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 0x66594929b817ae8fdb1ec5cb3cff95e2ad422c339c0653f61567a89a1aeda503. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8f82fd86-a5a5-4171-9788-68e2c3057273.json and https://artists.proofprofile.net/proofs/artist/8f82fd86-a5a5-4171-9788-68e2c3057273.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 0x8f5cf1ddd541d3a8d4e5f7aca2670620a90e1fc0b6b907a17cc68751899a86b7. 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/USHM22356878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44852e12e24240c23167b82ed3f47f5460ea68f9489f33e83b1b383d449bca46. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/USMH92351920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7603dc47fa8a41c100f19f96b9acb2465261ac0431608e18dfcfee9d5930307. 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/USMH92351922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3386e0f1ba9405037596ce58cd8d1becc2e2c826cdf937a377da16c0c4108d5. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:25:56Z), 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/USMH92351923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5de8b932bd124c35d93ea4d2c047a07cefbe2e3a5c4088ab6126c6126d274500. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/USMH92351924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289ef75852f9f111094e44f3d2bb8654995ec3955507a372e711c602412f509a. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T00:20:02Z), 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/USMH92351925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc220cbc44537059b6f71df856f9a25c8bd13a9d012450b2fdba506ebd2b3d0c3. 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/USMH92351926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacea1d77d2ab9f12aa9d622d29063b9ce38ca9046a47628dd90ff2aedcc7442e. 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/USMH92351927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590c0b1f71f92704372fd055729379db5ddf1a080cc5e409282f4c1fdf073fdc. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:43:56Z), 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/USMH92351929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326be1760c0e69ce7d53f010747c8cae4c302b02dda27f371d23c6190456a01c. 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/USMH92351930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5596f43a2ebd46b62e8949cb97a6f2ec6dc5a8ced25de23f7d6d23e23c9cd220. 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/USMH92351931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7839168c5dfb0c8695d355ecef8336caf0858e272c767b10732185968677b903. 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/USMH92351932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0885d3a91c43d2cc2a385d00f38d106ebe481ed052cc9d20d2dd82fde5d11d83. 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/USMH92351936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004ef8bd63fa187799fb8586af075dec33818b862e5eda8c70e8c5df5bbaa3ec. 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/USMH92351937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63a39274014a87468383f2b2c16228a17864caf5e8be9be76dd481e7d5813450. 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/USMH92351938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368473653fcb0b1f3bfdfccfe0b0968f5656092c41f1a18e2ed46fd7372d62bf. 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/USMH92351939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x374ffbb9dab5eda9d4bfc38ef82086e5ae487f714eaa23312f2015c1bbdced36. Chain 2 (Bitcoin): anchored in block 958947 (2026-07-21T03:40:56Z), 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/USMH92351941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c908b2b5f773062ceb942f40d5c5e228b2157dec03c2db51f75fa0fbbe82e3f. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USMH92351943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538ec6720da7873bcec3342e97215c355cbab30cd890ce39e64216d589a30533. 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/USMH92351945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf8bbd8e838b652e5d7f6967b46d75424a68ac9d0e3684912b9d25deafdacdf. 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/USMH92351947.