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 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 0x743a5aaf7166c9b6ed9004c7b5aa75e9f3c6b449ad129de4985d93d935e3d815. Chain 2 (Bitcoin): anchored in block 953721 (2026-06-15T01:12:01Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8a7ac419-3986-4813-b1d2-a4200914bafa.json and https://artists.proofprofile.net/proofs/artist/8a7ac419-3986-4813-b1d2-a4200914bafa.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 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 0x73368ad4aa8b8e2e3d22738a4fdb754e8b34d4e8e7cb3a46e71940683fb30a0b. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QM9AA2034111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242926fd478f405d956bf15771122ad99ffd9f3e94b3549a6099822d5f7a68d9. 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/QM9AA2034112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc17c0486ddac4f5800f0d3990d70d76b4e671a9cb4b5a3872314d00eb0b567b3. 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/QM9AA2034113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x707e228b2d6d4dcbc71bbeb71fdd9a9294e6163064dceff455db9a95439ebce9. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM9AA2034115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584b1c7fca3783d193cfe636cfab3c527b149aeeb795b196347cfb2a6526e630. 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/QM9AA2034117.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x269e6ee418a678d0d32121658e00dcea533f845a19ee62e01f206a061c00c290. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/QM9AA2034118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87333a75cdfac02c9a4793da0c7121ace71581c4625eff333a8a188d3d70a65a. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QM9AA2034119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cf0aa53e1c043efe3f67804f8cc99afdcd9a80e55876fbee0ec00beca058d0d. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QM9AA2034120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54794f42d8ecd5b080e3a94d766970a152c6c99bc5eb0135659265a69fd647f6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QM9AA2034122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ae47fd43e5a1b73b21e6c26454428b81885e8ac4a31cddf92b755ce3a54646d. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/QM9AA2034123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e264fc73c182b1417c99cac08841549ce1bcddcf4ee414c74d2cb8c35cedaa. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QM9AA2034125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a3472a82b84170a75243ca7eb5dab71187bfd762ab63394de131d8f23ca526. 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/QZHNA2453642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c10501f69db4250c83887b16fed0b83af041190b4ee70f9c7f5577a5cccc37. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USHM22019431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3766a71cf765b52b3d9396f926a553b2c47d872b9f4cc1482d5ec126e8f1039. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QMAAK1976075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970920747f0d0497b02810460cddc9d8e1f068091708241e904da39300f8cee2. 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/QMAAK1976076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d622586265772636edae2b447c7a8a75291e5c75287cb9196395feb69d892b7. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/QMAAK1976077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa222bc717e524bb7f3b79a39684a749950b4016fc0956641bf5ee9831dfe8fb6. Chain 2 (Bitcoin): anchored in block 957198 (2026-07-08T15:54:54Z), 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/QMAAK1976078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1faa8d407ac98941e3e26986c2110c7137f8d1ecd36aa038f71863e6ad897ff2. 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/QMAAK1976079.
Rootz 'N' Creation Meets Bengali Arkangel
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf11c9f37df239d603b628dd7e426dc39163069979512f3f598946220ad744723. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM91338624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ba1940d73184de236004b5887ba8112e71e62b03555c0e510f99fa66c45210c. 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/QZPLR2247477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2b501a2d8ead354a27fa1f0450c4384302fa21eeb81d8330ccadd89d486f32. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/QZHNC2162885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32bbe643d2756105393dfcb1e13a50e91c606ebddeef307d95639e747240c750. 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/QZPLR2247478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9b8a15c54e4e5eef9ba8b2517a379771f36bcd2e344056eff714ade484c79f3. 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/QZMEM2146033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa323c1131cde05a2d4d2ae7210a70d8de60dcf5ccdbaa36d2ead4b740ab2e064. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZPLR2247479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a04134526f401bc75dfe220254dad32a61c46d78b6eb1ac445df3e4c5b58546. 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/QZES92262249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c414dabde82cf9ab08b5d2d710d04e891383d417ea40a4a9e4f43827aa338f. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/QZPLR2247480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd156237288e1f092909edb72acd85db26a3e733ec48aa5dd1d8ac3998f3c989c. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USUYG1380586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc237a95649468225388553ff3036e6501e3c991d3f315fcc5db1d797c5b79dff. 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/QZNWX2133107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52c6ce63b6c06e09367216743d3a6bf2e58dc2a09723acde11f6dc171ec62e13. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/QZK6H2221212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x733eafd203b1159d0e0375802778add1f1f9c018e2439bc789dabc794ff5297c. 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/QZK6Q2380032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9908a10b8a0813f3b3043576f86d06ed2ff59372e837f2348e89db07fbc152c5. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/USHM81561532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4acc8a478df1d55e3632bea176159487bbbf57f0b8074df44a518f488afaa16. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/USHM81561536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cbb7d97293d23b21d3df23ba076fcaaa4eb8365e3a5a95dac8142c9c501efa6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM81561538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a04134526f401bc75dfe220254dad32a61c46d78b6eb1ac445df3e4c5b58546. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/QZES92262249.