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 0x57584ab0ac15d41d759a5e10a302ff67a147cd26cc76fe6b13ef39ac11930d7d. 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/04d017df-5cd0-4749-be69-739c1e7cbefd.json and https://artists.proofprofile.net/proofs/artist/04d017df-5cd0-4749-be69-739c1e7cbefd.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 0xd1b61802b089edb1b52fd5678ce52ffc9fe807cf60424dbf6e5fe9369b66cd82. 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/GBKPL2034146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2be611c785330b38961e6c59d0ec0cadca4fd5c6103fe4322f0a34bc69ae2830. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBKPL2202922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa39368552741ee783df8c0b58209494e8b731b3537471b3b808eb64b4cd82018. Chain 2 (Bitcoin): anchored in block 958368 (2026-07-17T05:03:25Z), 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/GBKPL2202932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a89ca675796090313851a69994671574c6031a8cfea72e4fcbf14c8cc16ecc3. 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/GBKPL2202929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82f06e2093b51fa53f67ddc48ff826f846cc848cb0cec692277159aa38574886. 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/GBKPL2202933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22f51bc32077c7fca990a245b54c0cd6a0332022182d5aa435a7a4d171ae3ac. 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/GBKPL2202931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f85a9cc814c64d42452a5d14a0a0815d5b707f741b4c0e26c640d6ec73a862. 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/GBKPL2202924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd917cc635280d75e002e553c976c3043e76ee153fa950c0a8a138da14f808f42. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:49:04Z), 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/GBKPL2200867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3430701721a11de862d184f427faee116858b2a17f17f383625620d11071def1. 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/GBKPL2202928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe76b0f222079b6cd13e5fc7fc369c0b60e3a15dc7a36788f66f6df150b7b04ea. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/GBKPL2202927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb406bcd2f69016f0501ac2b37814445e0653800e154a66e6e10e918b8b3e3d9. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:36:57Z), 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/GBKPL2202923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ce3bda2351793d91cc52dbc798ac4f86660cf1b524a5e60298660e2a0f088f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GBKPL2284292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38e81a9ccc44d68424f348d382eebd16e9401477d0868d1b863b0c9ebacebaf3. 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/GBKPL2020272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391a61c37abbdd41a972c17c7dfe0baef5700cd62be58c2819cd777b9cb397c1. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/GBKPL2172209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd2a6d694569309bf386564207b90b0bd63d5ec7354d896ec5818e77cf7af748. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:11:47Z), 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/GBLFP2300181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639a156f647cabcb7ac53ece99f844be80b7dd01e27a11363e7da45da9932ba3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:44:48Z), 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/GBLFP2300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ca988e5fdf19f679cbc326819b79ec61a0fe464db7f842ceff3c735b1ab235a. 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/GBLFP2300180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01cd831733d21bf83fac4ff8a36f4065acd9adb962ab7584500418923bfd2649. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/GBLFP2300183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bb14a55971eedba0508c369f4790c284ce39ab48cdb44ffe88aa3dbf14eaf2d. 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/GBLFP2300179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95bd65e2df38331eeb783efd85ce8fdb31ffff14244bc639adcac4cbfe74b599. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/GBMA22451819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85f5d1d8e6e96a291267825b0de1bb269da5e30f7912ca67dce308b1b6815947. 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/GBMA22482163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03935000318c0feabfc27495ee7b77e78d8455519866afdc4c79851d4525ab2. 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/GBMA22395176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1155df59174f0fa4619bb20a0d946f0a9b37ffbe9427312375f84beda96ea1d6. 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/GBMA22395177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c675eb2a8f0866ae92cded64b14e3526e58d2ae71be9165e114b694bb1415f. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/GBMA22395178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb34b087222f06e322e998c8f7dbd28f488796fcb87690a443fb72fa10046495. 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/GBMA22395179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22096c5c108efca382136fadd58bb84ec5038d7fe9b2af8128987ea179aa68d9. 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/GBMA22395180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92d92bb19b147814746594d4c2212fa940ba5d21311e5e8d1a5eff2cc9d98259. 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/FR2X42568458.