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 0x034c313a6bdb74db99cc9360f37c0a1cc83621012e6bd3664ba058330ea02db1. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/515ffd9d-438a-4698-a5b1-4f920ccc5bc0.json and https://artists.proofprofile.net/proofs/artist/515ffd9d-438a-4698-a5b1-4f920ccc5bc0.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 0x088146907077b08336b6283e8f562fd4f564b158737d2c2dcc8d3f5be4c9dfdd. 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/US3DF1801666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6041809cd239e34a7ae81a3af6e6062df0d180feb8a8ebc6ac6e3e8ceb97fcfd. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US3DF1801670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088146907077b08336b6283e8f562fd4f564b158737d2c2dcc8d3f5be4c9dfdd. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/US3DF1801666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b52d2151b159ec2c0ee4c9eeb298eb584d06e3f9746d0ecc1731b7526da1ac4. 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/US3DF1801667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6041809cd239e34a7ae81a3af6e6062df0d180feb8a8ebc6ac6e3e8ceb97fcfd. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US3DF1801670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021a4b59ad2e3cd2bb6dcb988664db09b040f436fe449ac942a00a1791d6c7a6. 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/TCAEF1954628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021a4b59ad2e3cd2bb6dcb988664db09b040f436fe449ac942a00a1791d6c7a6. 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/TCAEF1954628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff640c8e050cae20e846121085b77a480662b5e858e08d121357da27d1927a77. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:55:12Z), 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/TCAEF1976407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff640c8e050cae20e846121085b77a480662b5e858e08d121357da27d1927a77. 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/TCAEF1976407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1920bcc237a681528d4e1a692e4dc9e2be2794f0488d7d797bef6186e183baa5. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/TRBSL2000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a30eaef3663dbb60e525184580c418b7b9b4f7f250144aeac35e9675f4cd19e. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:29:36Z), 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/TRBSL2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc74c64fe2a631e848bacb009d6524632efe16840197b1b6c1d34ec73cc0c2e. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TRBSL2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86ac708fbe099b20d130e800bb218cbf3afd3e4e7ca68fa5409ea5a826684060. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/TRBSL2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77856a06cc6b68cfb7cbc5bef2df5ec83ae03582ccf437ae79ccdf75165f8e41. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX452281173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77856a06cc6b68cfb7cbc5bef2df5ec83ae03582ccf437ae79ccdf75165f8e41. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/FRX452281173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ef11c23ca04bc9b2e58fdd2e173e3654f006b689c3be1efa43008261e187d96. 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/FR2X42320616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fada628f9aa23d94294d120756567f4a548ab5ccb395bc804a3d42d624cc26a. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/FR2X42320617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd838a1ce66987c699197bcc7c31475a652ae29384e7e5b430227f40e5250a1de. Chain 2 (Bitcoin): anchored in block 957965 (2026-07-14T07:07:52Z), 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/FR2X42320621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5a130e389687d436a91971fe78b426abccd4bacb3073d1bcfb077cf2e6af0c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/FR2X42320627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fada628f9aa23d94294d120756567f4a548ab5ccb395bc804a3d42d624cc26a. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T08:14:15Z), 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/FR2X42320617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd838a1ce66987c699197bcc7c31475a652ae29384e7e5b430227f40e5250a1de. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/FR2X42320621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa856be7f10d4d99127c2ba14aa102120a8369e5e8aee7a335f92c3a9b85b39fa. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-16T00:11:54Z), 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/FR2X42320626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5a130e389687d436a91971fe78b426abccd4bacb3073d1bcfb077cf2e6af0c. 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/FR2X42320627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002aa92236d22d8105aa1a1421d18941738e37e554d723ff862caa045f821112. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:47:31Z), 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/DGA082309629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06cbc40727f42161d71f711d5231fb6034b15817ec3e6f0cd13a4a5447a9e4f. Chain 2 (Bitcoin): anchored in block 957569 (2026-07-11T12:44:25Z), 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/FRX202447674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5c34ec07ba31d7f6366f6ab453a62d9fe4904ac312fd3fa9700b1dedb4d01a. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FRX282420376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf06cbc40727f42161d71f711d5231fb6034b15817ec3e6f0cd13a4a5447a9e4f. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:25:32Z), 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/FRX202447674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5c34ec07ba31d7f6366f6ab453a62d9fe4904ac312fd3fa9700b1dedb4d01a. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/FRX282420376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9d5d2b43c0a58a4d3446d5b1c5c3702f9c843a222ad0e1eca85bff71813324a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR96X2472768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e121bdb4ca77f93de0c67ef00751271c6ce808493ab4f4020d2e25241fe84b3. 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/DGA052482369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53d14de983bb1182386e130a4d277e8800a362fae2f37f4511e603d7db71580b. 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/DGA0M2476542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48182cd30b5b043b1e654ef1b4aea4a9da8be2fd3454fa2e501384883e30c22d. 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/DGA0P2428111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48182cd30b5b043b1e654ef1b4aea4a9da8be2fd3454fa2e501384883e30c22d. 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/DGA0P2428111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe675529c7e769ec2517849382fa3311f5eacf5132d4e58390bc9a1dbd853b4b1. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/DGA0P2428112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd8dfa01c2c905dfe7860ae5376975b89f309b10b8ebabd4c8cc72a468d30e6. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T09:57:41Z), 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/DGA0P2428114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd81f5688c486428cc9c69ff6adef0873f45f4af1274e402d191d75fc8ef92cc. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QZWFH2506253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e3f3e0c0a40f72d19627f665875be27ffcf72bbe448e2b00ef7328ae57e5431. 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/QT3F92587697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x808b0dfc13c606e1731105952d92d20af0dcf2a3976120b51b4c1ac0f54746ac. 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/QZTBA2460350.