Who-ya Extended is a Japanese music group, signed to Sacra Music under Sony Music Entertainment Japan. History Who-ya Extended is a Japanese music group, whose main member is the vocalist Who-ya (w
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 0x75a7cb40e00c60ea63fabd87cdfd808db1910a6dcc3254e891b0241ef17bf727. 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/f9ef1152-0d98-4851-807f-41e475d74af8.json and https://artists.proofprofile.net/proofs/artist/f9ef1152-0d98-4851-807f-41e475d74af8.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 0x0cb8cd23d3802e0cc6ad5ec1353be7bf85305d3fa2feeaf792a75337b5bb7ef3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/JPU902000257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55effa8c417a36850e56a414315e9ff194aa98c072caa9b870da046e8f94242c. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/JPU902000578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01005e1177c66013d8a72184cb179df2b11ffd3ab02d02cd07838cf31a78e7fc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/JPU902000579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c93cf701e97b8a2e316b4663f064c57838e9738b663bd70dac2416636d813f9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JPU902000580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf738d633769143bb15f8e15c701240968e64f811dc35aeb49f857a5bcbea2973. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T23:01:55Z), 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/JPU902000581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316b841b73dabb1e5dd92763111f1ef88af3c8765833b1c93e6a574f61533d0f. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPU902000582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ab626624e4ae914ff5e79820b86c1041a7f4e2341c036d6e257e80e64a6a65. 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/JPU902003457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c2de2fea692bbf396221fc575d2e34089dd17c78137686044115f9428d43459. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/JPU902003458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc59aa56a59a687a9d7719b20f5dc8008ecd3aeb7993f13821da1f6a10649f88e. 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/JPU982100182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4b5da58d0dfca77c751efc02979d5bfb5b646312258a9bb22f0a78625053c92. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPU902101393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe24c3b0016b7ed112661749e8c7305e28fb6a76b3bed4e7e5c608916e1168ba7. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/JPU902101395.
Icy Ivy (Coveted Eden MIX) - SACRA BEATS Singles
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b81df597c501b9f4eca64db1bf7ccaf909bd8c5c57b07467f496a279df1bc0. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:23:21Z), 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/JPU902104502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02be1d544aa1a20acffa3a92eb7f6c00762e7d8fc10059ea1370a5c2a73b2d9c. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:48:50Z), 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/JPU902104501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b81df597c501b9f4eca64db1bf7ccaf909bd8c5c57b07467f496a279df1bc0. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPU902104502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2472fa9753fd00d8fb22a7edc387dcf80f473ebbc08012b26ded1d79029e4acf. 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/JPU902104503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7477efb2c4c153ab31f1946660e3171b88d5846dccfc941bd7da6b41693d280. 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/JPU902101394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b861d0a8a46cb063e13fa3b2d74332948a1a4874ff37a9b997c073e21f4733. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPU902104504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a688548c8a3243a022d2505739fc752a525f6d8e1c6f3e6598feb844c86d88. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/JPU902104302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3bef5587a6383e33ec2963879b0b4226a6173ad1100cbb0e19ad767e6c82ef7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPU902201616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e383f7284701bc03cee6a52d102d71e09d56f32e75fc6b77392c64db0dc56f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:09:07Z), 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/JPU902201618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8a3b8f96ae15487d215d22d1940e46dd903660877adbee3fb58581fa721216b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:43:56Z), 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/JPU902302852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42ba89d6170029d8ee5a9f7f6625942fb11fd674af333e59f7f9c757912d3932. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPU902302461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa10a54a22841dcccadb51fe212e2fe2e41873ddc5dc1ff296e4833ada647bb8. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/JPU902303958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e92031fe1ba256d22dc78db0ccce563ff3351c92ff0998ffde916912d480f74. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/JPU902304320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570da5ecfec64880d78a08fd5ded4bbb5c0a8881c1f976be7364d9430c1194f8. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/JPU902403755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac3b052c30bf891bccb2dc2dab8f36b039d1c26b6cdc987dfc7fcd7a984cc530. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/JPU902501180.