thumb|Bulgarian kaval in key of D (Re), Mopane wood, Pewter inlay - Wedding style kaval, made in 2012 by master craftsman Radoslav Paskalev, Virginia, USA The kaval is a chromatic end-blown oblique fl
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 0xa4168fe291ec43709b6905f3d8e8a723639849bd43ca7095877708bc138ede6d. 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/836bbb52-83a3-4c65-9908-29678696c54e.json and https://artists.proofprofile.net/proofs/artist/836bbb52-83a3-4c65-9908-29678696c54e.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 0x2a39b48fcee5d84cf43050430f4a8b7ea2b445b9b3168cdcebe22301a99b3ff4. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/QM8DG2417194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95825467466765abdfda3aaf2fb41a22dbfa5692346209922309ca402f1fcebd. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBWUL2450537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa97aae8684b736cf965e841a1213cf674d276a0d340f5359f36282cdfcdd7239. 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/GBWUL2450464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dac27bb3065dd2116bc9ffd83303cf3616e0a730e779ff81984d27cebed67bc. 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/GBKQU2378449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698f403a47a354738a905503a02745f644586f983b933ba03f3c2fb1ab89face. 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/QM42K2392975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f80d6b26da94e9f0557fa03a7388aa844ea99370859d02a62363a8f7e9bf971. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CA5KR2372020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b98726a61bcd426758939fdee9cd12856f32a8e9797aef9a317afe9b6d1c3b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CA5KR2372400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc141a8574e93e6f017ee131117eaa17785d3a80971acad432344576b4d9be740. 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/CA5KR2372401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64184d7bf3fe99f21bcc47313ad14b3b6fdcf23dc0cef1e21a03d6f57124ad36. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/CA5KR2372404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x751364bdeb8bed9d3981f3d46f3261eebbbe697c070dfdb9552195885ea766f1. 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/CA5KR2372405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4d98bfcff6b95ab4541bc425a0de5b9170160fdd1ad567cdfaeda5fa4ebdaed. 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/CA5KR2372406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb38ceb0ad32d641b130c44b1ede78081676eb8d4fea9ef7700628ed5ea3b7a3c. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CA5KR2372012.
Don't Wake Me Up (Bizo & Dr. Ushūu Remix)
Don't Wake Me Up - Bizo & Dr. Ushūu Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44f4fc8929e2fd151054591546fb7629058d4c6a88ac9470efe7fc9dff7822aa. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CA5KR2372001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e34411186fcfce5484069011d250d9651779c29aa7eff4941b23d6f41616556. 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/CA5KR2301331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6e45e50e5a3ed59ee4eb8f332a34e9c3600796abe6630fedca21c6c3786e2fe. 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/CA5KR2301831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x601844fd90fcb8f1a945ad99c2ba8a94c66f77d3198a46c6376ad7a2035ce58d. 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/CA5KR2301832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f121cb2a2a219a9d58514c2751ebb9b5bc94f566cb8eb68e2103e9b9ef94e29. 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/CA5KR2301833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5814310248f8422862380a5e81710243846acc0411baccae6f0a99ae96fa219. Chain 2 (Bitcoin): anchored in block 957020 (2026-07-07T09:18:01Z), 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/CA5KR2301834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d0b043026236f454b48364497fb2231c4b963c3d37f9bf46e8408956e86243. 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/CA5KR2270994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558c75a3bea6609f19c53d2b7f4601a2ccf762c45becaac9359ed7c6fcbc19e9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZS662236194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c4f021e55bacd57f5257f29421694e9f80cf6c7a822ee5b90fce41374a7935. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/CA5KR2240672.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbdb04a6331e5741515667e0a1caf907565a83e9b1941a82f3b1b3d053055f6. 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/USLZJ2227656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0d127fb7ec1c1ff335980c8b1350ec754d50796bb9936e2ea7d224b927d461. 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/CA5KR2217545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004626bc0583551d159fca579bc29573762dd2f960eb6ce1b4d6ee6770609412. 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/CA5KR2201233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18b232684f5fc808153515f4bb48e585cd41b5449eaf212513e4c99289251a0b. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBLV62106436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fbb2b49f51c0011fb32624033cc8628a2bc7ebcc5f28a1d2cf7c2e1b9b081f. 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/QMD7U2103009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbaf8c1e429a241781c5c6706f3c9bdf5c138067c2adf15eba52adc70827c36e. 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/QZS662129347.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf20e959cefebd8d1980273b29e8feb6b05c1fa128f7933fd77e542442c2e535f. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/QMD7U2102036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f039bfcf59f78f2ed0710fafdce2942286a15dcabddd2d0743b6d827d31937b. 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/USLZJ2124152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x753b13dc8367ba485a6b53879c2124162234966b578deab365272df3ddb3e642. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/CA5KR2138514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8dcb8e5595a6e68999c89230248135f0b46760b1bfd6ee8f417a3f3071cb64a. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZMHP2000025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd82fc7de740981afb7599a1e227585857f2196109877586fabaac9a696f44626. 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/QZMHN2019774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b3d310a5d97259b69800730af69af74e23e965350fa08d02fa113d78511a54e. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/CA5KR2117795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c879d04285aaf8ae319f53aa2cf0996bb56c410e1ce97703dc1c5df0a317d8e. 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/QZMHK2068571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99c9f455c53af702cf293386a53ca3ef698baf3d0765f2244caa2e62dce8787. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/CA5KR2053735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c10879dd063b9b37f74ee02fd21a69044e94ec6fecb1a769d4904a0a1e2400d. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/CA5KR2053737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e2b0cf1344438f4a375a1a5db4822d6fe61e36e11cd8db8307726125bc6c98. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/CA5KR2053738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c4c3370a351b548b3e7da70ecf6774837b409f308db6a5522585b0db434531a. 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/CA5KR2053739.