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 0x6240dadbf1bb7526677ae9ffc048cda809e70061c13d9dd80e0b94e18f24a382. 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/bcc7411b-e0dd-478c-9747-41542710d853.json and https://artists.proofprofile.net/proofs/artist/bcc7411b-e0dd-478c-9747-41542710d853.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 0x5f6828b1582feb139791583d8986e0f45b348131193bcaca049fad2d7223a2a0. 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/USX9P1173579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebdfee77c31876f5ae7e09b8ac2d04dcefa4aaccb5bd376325667f43acf175de. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USX9P1173580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe15ac809bb92ab4ff30ded35f024d7e91104b0e266fb3f3e802dfcfdb958e6c5. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USX9P1173588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd77f832f9086ea5ce9d07a66a097203fdf5f1ce61e44a1e7534055c9e520ee2d. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/USX9P1170513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9afd811e0dac0796cd91cae4e77d6899a33f1d7f8680a73b6a176bc325c3a513. 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/USCGJ1364756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcde10d7ea225c31663e59d6d28b095001ee7939413d7da6b77ba0dbce639ab9b. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/USCGJ1364758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924119bbf889c8f9edcb926e5444d7aa2b70eb3abebb73d7826f0a681f566089. 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/USCGJ1364766.
Grand Daddy Long Legs (feat. Tyler Wood)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271af39d4095c6e39293e5a51597886843b7069b22c876f7f561cd07f733607a. Chain 2 (Bitcoin): anchored in block 958714 (2026-07-19T09:51:44Z), 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/QMDPP1400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x271af39d4095c6e39293e5a51597886843b7069b22c876f7f561cd07f733607a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QMDPP1400130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aea4608a6b4975d8acfbf0983eaffb7dc5fa43740e5d2fd60ae026bc6350320. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QMDPP1600330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e9a02162b72593a0f7fe4bed55017bfc7c76440fc69572df5b0f11c6cd17260. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QMDPP1600332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf41971e86931ab91ab0cecf382131542bcabe83ae770141024af97c832e01f. 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/QMDPP1600334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0812b6537b94c7d35ce346b94456035bb2592106461c48c549e747fe0552bbba. 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/QMDPP1600341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefcf8b2f914f2069e1dd69c3ab20be9fada9f5adec0580ae99b81fc18b553206. 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/QZ9UU1700025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7460019856714d5ceb370eeb7551bba0e263744a317603ecb3792908eeab6ab1. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZ9UU1700020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302739d558ad8940bbaefdd681f407d0a359830537a0a2d7a5dbe122034036e2. 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/QZ9UU1700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aa7836aa0bc274922c10818efac6b129271de44ef366634f0f8da1366dd1d04. 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/GBKPL1804300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa97cafd75430e930a97110705b71ccc59f85aa6fed6028afcf82bcd1453dea1. 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/QZ9UU1700035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c3d3c11b308a4fd26fa480ad3d0a1b899f0c08a2764ffa36d77c8ff87d1c0c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/GBKPL1804295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x027ca5ee476af49c1578623c521046ab9d001034923dd93ac9196729ad6c59e0. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USHM21987897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57fc1407a71fe738c0ecd2ef3e8c7ebfdd4496f91e2d7f6c42ce541b0cdf28c6. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USL4Q1919620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c560028e28722629f3fba0d7df5d2e36197e95d7a327a962fd181467b75739c. 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/QZEQU2132568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29f127ce54af35ed4abef47698aaefe61c43e2d23a17fdca335a1d1c6e94ed0f. 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/QZEQU2132569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb5400e183d71c747704b54c1b1ab1cc2a1b1d3fc1087d8b1e2f3806afa1d0d. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZEQU2132570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57be330816cbb4a8e894dc7a54571261d0f720c6fd34d22723ad40e1c9b4a26b. 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/QZEQU2132571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc803b055c972fe249d2c0457fa6de43f586a9d11707ea8173561b9faf77be529. 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/QZEQU2132572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27e4610fc8e5c45b186cb425ce6f2542ffacf93838f8428797f76044495eb0b7. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QZEQU2132573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3fffd8f11f13e9f0b1026366dfd647e7d86140cc41f14708b228656d30112c. 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/USX9P2406527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9aa278875ac1fb56907c835739be2ad91ada263b988f4f39c98aadba594c24. 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/QZNJV2376732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e62ee45a26f1b230538684e2ce29ffdd028f1abb1033857c858ed3855794234. 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/USHM81628394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ceafbb50e5dfcc88bad00bd78cdf7af7929f11b80a5eb798d7c7e22e3c1326d. 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/TCAEC1984395.