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 0x3426b5764d613b530213f4a9157470f6fd558ff5a09ebd12fa09e33b948dc28b. 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/e431dace-e053-4864-a0b6-b7bd17b97354.json and https://artists.proofprofile.net/proofs/artist/e431dace-e053-4864-a0b6-b7bd17b97354.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 0x9110f5300d52439f94b43ce396e1b6c185e62c8ce4f273f5916b212048532e91. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/QZHN62166788.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1db9f0a383e7c5daa41b46e616b31911f3535ce1b3150f6a4edb6e18c1fce5f. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T17:58:04Z), 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/MYA112200226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf447dd519b2eab005ab57f5879c0fa34c450849895ea3983e84e6da49e2cea94. 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/MYA112300153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0014a67282e49aa160f1b75f7a4c73528587b5861eac4827619b83c7c804ab20. 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/MYA112300045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00a3d64c236951d0c8e01a39ab99466d56fdf88bfb175e26b46db5b6b291ef3. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/MYA112300046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7edf7d2c1b1baae7541f5caa3290567e091b3cf7085b66a4b85127286cbf48cb. 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/MYA112300047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824a991ce46320a6c47b0f2b96b2d760cf112115e1e55904e004bdffe61e6435. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/MYA112300048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51462013e5baead242fa373afdb585937a639ce2881484a42134af4f0b2c9e3. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:21:55Z), 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/MYA112300330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eff0498d13aa88574b06c05039c588fe1b6525f02653e1ed9d44917d3b979a6. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/FRX762484535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb1a6cbba30993b720695899c073cf8af07d37229e8dbed424f57d50cfefff6b. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:09:49Z), 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/DGA0M2420454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0660eb08a7ae1f0d7ddee96af78cf65fd3e6048c514b68ea989592788200de. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA0T2407775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb552cb23ba7bfa69b91f7707960b9f0f788196a57b0bde7a228a8b4c98264b40. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:04:07Z), 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/FR10S2526975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91550d1f4f2707e086e68b72e266da04fd9beb3d1de175827293467dddbc6301. 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/FR10S2526976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b0660eb08a7ae1f0d7ddee96af78cf65fd3e6048c514b68ea989592788200de. 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/DGA0T2407775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x338e6736fe2ef4141d5b6d89e88fc184ec2eb7c6f414675ba4bf7e19001803fc. 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/FR10S2526977.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841715d1c42bd57d799e2274988738ac0c3db64466ea48c1c91a0f6674fcf431. 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/FR10S2526978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe275558f757ace1687acb7e1db3a7f565af36c281da645a1737be255341b3bfc. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR10S2526979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b21a9ea5d04cd5e265695bb727023e484bd0f30a7193014310080e2a19c3e0. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZNWR2344386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa134461c10524f1de34293bee3d909ecb65264a64f52587e2948de679213646d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CH6541777258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28592119212eb3e494a125a22a5efd6d9e450e15ba73b3c1db883aa346c641c6. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FRX872175505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dd36bf5f7125260cfc46db41923254658bacff82d9c4030c630d33a31de9fd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/FR10S2437460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48c5e1878bf1860f9d23dffd417008c747bfe18f77237de15e2c28035440124. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/FR10S2437461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38243cb993748d48a7d421a59a76ab84ddbb93243e6d97d18a092ec9cb302860. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/FR10S2437462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae2b5e7f13635c98d323ed38d04a2fbfed8c498df2931e3e0b3d5c6ab2c8b69. 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/FR10S2437464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ab6400ebcde8a35e17334052644ce6933aace92f98cf933d64459a1883a742e. 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/FR10S2437465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20708bbceb45f7eb12d1cf34b6f21374c4a03d8f8a73869ddb45bd9b6f8c5530. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/FR10S2437466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75f9146875a17654036c1e5b0fc59633060695e41f615da5d1104222dfcaeec. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR10S2437467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8ccdede2af9f7e0d80482da737ffa3f8bf755a5aae42044b1c1a0837a203fe. 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/FR10S2437469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb33d8a102dd277419781a9f86b1f1fc7e7129f1e340351f958a2c3be509a42. 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/FR10S2437471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d42e0c44916333e4e693dfb7b147f87552f72981fda33af63a845dae3ad1af. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/MYUM82300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4d8fd127d55cb995c468459e997664786bbacc3f0f9fa9fd78b1624bd16f9e. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/QMDA72236504.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae55c47eef5f3be76534527e4cb48cac8c577902562973fedfcebf6b10329f9d. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/FR10S2437470.