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 0xa4dc57aa60a2ccda79d726bb1d07f6805988ab08af275e5bb2d3d6b99937bc35. 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/7175d9ed-095d-4ff9-bf1a-50887fbc7d01.json and https://artists.proofprofile.net/proofs/artist/7175d9ed-095d-4ff9-bf1a-50887fbc7d01.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 0x6efa6d8517290c6038acb789f96266b99b8925e20f60177170c2f7916daca491. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USZUT0600022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf89ecb269635b37db873c7b833067a04445ddbfa0a87058fb8c161354d7566ce. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USZUT0700008.
Exlxaxl (Neophyte & Evil Activities Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61a7e9cd86c5b0482e68a250c61dd064aa18852302f18089106f5eead54bf0a1. 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/USZUT0500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bdbe3782ad3c2b4e285ec4641006689c7376530b173e8d50317edc0f3db63fe. 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/USA560815652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52ceb692d5c75879d75b57670428803c59cfc2a0db8d4478a2bce5e1e436835c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USA560815655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283f050bbd79014b850585f33309b523f0cc2e9c55420a1e51a99e17e2030d51. Chain 2 (Bitcoin): anchored in block 960268 (2026-07-30T14:53:07Z), 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/USZUT0700039.
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 0x39eb112b4d3a492bc5c8553ac881eee1a65d63e72b80e8d1917fd4649a8c7674. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/USZUT0600015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x391e29fa8788aa376fe3da5755b7b5aa151319ae9f662f2c8a8d6444c680c9dc. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/USZUT0700015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a562e17313c15ad454028ba2338899f489318d1dcf3854d98525347742f1ac5. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USZUT2400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4fe879d787ea66e126c89d52fd9370fa4ae3ca1b96d1de4d16a40e341af0a77. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/USZUT2400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35afdd9e68dcc086ec533c75b6d572809965fdfcab01d6b913df477df49dfa98. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USZUT2400095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30668704e1ac804e4575d133de0e04dc156f9efa037a5d29f1d6059970763bc8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USZUT2400096.
Fuckin Hostile (The Outside Agency Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6325a166bf21e1af487b8b4975adc6635024024cbdc4a827803bbdb816db4915. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USZUT1100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x567246947b33f91d2690029f4dffa9232a57d3a7e8595a2157d150b1f8d33617. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USZUT2400098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03660c657f18e03511c78d01a68c985ddf660e158661858a664a130435be6bd8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USZUT2400099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0622834ded6c8992924334aec77354152e4026c823c96ae33944bcfd65989288. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/USZUT2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb949ee7f0dc7489c2efc7a99203456a46df7352fd7a635fd65645ad3ea4d0aaf. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T10:04:54Z), 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/USZUT2400097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x283899e5b88d0f95f03db776460e9a4a70d33188f83a24229f2469bbc8f50216. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V80028155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x573338db8ee1d246931ad4484629884d406e78dc1876464fad9b701867ccf829. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR6V80028175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c26db472b741e8cd809746d71a7baad1e48e0ac647dd06f303552c262960303. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/GBWUL2432429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f91cbc229ed3b3ec91b57e3983159819f00361fbff9eb6e2fb0d502669f5835. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NLFL72400405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7576afb8518c84f563fd5f1fef1e4e37c0068ddc5348d6930996397eb94bf140. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBKQU2430873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e4110c02818c2e94f01a8dd993f71e63fb42e6db6812088a0b9058b775b1260. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/GBKQU2430874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e23f0b3873038f0c167a5f3aa87430468947d04a3e42e465e716ab1c23a3aa. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USZUT2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb81e5e185c0ebe2cbce999bc982e6584e55a739fb95ceaa7c329726ecc7011e. 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/NLG422200199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3848c01d924edae733e15a226cfb12f8bb163dad353667ddce59a3e2b1d51c. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/NLG422200198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eed72d703aeed916828150973079f15bb7ec61aa7fff1488f9afb9c5031b31. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM3EF2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900ae82febb821fda93bbb12c389cb5b4821c4a8ad4f62260a7d12b1067867ee. 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/ITD131800068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc663e7681abdba2acaaaac34bd507194ac11ae42c1238b215d1c0f3e61b2c768. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/USZUT1300013.
Toda Rhythm - Potato meets DJ Norman & Darkraver Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81db8857bab26efb6922112f2480d5ddfdefde3fe43cf2abafaaa9484ae4b1ca. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/NLBP50700125.
Demolition - Evil Activities & Lenny Dee Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90244c067ceba3cae66e5fbd367291605c570de6479b5e699d9093a5dd592939. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/ITD131000799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb63abb2335c68c9c419936114035dd8ded227fee95a1f87182813a940cc9cdc0. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/USZUT2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4747fa6b50e419aa696637c8c8f17be4eb23abca84811a80c12c7b2543786b. 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/USZUT2300040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2b0ac69aec2978deea913365c85ab781536977489f86d91be166617b042da3. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/ITD131700048.