A widow (female) or widower (male) is a person whose spouse has died and who has not remarried. The male form, "widower", is first attested in the 14th century, by the 19th century supplanting "widow"
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 0x03a806e9dbde71a92f9a985db2c247879ddc1487644ca179d35086f2df122b7c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d2001b2f-ff45-4833-bd22-f3a7e7f217ac.json and https://artists.proofprofile.net/proofs/artist/d2001b2f-ff45-4833-bd22-f3a7e7f217ac.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 0x6bfc3c959f27524d3050c022d6bb3073bc1c962cd89a111e80ab5418c5ef175c. Chain 2 (Bitcoin): anchored in block 956482 (2026-07-03T10:33:57Z), 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/QZK6L2007550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2bd8cd4ce5a80b77f51b9e2ce68e9648b7fd4593d8a83fd4d806e1edd6c93e. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/QZMEM2055931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc7a48b8734118ddf5e73f1994c56f192f1190b84f1193973d70bd1c3aa2e5e. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-02T22:22:35Z), 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/QZNWQ2054909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9843575bcf2573d5c826e00524171dea759afeffaee900bce5d1d654a356d79f. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:42:03Z), 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/QZNWU2095959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ec97367b8d1e649ce866f351773a153caa763867c06435eaf46f2059fbff39c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZNWX2023226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bd34661c0f6c3b1c22251556d6fdafd02902769a34e5dd1614d3164b579529. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZNWY2072638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d4df531a8fe9aef0ce5144bb5da758e53ee67d245a7e4cc09cd922191306e6. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZPLR2012468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb25cbb7efd1434c942d1de8d4fe82c9a7e756d8671c0de658b962eaf2f4348f. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZPLR2092019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83baafdd2225be41ca1878116c54d8c1f2275f9c1fb6aaf3a286c6463cd5087e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZFYW2158184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4358bda70f02a9260d68dab601a1aa93f15ebc9f5fe3a5a1db8ba1f55383e664. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/QZFZ22184225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa888e0a6263c9e0ed6c165a2c32065a50bb8bb050829de58a2cd03ffc2d1cb51. 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/QZFZ52116187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49e7a245f3d2866647d8617b02cc3f8c7e98b59680320e3dca21b4a3c3ec4f24. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/QZFZ52151207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b9215adf4a0dd90d2d28aeb060a60acc11fe8e7d7271422a925184f3b35eb2. 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/QZFZ72127344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c3d5dc53733a6eee9791b0e0a88010af7ae9ba4de6e0dde8111b971b3455a7. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:08:33Z), 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/QZFZ72128936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd663baf896f3307c6a9dbd489555826bf25390b5837efd736b39b7475903f579. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZDA42178196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19eff950497b3b5b397b414aac605eb823bbbfcfe04447d03f6f43f36fe85819. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/QZDA62152125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf48de0c2a106e6b11abb9fa2ae54cdf84ab6a4cdfbb36cf3a7804300a6b9fdb. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZES82122932.
eyes of heaven (jojo no kimyou na bouken)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981ab6764751178e1bf43a489360f257000e0dda4f32e3d50e685e5ebb9f4336. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN52297554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffbe2ecae42db309ea30a59e70b60d3d3ad13effed040e1f88b1e14096a3115f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:35:40Z), 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/QZDA52332198.
noah boat n em (like i walk with the stick like a witch)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f9581dcc316b10694fe4ba987adcf898f15c2bd53cf099a8147497c81a72e6e. 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/QZHN72407361.
RITMO DAS RUAS - RJ FUNK (MADARA UCHIHA)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe20cfe49065a92afff9199fab2396093b7a0246f9907029e58ae0e3c8a4441ba. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZTAW2471174.