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 0x1f102da5107119b1f3029fc8148c1e7116657cb66ce4e39b094ca8a7bfa836a3. 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/24d06bd3-3bbc-4aea-b7a6-bfde9f4542d7.json and https://artists.proofprofile.net/proofs/artist/24d06bd3-3bbc-4aea-b7a6-bfde9f4542d7.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 0x68998cf9381ec5b394ce6a038558c2464baa0b1efd502b85d58c87f29725dec9. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/FRUM71701498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa19b69a231867774e2e97f7a67e9cc0b6e77f0b27fd4bdc1c91156145ed9f293. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FRUM71701499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfca5ab43419bd10296a0ff894eafbd14080b53368b47814938774997cbd4849f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/FRUM71701506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b878763d6ffd732d63a6c451de9dc0915902f3c9295236d4fb974935f67965. 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/FRUM71701503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4dee15951d6d34bbf93a0dfed0ca0abb23bedc42b9d44c1c83512bf6908775. 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/FRUM71800247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13168ed680be5226094e37e8e582313cb75f71182a5a673f7415514bd83f90f3. 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/FRUM71801289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20a4f051e2aa7600a88f7bfdc8dfc2dfc0cb3fe043caf94934a229490ea0322a. 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/FRUM71801322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d0876ae93c8e9cc3dd7a65dd9db744879d81bae98f822ce34351d3501c21f9. 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/FRUM71801324.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16ec348946f6a377858778fcaa8ebe8cb1e118688a9e11690a7b834fc47ac4f4. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FRUM71801329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x835370a4fccaf7550448577c89f1cb6c96fbad3bdc00f5af6d42c80fd18d6769. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:47:59Z), 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/FRUM71801327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6d632d4e5540edfb88504e84638cca60accc2a395129f1aa847aac3c26c1982. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T11:09:12Z), 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/FRUM71801328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9479c63c87e620a6667ac5d2151293630ec32968dd29122617e33ffcd3ef6b2d. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FRUM71902239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1383a358d60f3869e1a8f488b21716700acb1ae419a361c79a75cf68c5e8e4. 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/FRUM72000345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0422b4204b37116000664720b054de8f3a6e3e3d3f1b350dadf36ec0c2061b05. 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/FRUM72000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0a191cb878dace085fa56291383853dc12f946f244370b1bc049ff7f1fa7ea. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FRUM72000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9479c63c87e620a6667ac5d2151293630ec32968dd29122617e33ffcd3ef6b2d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/FRUM71902239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db625ee36c655b36e1ffb7981fd1391f808eb01ecb46be97d4ff4adddeded66. 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/FRUM72000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb05da82fc3ca6ee1b14bf89b55badcc344958473ec2f11e096adcfd4c3cd6b4a. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:03:51Z), 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/FRUM72000139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ac8057585cc45e07875ae4a108175d680eb9b29f86ff2cce0591427e8cd023. 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/FRUM72000141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78a2f76af7b6a1eed517fab3df922642546642d740697043ec7452b4f57e065d. 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/FRUM72000142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4c73aae729963fe596f08a21f230e2ce1ccdccf5db5ffad861f638a3cb42125. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/FRUM72000144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e062f71e0513285430388b44f8d6c3851e1bd0184376a35b02da8ebe452c5d. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:58:49Z), 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/FRUM72000146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e4054345209f35a2f7e2c0c1f7b5445ecdc9e50ce0adceefc128a9aa94313b. 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/FR2MX2000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24ca6035e00551d4782414a28b5142043fe544b28922a09b6d52b2c216a8c0c. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:38:47Z), 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/FR2MX2000140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04335516d9e80daa86a085f5ef6436df26c52323204b5c1035eb707000d14430. 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/FR2MX2000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedbabd53b58b1abc484e59a7d0212d0dc62c5678bb4bb4d1224b595658dc13d0. 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/FR2MX2000170.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e4054345209f35a2f7e2c0c1f7b5445ecdc9e50ce0adceefc128a9aa94313b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FR2MX2000190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x112331155bceeee52764361a6d13bc8a3100eaad8de6f1fdd481aed7a4f89811. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/FR2MX2000230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x470ca6d56e7b9871d7e0cd701f7c8384f31bd6627dc22d6031b7292f1d540c43. 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/FR2MX2000240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c3a791bf2ec16e0b0cc7be464dde184e0f8cf51a4a9fc362d21278eee7d243. 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/FRUM72101230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb887ae128ceba3587e877952bfffcd6cb307e794728e4277009e33c1687a51b8. 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/NLS6R1886568.