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 0xe73c3ad8693670e86a3cfe3e3a7fa48af7e056cdf5c3b1accbb736ba9cda9e2b. 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/eec7cf1c-4cdf-4895-9a0b-684ef10fa1f6.json and https://artists.proofprofile.net/proofs/artist/eec7cf1c-4cdf-4895-9a0b-684ef10fa1f6.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 0x3f146d38fac174d6b442ba9f1964ab14930774dfedfe5f4bc1052fd8aa13ccb6. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6K2220969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bc642b66342a9c8c08669451365c2dfc660f335f72f1baae92f8bf00535766. 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/QZTBA2238822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9a02fb51abd556d3af684e79b79eebf0d393b72f953f57a9c1609b5b15e75de. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T13:10:36Z), 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/QZFZ42380122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8720fa81f843fd311b8a9da1ca19360d13663addc0a85ef0d2c4a72d8c3c5ed. 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/DEXN92399992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc096644005fdd110fbbadd8cea72ea72515df9ddd6af615945eadc9f1a092f12. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/DEUE12418823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13451c134e6ae3f644e4706f72c943b046180c5c6a31b4ca3ed3a9a0236a1e4b. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/DEUE12418824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d62a074ff153ee5dac39bdfb40d5fc1793abbb57e83bc025c70c7127a449f2b. 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/DEUE12418825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x793b5cf04d9222eade309fff42e1192aeebb2bf94fd6f9a14e0e78178cb2e866. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEVU52483879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f8ac70bdd46e0e908a4cfb18d4f0db93722fc570cc1ec341c304f8b8afe308. 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/DEVU52483880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0277553b8a107b838ff18232d24d9d6d05f0294554394e308c1220892549c2d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/DEXN92426753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3a3eeb3ea73a680bc74901cf700c33b0f249db04bf947f087433dbffb18e24. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/DEXO12442634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ca006dd63360f2bcae498e38ced393b0c58d523d9a9b9bfae68c4427309804. 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/DEXO22417209.
Jump into the Sun, It's Warm Here :) :) :)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe27d5a0e7ac83f235e8df630fcb918aa9515fe25752357c824fdee526c09939e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/DEXO32401911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2637044ea6346e5f2931545e59419f391ae6d448012dd07f6dd997b886fb942. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/DEXO32424371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07fb1c1141f1ed06d386d19d8c8d72923552496afee22a0128c0f5699108c0a. 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/DEUE12587404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adab7f9fb15c57ee24d262ce5aa7595ff8f920251d30198a8a76bf914bab043. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/DEVU52576835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb53856db7f56f63aff4d0cf054ba9a1eb1a6b3939c9b4a252997d3ca419c9bd. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T20:40:29Z), 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/DEXN82594080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411ee7e1d71e52d11882e01d254cb9d2092d64077c0a619b7ef364c3eb57217e. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/USA2P2544694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d7db391efe252d33f706cec6bad385dc92534b98be996a8e835c92f0f6a913. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/DEXN92542036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9c68eb631384f4a53eeb51673b3d2ef1f82bde987fd0ab08e36314582577f14. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/NLCK42237744.