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 0x6aaced5da53d61a46696224664fda28efb9ef3c9881c020d83c404c9035e91ee. 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/7c5a38e5-489a-4d6d-bb1b-9e138bad9373.json and https://artists.proofprofile.net/proofs/artist/7c5a38e5-489a-4d6d-bb1b-9e138bad9373.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 0x764d55aca0ba150c85c06c01ebbff3f64f77f3024cae6f85eab421371e80c688. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/FRX871593513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f813b8c5686e0a5f1cee2c93d9d6bb5db209038718444357e7232efdd1e35ff. 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/FRX871593514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa26edfc9ebc5e06e40029c00c65eb34acf772e7b5d08a94b488f680030e95df0. 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/FRX871593518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0514c206ee3a6d204c69beb43bb860bf950b4d3bf1f7188cd6fe9f8eacc88a62. 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/FRX871593527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe9b6ea989d6285513534bcf0ab33bfd80248708cdeee1124ccee633be59c83c. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T19:05:07Z), 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/FRX871596994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40b93b42f9a4ffa3520ef066b2ba2ff820fd6af092a3626b7619cb7dd564b505. 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/FRX871596999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7f3611567ac7d173136a710d2fda585fd92b1e4549118633850c45effcd5941. 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/FRX871597003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c6cf4c40ae1ef97260c4e43e93719e58bacee740da14111cac765494a20f43b. 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/FRX871540625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2503a49e243f6b8e2b5d59065ceefcaad5a9a9fbc1776e59b765261d9fee1be1. 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/FRX871540630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42112a3b7cef0279105cc41901818abdf80c2634bf7d3b8c3c0112c9cbaa3305. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FRX871540634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256788c7b419258f221eee8679ca45f96c175d3aed9330d3235332b592c589f9. 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/USHM82068879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4d2cd3ec3a817ec4ad067001ef0e6d4a9a7088dc07797e11120b6d51160a59. 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/USHM82061194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d000b4adeeca4304f2e3e777b597357d8df81f77f4c2766caa2765c2eb29a76. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:28:05Z), 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/FR2X41580123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c2ac205b525ff2e9c08234ee7fe0f9e6bf0ba5b90ae2c845965725167de589. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T02:20:33Z), 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/FR2X41580124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bebd15053cc2129b46ee1d38a71f49748e1412113282cdd8914ac6057ec8a46. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/FR2X41580128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2376af6809f77af301d61f1640dcc8eaa709240bb763fdf49342c85decde23e9. 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/USHM82061193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d9bfeabf229af18e7089b9cf8cba8aaa3ab935630b7c995ed3535f4ca73ae0. 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/GBLFP2523674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91d9f30ba453d140dd022017d887115cd6f41cf990bb7052f3a8e9e7bdc45e6. 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/USHM82068881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a65eb6e02e5193f106df247c82c06b45a37a090002e44f0367e46d4b69908f. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM82068880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5b8eda63630513271991d124605bf9ea6c5c6266bb2ed2a84ce21925dc7840. 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/USHM82068882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a65eb6e02e5193f106df247c82c06b45a37a090002e44f0367e46d4b69908f. 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/USHM82068880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91d9f30ba453d140dd022017d887115cd6f41cf990bb7052f3a8e9e7bdc45e6. 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/USHM82068881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a5b8eda63630513271991d124605bf9ea6c5c6266bb2ed2a84ce21925dc7840. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USHM82068882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2376af6809f77af301d61f1640dcc8eaa709240bb763fdf49342c85decde23e9. 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/USHM82061193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4d2cd3ec3a817ec4ad067001ef0e6d4a9a7088dc07797e11120b6d51160a59. 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/USHM82061194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980898dbe37627bd9e3a51fe0d3cc3b04206b75d449761040a3e5c12c644dec2. 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/USHM82061195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2ba014fd50afb75c9b5384f7e7e6e9c5d15148f9a3f1fa306a8c9f1b2705cb. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/USHM82061197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69ef18c5701cf800fae3dc9c93cb26de754dd23c6643205fa4865dde4895847b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USHM82061205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66047e745e7f331f8d14586139b526161b444be0614f0431145896f98a30a669. 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/USDY42269941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23d6e85f3ec0c01644eec3e68f583d1be6e7d768f3fbc4fe554f1498f538f811. 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/USDY42269942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9960c46861dc0a76a2755c051f0c4d59107912a75e6d3e6f843e80aab02f48cd. 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/USDY42269943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bb56c672937b39f636c42f2ea14a7fc06fba6e09317cc3072d9fbf0fe30dbc8. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY42269944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6f45b84883a06e33a9e2c497ff0f4f04190dcbb5b6ffcb8ff38351496d0b0b. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USDY42269945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe3626e943c0a092f248c3747a11557351f92823e940fb26f00ce093b69c41e. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/USDY42269948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c49ca9264d12c415e12f040001e43816b2826924f072af8efef633e9c34a5c6. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:41:49Z), 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/USL4Q2298903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c49ca9264d12c415e12f040001e43816b2826924f072af8efef633e9c34a5c6. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:51:57Z), 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/USL4Q2298903.