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 0xa4e8487a7955f8e8cfe10270f6e4cd9c5dc3e5a0de463d60aff5db85f0fa126a. 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/f83eb6ba-b3db-4088-bdc8-7153beffaaea.json and https://artists.proofprofile.net/proofs/artist/f83eb6ba-b3db-4088-bdc8-7153beffaaea.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 0xb29f7693698b4d5fb89299d9449eee5c23209f0c46aadcda3b848d7c3600a9a1. 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/QZFYY2298007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x967a4014dd464549c2676345476359b23b3b652abcbefb2fe6e21bd1a483835b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/QZDA62360669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ddc074bf916f5df944dfbed85b158ffefac2af9f05ce289f5e5cef486e2a16. Chain 2 (Bitcoin): anchored in block 957522 (2026-07-11T04:46:56Z), 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/QZTB82360875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf021a5cde6d1fa2279023a1e980af7f1e74bc62272df5b84e51b50b8a8f3c608. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:39:22Z), 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/QZWFR2384857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0fa02be9a715e7f19e6b1557e5839a35eed8e89290721e55797a8307f31d3e0. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:34:32Z), 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/QZHN82491899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa007baef2e59906a9360e7a58eff710996b89794434acd68861d9d29403e870a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:44:17Z), 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/QZMER2471500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01d740583afcfa1e78600796460e6c3f4a16b4a5fd07be3f580dabbe19bab512. 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/QZMER2471501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa536dc1da6a7fdaa35299b13c1389f5f7781b75823828333ade9b208e4533751. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/QZMER2471502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca5ef4a7d9bee5d031679f399e713cae9f05d1680fa747ea6abbb6e1429ab111. 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/QZMER2471504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeee39966554390006f8afeeb0eea61471a146ebedf840855c6b03c6e85850385. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T18:02:09Z), 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/QZMER2471508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ccf6cb515c7922cd8cbc30dba425a39eadf44ddff32f4d998f7ef45ff6ca8b6. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZNWY2437969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3bab96395f4819c59dc0456065e798dda6d4d2613132f7746e1938be528da04. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZWFJ2433333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc18fca67def781ad035b1b9487f7e661c09233878e163f606c4bbbb9de0d1816. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/QZWFN2462747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d9d2dec75352684b77889c369dc751217bd6037b869cba73052ec07fb9fdb92. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:16Z), 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/QZFZ62509875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38c7c9b27fe801cd4d2ab44c29593debf18b2b3dfb8e915459e5a5832805adfc. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:25:52Z), 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/QZK6Q2550556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aab79782c2df862690567a363f5e60e389ab81678009b2dc2b16434316e285. 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/QZNWS2571904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c7961e0c30f02f2770ed344ac8ed68dab3d7e3cc517b5b7b5685e1808ee9c84. 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/QZNWZ2511077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c606cdbf9de21be9cfdb4c8d7f8e1ac029e5a96b1f9fd5094fe63f2e7c6d981. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZTAT2504909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a419e0a2f1ac43abad0b413087ff35c52fe9a09a9b9a2667fc58dd66b45593. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/QZTAY2525880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535d09183d31fc0fd0241fd9f9be5d6ea42a16828ec4e37cb348c9fc5e6822f2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZTAZ2549259.
Pop Music on the Organ, Vol. 2 (Organ Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee714d4b67aeaa568a721e7dd6c94e530c762ab266287947e50bfcfab4c1078. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZWFG2515232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b185a2d5b6a37eabf88e737ca519f5515772922499a5a4c637005e964cfb5e0. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T13:59:32Z), 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/QZWFV2536271.
Can't Help Falling In Love (Organ Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d30b3c3c6a1c1e4dfddea9591053ffeb72d16573ca0fc0dbb5da9391ecaa85. 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/QT3EX2503027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa54e72b77a7fd9ba96ffda1c65fd660a7938526b1532cc1523c2e36cd29a7fab. 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/QT3EX2569596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77af5e244c611c96a0c0c01ca53524baf30085dcaac81f5c3d2813dd76d217e. 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/QT3F62565116.
Adagio in E Flat Major, 'For England Still'
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e246a8cd0686c9f843c9e40bee6d772aee77a4b743fb1a13d4f4356ea8494c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T15:30:12Z), 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/QT3FF2509377.