thumb|A PYREX 1-quart measuring cup manufactured after 1940, featuring graduations in United States customary units Pyrex (trademarked as PYREX and pyrex) is a type of borosilicate glass developed by
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 0x2b9cc5ae8c62ce9bc1db529f81daaa98ccac45021af694ac3e040b81a964df46. 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/b378fa60-488c-41e8-a7f3-d3bd071859bb.json and https://artists.proofprofile.net/proofs/artist/b378fa60-488c-41e8-a7f3-d3bd071859bb.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 0xa93ce12e39dede143901fb7829363e085961ab0a1e124efc679b5e13f1d1cce9. 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/IT1F71900052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3cef50c07ecebb74a9cb579f6da2fd8283f403e63fb85cb06ee88bdc2718ad9. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITUM72400350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6cbd3adb84db033143b1db3eff7c4c52b2f4866ab391dbd2e72c4cbb3e982c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITUM72100685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c6169fd01b036f61a61b61a0f8a648825b91f41df1d4b071d00bbd8cf5f778. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM72300697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a251cef63cda60f651777e274a84f3575a6f90b2d983f86e1d14136aedb902. 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/ITUM72300696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ef2f9928a117eda5689bccbbef6531cc4aa4eb3db52b2b7402437647e09a7bc. 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/ITUM72300698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53e1cbb1fdcd64a43ee69fcf1f2d79afbfa81606ea557f4eebbce25a6edfeefb. 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/ITUM72300701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8bfa45f7ff6454595d5e3b3b08acb603ff95029b47ad72b422d07d8ab62931f. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITUM72300704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc8ebc78fd80089c9d235aa1715236efeadde405aaa9c3c98caf46851dcd560d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM72300705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b058531b8e46318a8579573e8804a92b56064d57c868315ffa85e7cdfb1548. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM72300700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02557ee4475a215f73fe6edc8441765c09f4c122ff6394325fdec805104d5ad. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM72300703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8278e54574e35d27f36102e447ff76df3589a940b243cf2a33fe7744acc5268d. 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/ITUM72300699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e1a19e1c3ebacadadff214b884aedecee5447d52621378534d7f5aa8c94453b. 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/ITUM72300702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8533ec432f75e6ad887d134d6141c8f2f8617a38dde351d8c1ebafb830147696. 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/ITUM72300600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c66ac2cf2a6a319bebaa42139c17320b0c0b7d9555ff360dd64b0f88ac7b85. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITUM72201300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fe67c8b452ac5493534c6d587faf3520ea37c3b2970f68c0d1b4312ce13a422. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ITUM72200721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32f41987394f02b552fa2ebba43f113efb1a8fce5c193b73a11d2f3ba9f5b30. 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/ITUM72300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd01878c0ed322ba98d419fe60ac3044a6646f26576240b76bee94e4b83f8fc3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM72400052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa32f41987394f02b552fa2ebba43f113efb1a8fce5c193b73a11d2f3ba9f5b30. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM72300601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c66ac2cf2a6a319bebaa42139c17320b0c0b7d9555ff360dd64b0f88ac7b85. 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/ITUM72201300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x584ff00887314c8bc28aae94e21039af6b3836f112321261feabb892b8cc0b60. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUD51900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa06ccbf85b0eb6aa25fad64bc74a610c99cce34319513124fe4fccf071691315. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ITDJ72200054.
DREAM TEAM (feat. Pyrex, Capo Plaza, Tedua & Shiva)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x307cab0e5ca63ba51f135b13bf9e39d337b75213a1f561e1c3dac85fc8e375e6. 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/ITB262101020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88ef98471e4143fe4c5880a6dcbc017afa0fbe2dcb8cb189636576107ed04d38. 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/ITB262101040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e6cbd3adb84db033143b1db3eff7c4c52b2f4866ab391dbd2e72c4cbb3e982c. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ITUM72100685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe29a0517055ae5d0d762bfa2431151d907fd9f57473b5c2b69e0305afdf7baef. 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/ITUM71900855.