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 0xa98dc8a30337c74a55932f48df3d505533f65a240ad5bab07d38fa0bd001ed67. 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/7d821692-9a2b-485c-aa37-c1405b0c6930.json and https://artists.proofprofile.net/proofs/artist/7d821692-9a2b-485c-aa37-c1405b0c6930.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 0x3cccb6cebf69668461513315b0fdb7561969d021c882f9902de1f32f54e641d5. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:37:55Z), 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/QZDA82357291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x791db5e6417d208ed61ab2f2019d645ed8876b6a485bc9c8f44983e45c5bfee2. 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/QZDA82359284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc198bc85e3f00a9811d99c839bd435a1ab6b19f7d1ec3717b23e7d5aa1eb5c6. 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/QZES52302898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2ab133dbcf63af07b6644da9a129145884c62a13af3b17b90a9f204f6fc0d52. 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/QZES52372629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcb3d54be28e1e617ae7ca9d9f17f113defde52fadfa0235afd68e1e65a8c202. 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/QZES62315776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb746684f914baa67fe3b856980391626db96c158e4de6680513f5c658a7af743. 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/QZES62315786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec16c87c4b954f25706af00e9934a5b5b711d53227cddb19231453d36ade38cd. 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/QZES62315787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdde0a98bc496382459bb8fc38a5465394d86f3fe22fd392cf3788f199e2a2319. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZES62315789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde479b956151d539bacc736c34aafe5270df02222e8fc1a349a5bd515aac8ad6. 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/QZHN52330047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x221025763d384d6fe22d1040d6ef26225d97daf52701fa169cad8f87feaeb4fb. 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/QZMEM2392211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a618dabcf4083121a69ffb8c786312d3df140780afeaed7066211d3cb85b094. 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/QZTAX2391976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f9bd3170ba69874d0ed3988b38a72149e41de6ac7b881f5d96d95c332c80142. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:26:43Z), 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/QZTBA2398378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeb563b62989c7de913e1c4de7d345714c459b1eeec566cdf272ff777fdc503d. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:49:59Z), 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/QZFZ32460233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc875651bf95ae8f810fe5de1f1c62cecbd0b82fb05b185f28230f132c6563f. 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/QZFZ62447357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca51b70a4894c243afcaef5530e77175fd53ed137a2c45f9f99204f12519c93a. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZTAY2431350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c100677cfa1fcdb77cc9ba386d7cd12b7b8782ab433465e42ad9bba9f49c37. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZTBC2424448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d609172071a0a7f7e679548bc29f944e88100450dcd36e6a55cfeaa58ba8756. 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/QZZ7L2468221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0277b52d944e5decfc5817a97d64d2b99b8b6db026f333f4b825c16841b4fc6. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T19:52:24Z), 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/QZDA52578144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0afaa8a6fa40bf8ed832de39b62ddb3efe9012991425482106ebf86e511d61. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/QZDA72527890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112782eaf64761e495c73ff5ee425c81f5951b4a5b6306a932ed3446e5aaad1b. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/QZK6K2515577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3cf0ff096359c8dc94dbb8f8bce3005c11be51df797775d8ab7e8b82ae35e9e. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZPLS2525295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216675750a509515e743a114b9e6a3bb34ece89ddee2a38415698b5987e0e10d. 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/QZPLS2525297.