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 0x7950b213ec63a9cba0223c085953e5f50f009e2470472316271d84db4541ece1. 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/832b3f43-2443-4c54-9c2b-5e15848d6aab.json and https://artists.proofprofile.net/proofs/artist/832b3f43-2443-4c54-9c2b-5e15848d6aab.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 0x8f60a5373e68583f061b2d65812a694f9f1c58da64659b3bd4acae9bd0fdf144. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/GBKPL1949853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40461ea2851007bb1ac1ee72e2cf2ff07ab132d0185fa0cc15105c29b8b24cee. 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/GBKPL1961500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a18e24a074bc80259bd1fc9a12b034f494130d686e18d665ca1fb103cda3f39. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T13:22:35Z), 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/GBKPL1967329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707058980b93727c211634c842412decd1fc498d023aa1520902d9885c1a233b. 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/GBKPL1955263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d613ae7049482aa61be0016c8987ec2c6ebfbeb064722955faade1985c6e69c. 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/GBKPL2004392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1542d3dd30ecb02e98276483a5369fb9afeec54efb51ee251d6d84143bf122. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:00:31Z), 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/GBKPL2091908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdea68322aef3356015840c64bbb6a40a874f4d0194fae3889a57e768620d6f6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/GBKPL2033837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdea68322aef3356015840c64bbb6a40a874f4d0194fae3889a57e768620d6f6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/GBKPL2033837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96cee788c2a70bfad169309b7a77bdf504bf8eb839bf3676dc149a3bf0a4509e. 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/GBKPL2138897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a5d0b7c8cc90d5efe32a93c99a26c824ec781278c03420e50631a702e0d4cba. 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/GBKPL2169495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f46c5ba442aedefd1e9995fe1c7eb813e31ceffc410f7d73b11db41b9af24ec. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:45:02Z), 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/GBKPL2170306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ea5d45ab1558b23a498e2f5344c1ba905ae8378e96adfee435f41fdba45837. 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/GBKPL2142742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83da68ab42f811b355ed35421e40110f8ba0427cb9b55fcc4e14fd4b5a50c757. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/GBKPL2153855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a87aa05fab7b7fa8da5e07f144f41868bc1035543b160eb871b4699b8efbe0. 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/GBKPL2170305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d63c825ae622d3cf85530643f201d19859b6ce2098391b70b19a094b733a75d. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/QZTGW2402611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c843d60f0d966765d11b9eb7fbae1d9c6adc50e5c41f961dbbe27bee8f3600. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZTGW2403586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8a2a203b75243da0587f63abd65b51d1575e1db8fa52ca4f5dcac142a80ede3. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/QZTGW2403907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf83a558d4bc308215bb09b7f06e0afcdcae0c591d01ce84c71f2816bca44f01. 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/QZTGW2404373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6435670f2c7f322a4b4235572a1b58c6b2f38626e5fde139fab5f743196c4b2e. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:28:27Z), 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/QZTGW2404377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc06b8559f01905c893bb27c304d836f279b7104417b79b589603c640b72ff09. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QZTGW2404378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9347020ef8bff0f86bd0bce5364e28bc20b223e1ee58fc8fc2efb27ae84a1a6a. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/QZTGW2406769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ec4bad7dcc68503e69c3e4108126b670f11822300912b73c68041360c14b3b. 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/CAN112100786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6205e2cf39d0503bd684d7da38921c992a8f3f3d8d00fb465ae58473892041a2. 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/USZXT2350912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ec4bad7dcc68503e69c3e4108126b670f11822300912b73c68041360c14b3b. 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/CAN112100786.