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 0xac1db158ac3bd208d8a49a5927353ec0d8b3e18cd50971577649e27fbeed0e5f. 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/8e1875b1-076e-41cd-8e05-51559762957c.json and https://artists.proofprofile.net/proofs/artist/8e1875b1-076e-41cd-8e05-51559762957c.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 0x4f91bc379d641240ac287fbbefad980b3eba80e1555254f8ced7f43d513423d9. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/FR3R21225023.
Angerfist - Dance With the Wolves - The Sickest Squad-Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df48ec9955aa04e01f7a16009be34d180f98000001fd5a95f3c93e1ccb64b58. 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/FR3R21225025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65d0c6071d7b801c4090bf08cd33cc4a5fba826709c7ba493480ca1b026e0a58. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FR3R21225026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff0c94186be1d5adf133dba6be5fa7bac1020d8933c4f3a6ea36df701a2913e. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FR3R21225030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x538bfe46ddc81957794cec51d9eddcc257e1f52be74945babe6de825122ca30c. 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/FR3R21225034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeae71e2602d4bfd076ed74a2ec6ad6680dfacbeac8e79840e088e896ebb7f605. 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/FR3R21225035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e1532f5e8ec39d818f124172af5da1180349c679bc01a8810e0d67710bd6ec. 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/ITD131301004.
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 0xd29a41b1a56453969ff4e8a619d28a7eff74f05bb508b127ef512caf048a147c. 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/ITD131800136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c0ba91c043fe2a6f0ed7cdb3cc1bd7f3d9852662147fc2eec23979ac80cde64. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T10:09:30Z), 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/ITD131900075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe68e4031182ac8881835ef4676943be95e1cf78278de069a4415c6ebeeadf93c. 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/QZS662172576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3974d0c13ef79b0b91e47d381f5e003dd72e8266f46ebfc11f30a86ce92b44e. 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/GBKQU2293990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af2dd64f2459f0c0e9c7693a993a0e4f395f58068fa19092ede4bff68041d00. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/GBKQU2294026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec804d1c7958922544b559d457cfde39a1a52902d5f632bd6c7440ea61f9b212. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/ITIU72300054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5483f1d8e747f44881fee9aad15c0d4eeb0e61917090c0fd05d44ec53ca5e1d8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ITIU72300021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e3c0d3fcbbb0be48679f5555c395064eb0b30d1153b7826f36e289cd614fcc. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/ITIU72300063.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398024867c35e341d51b805cd7f62363a9ab2db93ea88a921f8ab67fd7f00c4e. 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/ITIU72300036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c766222efd5087ec444ca4a7313bb09c1e624192b6e4441a738e54ed0c2030. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/ITIU72300042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e23f0b3873038f0c167a5f3aa87430468947d04a3e42e465e716ab1c23a3aa. 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/USZUT2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf579f3aa4dbaff80aef799fc62f93af9d8ea94b1644f2097154ecc1979405956. 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/FR3R22499004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1846126f38ccf855a7ace083b5ed8b7149a223e33fba77f9f2fec030712d2d7. 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/FR3R22499006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2be45cd495b2daf918249624bf48bb0589927ce5cd3da629f41e685c81774aa. 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/ITIU72400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x862cdce53f62d52313b3b75cc9dfdd7267c15436b6c0c5a9554cf5f2d002ffa3. 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/ITUVE2400063.
BACK TO THE OLDSCHOOL (feat. The Sickest Squad)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797a18b938afb38a46808f03fea6daf164434763d6a132719b4026a16e9c0522. 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/ITUVE2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2224dc3d13ad863cd615112897353bc76139c6657cc2e25d30eff34f3fa2db. Chain 2 (Bitcoin): anchored in block 960198 (2026-07-30T02:21:55Z), 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/ITD131501539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f50a7de21fa02386fe3bb63f083ab77682d7ce0dbc220edf2600f045812660. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/GBKQU2027633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd92994ff1ebb389485a86d7c0a356406b53bee0136f7af8e0aeccfcc944ec1e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/ITD131800126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x900ae82febb821fda93bbb12c389cb5b4821c4a8ad4f62260a7d12b1067867ee. 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/ITD131800068.