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 0x38c8859271f672102f8d12b94a8b5f06f5205ce496b9cc64e53cd222c7acb3c6. 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/0c3d6241-40a4-4f48-9fd0-663418f90f13.json and https://artists.proofprofile.net/proofs/artist/0c3d6241-40a4-4f48-9fd0-663418f90f13.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 0x71d5b8b0363ba45d6d94b85b1f3009215ef00f3c71f2f14faf8bd7f26174c0e9. Chain 2 (Bitcoin): anchored in block 957767 (2026-07-12T22:25:13Z), 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/TCAJE2578137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce39b8642f91de3cf7514164383bf8ee0d7d23d435de73141c737bb9205c26be. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:46:53Z), 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/TCAJF2525845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x212ce56657fb0086a6a12a679acc878f6a0e151d282d5ee711baf21b7291d10e. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/TCAJF2525907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb124a451f4c7a018c0f65129e09ed4c4aae90e09ff02a54ee3c75894b16955. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:42:25Z), 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/TCAJF2524355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9446d8c6b98a227f978fe1fd6490cb3a44e90f5bdf0ffde7aa63330518443e9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAJF2552185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x990a2817530df36b58c9ae61bef93dbcf9580231daa141652fe3c19d2332a518. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:34:54Z), 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/TCAJF2551942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4635c26f01d416addb5cc1f901f6f28b2497e6d2d24057e5090d82593b427d9. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAJF2551841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33d2f44e63fb62c06f973ec066526a94e5d83ccc08bd83cb7439321cc2b2dcc. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCAJF2551596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2cef0b9ae13ad366aec9ae13fa696ad8decdb2385706a6fb73b944904450b9. 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/TCAJF2552281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf221d3f03bbf4a6b5998280836fb1ce1fd19fcae4003c0d5a1113217e45e0f69. 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/TCAJF2551684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52fed4888cf39948640f25c82a9f4e36b840862dfd1929e988efabfca515efd2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJF2552152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50849365181510338af6391f8d3d6522462478c791c6c030a1fb1e8f1b2414c5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/TCAJG2552211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73799089f0c2950c520668cf844e65008830b24fdee9c63257de5b0853222e79. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T14:02:52Z), 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/TCAJF2552348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ca28cdd562ad2b21e818f5c2fab76e090eb7e4cff1b273366014cd9a71dd84. 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/TCAJF2552059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e6422556cc696f7df2f889ef9e2fe989746ffe683a0f2cb2e92101d2c8dce8. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T21:05:52Z), 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/TCAJF2551900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66c9bf69b882ca1c85d953a8917f071a328729027c30c2488ecab189c2bccc06. 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/TCAJF2552310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cc6a3946d6390016da4f9147ad36224714c75b2b1b8cf3b34dd9bebfa8eec87. 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/TCAJF2552090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x905db499547da481e7eaa1c2d6c18acd97cb691a323a4f65be564cd87d763605. 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/TCAJF2552421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546addec6a04c555d8de94c50ca4bb40aa79fb74fa6d71ef2db53581f79eacc7. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJF2552031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733180355e24546e6389f9190a63161fd385bedc8f108902e21c691de7e7d793. 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/TCAJF2552382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x334d214905512ac538f9606e4d5bd81ff5ba4d9be41e53abcceef9aaca1538dc. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/TCAJF2551768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cfdbe404e6de3d6aaa1e29c213eea319d731205e4a6f8cc5632e9ce3a6edc01. 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/TCAJF2551731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9f873736f36c0633c1108ca04eb1a48442de6a6f47732931f986a5648fa667. 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/TCAJH2551984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371d98c5052a8b32c3d94261583ce7df3356264fabe6889cdcc551a6ee202853. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCAJF2547782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d4744d846f885fc02f8fd259b706904a458fd9baf180137e0c2f51cc932147. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCAJF2552009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adeeeec181841b00dbeefc73b8c46bef976407a00abfea65d2f99c0e9367f54. 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/TCAJF2552112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2db8a06dd00b73054e0a056214e33ca27efaa9b455a3efd3028b4e0fa3c6ffd1. 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/TCAJF2551864.