac514ac99c5bae237d87f. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZZ8A2430279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd664ad8ca3502e45daf4c29644d4a1422d3dd2aa23c0714861c43eed3726b23b. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZTV32331332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47c31d24c0463b888c63ff96ed70d1c0c649e887a98157e43a055f5938adf5fe. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/BXIED2200040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29459598769a3edaa91b156b660dd7dab94b267cff5d978be50dfa03c6a235c6. 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/BXIED2200044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e86a59ebdb7e5561b1a7915056dea65babe3f6d099e95d052313cb6d3e29fba. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/BX4IU2344005.