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 0xe974710b58ccf7982a15a8e7c36fc47437c4a9df764bcdfc92d74427de33cf41. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a712317a-9f3e-4613-a8e2-6ec8363f6d3f.json and https://artists.proofprofile.net/proofs/artist/a712317a-9f3e-4613-a8e2-6ec8363f6d3f.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 0xf7c335d3033b81adb48df56b97e8a51b5ee5819c8d0e65f3227debb1247404b1. 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/BGA471912004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa2503bce62dacd7f2d6ea6a15196efbfcff75fdf2a4e5aa5c510725be7bf58. 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/BGA471912005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe360c43e8584bf8e013af70d9eaa6ff49756911de455301a879e68d9c72cf4bf. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/BGA471912006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e337d6f49f2998dfa2f00696fcc90079ff0e415c2548f1a7ed78bffd7183e1. 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/BGA471912007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3e4088b98d60eb4c0630fa6f0fa1e953e7481766482361bf2ca0d2a520b3e4a. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/BGA471912008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e10345a0df7b8681d618ea09cd627e42d2826a96891afb7023b99c86ff2d66. 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/BGA471912009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9694ac5b4c564bb5f901826c9c6c1743b2ea5d501f441efe3744c177d64948fb. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/BGA471912010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d67b4b3909eb621a78a2046c128cc5da5e95bf7f3f5d92c21532e4c27b06d9a. 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/BGA471912011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c5034e6ce1eb138e3d4ee79d0b4ca50bf101615ee16de774107a3d57cf2101b. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/BGA471912012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71d2f3b075e2cd452127abe686f39c75053eaad32709375d55f03a6ae9dff08. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T19:03:09Z), 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/BGA471912013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7fbe2e77e27e9476e10b12ce22024fb9ad9dddcb3ddeea8295ee2d99deeec92. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:59:49Z), 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/BGA471912014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178f85e8f5c0944468ee8da3e64c4e1785e0aca283b85ba11d072ae7383295c3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BGA471912015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f779844e1c9e459fc559af180f15bb6a3d3fd789cf7c2723865217b52179f8. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:50:31Z), 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/BGA471912016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ed6812862d8b2abe5d3e713859bd2070c9b139ffb315b55a85aa9ca2b564a4. 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/BGA471912017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x830e57ce8175e0c606556e6b554a8ea31615e5e6523ac27e7ba23466aa618717. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:57:51Z), 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/BGA471912018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb5660a19bdf23806db55ebc01327066d9735ea95e8c3354b85fab1554ab510. 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/BGA471912019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6217da40a9122db04bf462b71245609f288f391b012062b8bd32e3f3d036dc4c. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/BGA471912020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe694068c31b3bf6e370e3baface86c46a9096c3e576627ee51f9f3f9f8c165d2. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/BGA471912021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e177d04ef127167be98ce056fe749292b24050089455425e065923387f6cc9. 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/BGA471912022.