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 0x833465da9ece1704281756ab23373a32d8571356e4ca54f974983427eb738cf2. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ec04205b-94b8-4ae8-a7e3-4d16465b7339.json and https://artists.proofprofile.net/proofs/artist/ec04205b-94b8-4ae8-a7e3-4d16465b7339.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 0x4a083888c07e4a8ba4d51c1be63b509cb7fc4c42c6c24e0667cda7286ceb38db. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/NOM3A1301020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39be07c5fdc3a74320805f8388244f81f0dfd13dc181939c081fbdced917ae28. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/NOM3A1301030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec54d73a5a003cfcbfe3796996de91da70efa373ab128cf058e16f8a7562ca2d. 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/NOM3A1301040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02947954f455239d0355833ab9d70cf9df6a0e9a091ea7e0fdd5ab3a476ac4d0. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/NOM3A1301050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5c251619cfe0b8c3e0aede9a27bcc29344c2135925e4ad070277368201f3006. 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/NOM3A1502010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x111f742a45cdd846131ce699f6aca500f1d932d6d32e98a5441d29c59016f4f8. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/NOM3A1502020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0ed0e2e44156aba77c7a77041b3fd4078b56eff09797d111699114b3fe2b2f5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:08Z), 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/NOM3A1502030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcebf5a8ffe7110b3710df349271d1b08839a7d4511437eebfa6c5fbb07d41ca. 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/NOM3A1502050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2f108a60515d0e20e9e91e156ada236e909e31853c5ee2d6f999f9e8767403. 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/NOM3A1502070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81be0530bde852ec8fbdf071cd338a9b2afc42f1b782d4ecdd95a9b8b7ae7b90. 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/NOM3A1403010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6385d685e5f087b471fb6590bb98145e5abe5d9f90f30a53d01fa1d3b1cea85. 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/NOM3A1502080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33b51c1a6886f0a6f7db5cc3be70da8ee07cd62da12174638ca5c011faedee0. 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/NOM3A1502090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf470ce941cba5f3b56d7ed37cd888b82d9137ccba6043fd34e4df064924a8091. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/NOM3A1702020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f15f993c1093042ea5510a942c20fce40347d2f0f76eb129ae53e5684e9832. 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/NOM3A1702030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa57f97fbe15299f00727c1f49f2e43b619235514f948e677feda4e5d23781e0. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T19:44:05Z), 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/NOM3A1702040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98b3c8f21890b5be862bf301ed49a4f535d1cef5aa5e9d9dd6825c3074051b65. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/NOM3A1702060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef75c0309f90e20189bf73290eabe4eea6ba280469335184ed30751d083e7d8d. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/NOM3A1702070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc068bf2dfaa74ad6d65356be2d37cc38c3ccba823ffeb768496840f7f997b31. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:44:39Z), 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/NOM3A1603010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3332426dc2601eab7bc8b41dd460664b027a8ae6615ad8be54475494af48a030. 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/QZHN51930131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9469a8e99973236852a079c0f0cfdb143860b444018e69b94d618e79ad8f87e. 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/QZHN81956229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa42b5dc87f7c3f629db8f0e9605eebec860bbcf9a63d8a58495f6b7212441203. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T10:28:03Z), 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/QZHN81956230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72b083358f9c8baae89a2fc6e02438d971b4db6084457aabe143ef040ea001b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T08:38:16Z), 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/QZFZ42143075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5becacbc70a0ad8da11608962ad4db5c05d70d444a039ec7964fd735ea2cc465. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZFZ42143083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8164cb14de445919b43310534138c00719bf2af2b957ddf737a0bc7634210627. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:59:30Z), 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/NOM3A1402010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdec050ecf70e4d39697ab9d1dfad7fa8509681c66aadfa688875e4c6c29646. 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/QZHN42398081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7803826aaf7b63f39d90c98c5f7e1468de0b744278c698fdc7aea14a3e58cde9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZK6Q2414644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34ad71a054a72d57acf9d6dfc418af8f41b24725b95e1e4a1bacdd5c7e15882. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T03:47:50Z), 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/QZWFV2462790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6f98cf5533283e1c901e4a7bbfaa56fd3be08dbbd4f91640342e60470b9072. 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/QZK6H2570262.