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 0xf218cb169e84b4cea24478e4baa716ecbc03b6e6b43e2b3c49110e3afb3c8a79. 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/378289bb-22c5-4d1b-92ca-326c3f2cfdcc.json and https://artists.proofprofile.net/proofs/artist/378289bb-22c5-4d1b-92ca-326c3f2cfdcc.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 0x8ce07db35f818ba3ebc590bafbbb4dfdb484ad0dddf92583172087b57143543a. 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/USL4Q2242867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f3f1af5fe8924ca4bb98895c2cc6d466457ea950a85cc14a206077d054cc11. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/USL4R2232899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e947d288e33e698ba577d60c6d2afd70d295da10179405e22eba97855f591b6. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:31:50Z), 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/USL4R2232903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1ef2d4849c1e9f6cde0776b30cb346e3ed63b42af4d3ceee196bc64da011a3. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM22330799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104b28223c4ab644d828b857acd369e580a0b4ac3eb83d2f41af9d026398136c. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USHM22365854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093d51b98fcd2c7c86c045b4e952775204cd42e6bf969f14dcf5eba8b0006f78. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:19:43Z), 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/USHM22365855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe544341b5590e4ff5700a7654ed60b116adfd55df3a2e79598ecf373d62df6e5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USHM22365856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1b3c89373650a25da90b52f03a9816889da8ab605e038f520d2f8c037efb94. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:51:58Z), 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/USHM22365857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70c535296f8037c1027dadeff1b513c3e9d8ec0ab96349779db44bf299fbe7df. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/USCGJ2452819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1aa53f65b9005812ae5806fb1b469061a8b5e05983cdbd5f5e90c67679c49db. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T12:41:15Z), 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/USCGJ2452820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1047eb56c73928b5ee01269ccb8bbe217055b7c9d6e4259de59c642de66e1194. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:34:39Z), 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/USCGJ2452822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0620f7ff997d56cb5deb1f9723cb11d9656377b0fd7c151496c48bb880290583. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USCGJ2452823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x621b83ad91257f847f76a26eb1263f90ce883a26cfca95e5f6596476c27b5b03. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USCGJ2452826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e0b22e4a8ec550aecec6467d321436c6869d9501f285137bcbed848d1589a3. 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/USCGJ2452828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f1db0ff8ded9c0d289fa6736cf2f288a74fc51de2e9f76fbd358ae5d6a72b1b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USHM92442744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ce4229845570ea99ed0cc15ede483b01da72c3240fa180e35fe76e94dcb669. Chain 2 (Bitcoin): anchored in block 958498 (2026-07-18T04:54:58Z), 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/USHM92442745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x454cff4af786937046281efb4bb76d6e45d51e027e74146d2f1ebdddb7ab2711. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:05:48Z), 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/USHM92442746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32665fb11a672b03f3ce9f60118dfe602c241fbca1b57d2708feca463e2736d3. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/USHM92442747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fdca8f70e7480142658b8a8872328213131d01a97658885492d9c9caa2f74c2. 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/USHM92442749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4d551391115571c5df153adbd9d05ea66342b36e7da4c9a8e45df08e8a449f5. 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/USL4Q2469169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d7d0a0964250965f9b88bde0521ac502238bcd90947407153f0955063955d7. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/USL4Q2469170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb615fb2ea10b3166d306d386812d3ef1b67538b15fb49c485ca0de601103a3. 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/QT3TB2404194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cc2ca47d756840cff4eef7399555888eb663785993c271d113b1a90ea389e7e. 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/QT3TB2404195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe28b9b3d8cf7dcc131ec8cd27fe7016565974467dc264574ffd06f8f7d3b5c51. 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/QT3TB2404196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89dc9646688619b1c6702aab80e512316e61bcac0d0f256408ad003b931df02. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QT3TB2404197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dda9cbdc213c26489c4dcdc9cd9ee20695623a4c171e8f4a7098f6502254238. 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/QT3TB2404198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x280ecefa756a2a656f9946b780863833316319adeea6aa4e1bf5d8a96b3f245c. 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/USHM82550175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76fd3b619fbba1d899e7163d653781fae8b12fd703199d4f95cf2db2d86995f9. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/USHM82550176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e63fd128d25e516181263509075c818d500f63a7e412fdad2c311a25303e97. 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/USHM82550177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b936dabae4d226bad1561018b7a98ebb03482d7aa2d2952c16c7626131a5a6. 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/USHM82550178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd1b855de56dedcf24c5410f641cdbd76a4f8c837b1635702df38d81863fa26. 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/USHM82550179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be0c12c22bf07c5434ab584b3aa0667e5de02e61547b8d04076a7c0bfc72637. 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/USHM82550180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ba4d1d298604b7a2b8b72defe7d616e506af9156608850b8fb387440e939322. 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/USHM82550181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc168d6c3a7fbc6b3ec267d4d1a4728a4d18df921864cd276c9ef851fc2569d72. Chain 2 (Bitcoin): anchored in block 958476 (2026-07-18T01:26:56Z), 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/USHM82550182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20b431ab052d7634bf031dfbb030d99b4c69ecc7413ec6ebfc93be4cbba2bef5. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:54:54Z), 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/USHM82550183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8622b8f8bcb712b12061360ad5c42ce9877ef1252e19b563584844c506421b. 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/USHM82550184.