Iago () is a fictional character in Shakespeare's Othello (c. 1601–1604). Iago is the play's main antagonist and Othello's standard-bearer. He is the husband of Emilia who is in turn the attendant of
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 0x13cd9b5b50762e0ab4b0eb07da0fba5ee04e4998075ce1b2e0417f81d1d20304. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4fe4523a-2fad-4a2d-8a71-4b4696080cf2.json and https://artists.proofprofile.net/proofs/artist/4fe4523a-2fad-4a2d-8a71-4b4696080cf2.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 0xc79295167787799d4d39508aa03cc0f516ba349fac94dd40c54350f1a04ab373. 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/TCADN1897041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4354538c2cdc3cdd953458e4a4ea0b48d312435f927668bed045d414f35964c2. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBDMT1800009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d9b9a25a695fee7990ef4dcf388ddfd332ae3a6bdc12707efb52ea32727325. 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/GBDMT1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c485dd9a9adc65b8e91e2481e371ca915c89f78d870c841145632b1c3ac127. 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/GBDMT1700493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d0266bc118e3fbde8b13634aa4e09e51d8c628b6d1663d3012154edbb9ccf2. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBDMT1700482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb8c57e78a855831968251dd73d264cdf668a5710c5739eaee4b88ad3b1fdf0. 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/GBDMT1300853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e077f7363644b34af58c3a08b308be404f799ee9f0879f4900a4f17a9ad6da. 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/GBDMT1600079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8b0ad2ef0daa652a322e5ede7fe3cea1dbd6c008cf48bbf636c2ceddf1c3088. 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/GBDMT1500255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd807395e5456aad8cb523ea94ede7193115da85169958bc663a0a98c16b7c2. 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/GBDMT1500371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c6f2ba42876ea06bf01fe0c44301f748a356e8f35701ad90418b7d9b65bf60c. 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/GBDMT1400301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67cb8d276d8902faf6ad38399b389367bd768ff0a3415c603bc0268ca7ac906b. 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/NLQ8D2201056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7538d131174e0b6f4421b927f8a025c68e101318c00cc3b3cca4b3338adb7b98. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/NLQ8D2000052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86d0266bc118e3fbde8b13634aa4e09e51d8c628b6d1663d3012154edbb9ccf2. 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/GBDMT1700482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a042ab43eea73ea231c50cc446aaef37d9d571e4b06970c9de2a625e88acac. 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/DEU672002033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee332b5f2d61b00ecdaf4f12808cf6150240678bc48b9ce75f50a563b65d92bc. 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/USOM81152205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c264557a1a7bdb8fb7c3155c927f6ee2204c87b7d64bb197841238d7211a151. 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/DERN42300220.
Drop the Pressure - Purple Disco Machine Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x797c2a187359892860e7d35812a12f46431dbe93e4c9bfb0ce71b0c199d5a642. 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/GBENL2002693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d76cfa4e5cd8842cc16b1e2d095ae1b8792b540d4ce4a31ffa7ca3fc41963f. 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/US2252237202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05808020ac1635f4cfaa14a9f92ed1fccced3746f6c1f6e598c94eeb319a79e4. 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/ES84B1510384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eac1ce927a9acff4a1d7707124acda57ea36f3121c633df3f1300ffbc064a9. 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/ITYEB2300446.
Who Dares to Believe in Me? - Martijn Ten Velden Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x902e416196717dbfc3d16fd4e80722ba940e7854026b93adae0be35382fe2e7e. 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/GBDVG0969201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd1d8d9543a3b2fa55c6badb5e228c7c261491dde12a5964ee9356f6231296f. 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/DEPI82308818.
Keep Moving On - Michael Gray Glitterbox Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d58d60b5db768f927663c47f2144fcb34388228105969054a9b14b767bf0d8d. 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/NLML61800102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eedb3b64834772b0625bd9e8f97fbf782aff82ebb520a03789f8938f6c1fa34. 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/DEH742041299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bd41f424ce09dd13e671d71da7c06ef0a6838440772520d2977aae8822db7bc. 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/DERN42100321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506aa29d1c61670e3dabad21c55f6f55b5bca3372e2f07da3ff501ce82b41a12. 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/DERN42300161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f9e324a058aeafe9e36f53fbcc60c56a12847bad1ab71d7fc56ba31c9822120. 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/DENC32200048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcbe17e719ded65060b04aa07d91674607c33ad45796fe4c3aaf1d9341c72059. 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/ES84B1510511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4ea8286fe6cb33cc624ffebe93485d28ef823c62d18cb9045207e415a4de7a9. 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/DEU671300028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe867c38bed63bffbfcbf6e106147b9bf5a16b040587741833638418c4666fa64. 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/DEH742303884.
Let the Sun Shine - Purple Disco Machine Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8678532ed0e06dd65d0172d487e48c3a03d55fb2c7094a5b2ef8a70c38b6e1. 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/DEM932000892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x926de833a31b500216acf9db0f27490748d67e5c65b600b6cc67e49140cbe440. 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/NLQ8D2000648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db860654b5a62b79cb2feb6bc133d514b2b3ffbac3164b8297d4cca6de87e34. 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/NLQ8D2000654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe926c078e3a70463fe8281ede25157fd09abfae98a30026dfff60bb6dc4ac11c. 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/DEM932000791.