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 0x04b313b9e9ed07913c62326ac60f4fedbdd7bddcb2be3f58ab262f03cf8deeea. 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/796ec4a1-cdc9-4e5b-930e-767ed283470f.json and https://artists.proofprofile.net/proofs/artist/796ec4a1-cdc9-4e5b-930e-767ed283470f.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 0x22583d8e475d48f429c8e65589443ece0be4189799dbdd9ee6173fa7f4a2dfb2. 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/USHM81976445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd10f08be44e0a30f98bc6448ea58ed36aa8b898ae0f6f208e91097d835df608. Chain 2 (Bitcoin): anchored in block 957919 (2026-07-13T23:58:45Z), 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/USHM81976448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9459cddb356902ac11c2ca156b865cba224c516a36bf61881cd3df439b6ee67e. 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/USHM21433380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb441219a57710dc3bc61b91fa92c8007f6e15a99d9f4317f723c0d317314d733. 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/USHM21433383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f23a7b82ea43da3bdf57c2d17a793939b317b272d5436c806dd84a051817ddc. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USHM21433386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9e11a923bad34ece54c0109335a4c12d45cd5547aa9900f1d157cb9311da19e. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/USHM81585388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de0a605181e5a651b2b3739e1de39eee634e9d1c5c44eb2f7b244df75f9fb09. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USHM81585393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad0c043fe8d0e94e792cdf6965acf00403f59b2eeb02b2ca6cfc2b601a55863e. 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/USHM81585394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dc493d3f7621f9279c73e91cbe9fd8425e47b9ce5d617abb93cba953912b20e. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USHM91786918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33e3164965954aca89c802386283ea8c2e553937734d4c840364d931433dcc65. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:28:54Z), 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/USHM91786919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8e56471757b4a052d21fc1b966e6d38e6ae8c5dcb6052adf365336881c67ea7. 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/USHM91786922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fabe21e462f41c78845a34344409728d8124a3632e589f7aff1347b71f8d64a. 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/USHM91786923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de1d1d0c52015722f0ad1032a0108db45b4a4d03fe18fa0fc633fc57320e209. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:00:27Z), 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/USHM91786924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c1319a60a0e23dff6e61a659ef2e129fbe3c6beef4188144c21e0b5e752e40. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/USHM91786925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc87c4de3249abc1981c1b1de83d34965a44c2cc596f889bc695a5ae8ffee0502. 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/USHM91786926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3140926ca4f24830f77cab8a1c5daa01f6b34ba7cf20544b69e25a317919a6c. 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/USHM91786927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce8084475a3aef6bc755278569f09572825e196cb8ea64dd8a084a78a6e042fb. 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/USHM91786928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe468c852d77a24a7ef732c9395bb68413e075410b31a68ffe73f33f1f8c3298d. 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/USHM81922571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2314245f8676a413572f4d613d128acba25733bb70499fe3c2342ee3d7eed694. 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/USHM81922572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf8275dbd174c7bbc607e8c18977d80fb73f1092c75b898f3e5c9ee15b36b30d. 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/USHM81922574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7dfe52eb82d83c7d0408bf70d67c10e3e1f795456fa867465084595a6a6ca4. 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/USHM81922575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c4bea89261dac8d10af4aeb2f22ad6143138d5ee278bb618667a49e560ebc27. 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/USHM81922578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3028b679d5f43206b4dee43e78124c5436530c7cb2bdf84d53a7dcda27eb7339. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T06:48:23Z), 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/USCGJ2153562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09bb599c870d69b4d7620b924dcef93d2a17f2eb96ff807ce63ac6be66418a2d. 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/USL4R2158804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717e2e5066b3ebb1bf30837d41f431f5e6cfe8dad75ae2852a2b9363ddf1d2b4. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USL4R2158806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x042eb4b30ec76bb536bdf8e2703fe3efd9bb79303f4da39a6e875445a48cad70. 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/USL4R2158808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1082434a5e37513088dee4726255f2987f0c4921413a82949d6ffdf7bb7e7a50. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/USL4R2158810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c2f3e6f485f11a9e70abea610995b695d543ccd106b1511f8c5746db668e4e. 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/USL4Q2289191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd89dc584f351b9fc3d533f569b99015a78d6034e7631f94a4856296378507c8f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZWDE2401310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6430bd3203bf0c93c1dacac169722b5d401971afb11fbf99565ef4744b2944d. Chain 2 (Bitcoin): anchored in block 958202 (2026-07-15T23:55:42Z), 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/QZWV32445695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fcb6d49efea1d4a8361711572c47aa1d4d12beadf42d23136d9716e98fb675a. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/TTA572500014.