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 0x40e29fbdba6fe100be0511a6644b6eb6247c902f7b55498d775f0a910aa27f4e. 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/2ea21dc7-e4c0-4f9d-8cc3-c4a6c255da03.json and https://artists.proofprofile.net/proofs/artist/2ea21dc7-e4c0-4f9d-8cc3-c4a6c255da03.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 0xf6f619ac2d1b3d3409c86f1383e84d602f737dfbe469f5eee0607d55b64bad7a. 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/USL4R2109491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e1cbc8b5fcbbd29b6ca27b6a961aa258aa99553efd2ad568cece674573e2f5. 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/USL4R2109492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02d72ceb213838c1adf9a23e0600d14ca822f515e4d9979b32afcdb16b93a9e7. 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/USL4R2109495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39642897698142e77eb974a13913af5bc05ced119269acb932caa094fe6befd5. 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/USL4R2109497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db58ada5c39d7012d548727e1a3982ca103b6a8bd90b9ed8c58cf992ad6758e. 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/USCGJ2434672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe067978a7463a9a4c8d05796ca2b50d4877a0b6aea0b6663c7e4d84a4fe8157. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:10:54Z), 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/USCGJ2434689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf96a642043f54248ba5c321137e5db6b58f74c8cb559729beea61daa15e2747. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/USDY42040336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b6a546ca3a1a478978703ff6ed069f384a77e2b9f7fefec49fe70d52336248. 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/USHM22000438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27c2b0f442a803efa0eb594a6f8dd1c6d048de2d206c69d1176513ba461f5da. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/USHM22000440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde9a2a83fe562cbddf8a8bacea7b46e1ef98a8d39ee5e8fae15e8551e61cb6de. 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/USHM22000446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03bf6c5e8edf66576de944945a1cdd2b3d648787f1121eea6bb19918f1ddf944. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/USHM22046164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23a63d3e9c2ce86f4269ce9dcb403acc56054787c2a507a17db4333d030866c2. 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/USHM22046168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02fc7cba74ad82c60b4f9909f218b2881599e940ea6a7d0d056bc19f3b21cafd. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/USHM22046169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b732deb5a0361aa5fcd1f4193957b1fb69f09cd9f20eea7aa37b8b53ed4beed. 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/USHM22046173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97e7aaf81e18963e5f0c7666ef1f08304f3239090173a0a42894107befee2581. 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/USHM92037048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8647d825486d3cd6b90870f10cdeb1a7d245e41698b544d237ef2dfff55d5bc5. 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/USHM92037049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751d103e16b29e57890022817ede3e0a41764796632b462baf0950ee438daa18. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:28:05Z), 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/USHM92037052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a59ae54c10b6abf7c8941301b001828e3c5ffd2c77c8b85ef26c48a4361e22a. 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/USHM92037054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8e7767a16945e7a4a9c45c579f07c83a32dedbb263a58679e005dbeb95e355. 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/USHM92037056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad3060366ac0dac3f6469ceed73fb171d6983497ddf77a82bf54ac551f77cbb9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/USL4Q2099171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab4ea25b6620424ba851cb6fe5b76406bf600538f80498ec850e3e23162c47f. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USL4Q2099175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d05ad7c9e53d555a02df7337f111985feb1fb24849fb398698c122cf1f3e1a5. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/USL4Q2099176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fb0493e89d3441b5f40a164e8e2f3c2e41ff6a36a58cb6a49c1a83d1940865. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:37:47Z), 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/USL4Q2099179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9320faae753e04560beeba4751d0a1011507c32b614ac2e8aabb349eab4c1e75. 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/USL4Q2099181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60a5c05b98c0b116b16e805316f05b8b728d747fc4802d4047014488608e833d. 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/USHM82311802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d1d4555cd53c0090707cb67b921b90bc410f60daf90c7affbfd76b6cb6efcef. 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/USHM82311803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302ec82134590581ee318866cfe90198b10fbe1415a91ec9c452a63abc9ede46. Chain 2 (Bitcoin): anchored in block 956425 (2026-07-17T08:46:57Z), 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/USHM82311804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943cc01fcb8c40a5d4cd4cc4e71706017f001faef61ba6954be8f545aa1478f7. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/USHM82311807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd5e4b2f00dee57b3fb4e79cc81b8c6b45e2be744397ed5bf9d0c0114378215e. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/USHM82311808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58be32a1a9cbf76416c1a2b5a4514cc96e1378585153bde7b5b2a61b840b4d32. 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/USHM82311811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x084dcec6ddb3d91d83a4bbc80db20382923b7c0720aa37dad80820bdbbd4fc1f. 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/USL4Q2430942.