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 0x6d9ecf9ccc7d009e2722e79003d4327da07e8685c61c9202fdd5d547c7f5a7e6. 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/9204122b-98ac-4d94-9557-9054347cd79f.json and https://artists.proofprofile.net/proofs/artist/9204122b-98ac-4d94-9557-9054347cd79f.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 0x9734b07dbac43f3a15d5168880537230bf78230b618d9b9dad4ecdefc255cecb. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:02:32Z), 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/QMFME2191880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05b78c805b30aac854cbeaf8fe9f130efab3ce7937260a33463374855fe15640. 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/QMFME2191881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab346894729a708d9760ca78672e739c82ef987fab8443f59a045c4fa6b8233. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T06:46:33Z), 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/QZKDK2121778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3276b18ce427f487809cd2bed2bfd83ebcef64c72d544e06f3e2835fea3f521f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T11:01:29Z), 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/QM42K2127586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d7a0bd172a6b8b381abc208b76cf32ae2d04399d9c275743158f76664cbeee4. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZMHM2045968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a8fd5b8e177b7e91355f1e8be6610354e715eb37ef8e5bc576a66e380a5b0f3. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:42:03Z), 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/QZMHP2058193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe25b1d0d8722a60071eba76119e28297354a8a7268ba52c1eb04a9aa44253996. 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/QZS652120573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04971bbc8c135eed23a998c5e424916964dc2374442e975612fc416f9ea186a3. 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/QMDA62119076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23c7b3fc69ef7021767e24d17aa5c6b1c6701943c28db8274cee4f2691bf617. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QMDA62148087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91b79093b109ff8676c8bbc2ee293de9f63fefb3456e52f2e47b1d11c7d6bfa4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QMDA72156192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x654dbd21e37169fd1de8dc01427b7a35df53ea4c3ae3afedfc9d28f468e02067. 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/QMFMF2130478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3cbbceb67642c1b76cc91853de2b52e6681856978369116decd3eaf430b093. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QM6MZ2208990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e265c471ef2f3309de7094396fa2df95dac56f768b12c449a7195e62b8597b. 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/QM4TX2353823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7244e61de6e4df77da8c6d6c336a809b1e961156326688da8ccfa440721b006e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QM6P42344611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x034996593425621205ffe39163681f0419502ae9025c525ae24ab81f8691995b. Chain 2 (Bitcoin): anchored in block 958722 (2026-07-19T11:03:50Z), 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/QMDA62319618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a75461f96b91497219b66c526dced59d1b62284b7a584bb60e2ef7f6e9a28ed. 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/QMFMF2311119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9385d0d39b910248f83ce568df32a3c2e3e205d5868f48b877c7203db797a5. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:16:55Z), 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/QM4TW2412746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80aa458ad610c8ec74eda81dc3c9a2a54d88d8dfd31b683d35b2871441d3497c. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM4TX2439781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d670479ae8ec547bcb1d3747e0b031d91e038e85d9d2663bff0e11168bdaa4c. 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/QM6MZ2465830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b422e3141c67032246287b11809c77f876e75289ab73de2735efba8d59017f9. 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/QM6N22483146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddddf00b9509a9d4180e622989633fd7b8a11726df7e449bddfd6c4c6dffe90. 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/QM6P42458453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa090de39a4104b5e13185afc53a9f36bf1d2c2659eb927de11abed213aaa7f15. 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/QMBZ92416543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18947a6b2ec7f799f889f2ab29099986fedd84a4fe46e1410b5d9a78e89bea08. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QMFME2433791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4560744f4529109bffc1702e217fc3087ad65e3d56b8365fa8e9fa208923f194. 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/QMFME2470416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d303763fd233bc76302a9816e5e44f94b053c0eb19f3e12ceea2dc8334a9c1. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QM6N22547084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e681f8024c6179e88648a6dca4362ce1904369f51d5307091d7530799c4cda. 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/QM6N22547085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94cdf92aaf7fd42a66c83d8316f9993687ae301dbbe18fc779a37abf59503ccb. 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/QM7282552902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb3b50529c7440a7cc62451af9fd30134ec4766f5fef49a10672c093bcf183c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QM7282552903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaaba8c40cc2d0071c31d8e3e6252efe5d19d49842d20beebf015ad0b0d64a3e. 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/QMBZ92517842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6df0b70493b7fb130bf5998c441f8a11388c48d21d9eaf6b3a905432b94cdf09. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:46:50Z), 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/QMBZ92596467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84a968f91b080b660a6c9a77bbe4dc7b3c793374eb54659e68dbde863f56ea8a. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QMBZ92596468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b600ab6893c2a2b88bfe070079b980b03633172aa00236f45a8f365e944bc51. 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/QMDA72575531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdac98eabda37f0fdea5b640101280f0bcb864c10e4a698f11127cc5c8365d06. Chain 2 (Bitcoin): anchored in block 958378 (2026-07-17T06:45:39Z), 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/QMFME2534337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fae2fe6fe4ff6320ea292fca5e4771d527ad993aac9e3b4bde16eddbbef09e6. 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/QMFME2534338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90d8cb6152770e4aacae7ff8fd8d39cfddc4f64eef4fd8b5243b32dd76558ae8. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:21:03Z), 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/QMFMF2512758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d588d5a291a5aa1c41b1e248af1f7500d9b526f577099e9a58318ab7e3df551. 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/QMFMF2512759.