Asonance is a Czech folk band established in 1976. They mainly play Scottish and Irish folk songs. History Asonance was founded at Jan Neruda Grammar School in Prague, Czechoslovakia, in late 1976. E
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 0x967f0edaefb9ab1182884f2a7a0d6bd8b67f4479299970ab4241730035ddb780. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/48aae92f-bf82-4b59-bac1-fbdd5a1b6ed9.json and https://artists.proofprofile.net/proofs/artist/48aae92f-bf82-4b59-bac1-fbdd5a1b6ed9.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 0xa24f8c64cfd3c243a0deb2cbe44df64d01520156bf186ae3ff9e065815b168f8. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/QZDA81967493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d53d6566aad01f6e69a344fc149295ee140d8cfefa4633bb2ded1d297ed82c. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/QZDA81967494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x666131a5134ce6ab5a64b53028168a0a8f35f96928184b6d9358166099506836. 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/QZDA81967497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de45d5887b7f7a9566fe144a1fd12adda3fd3877321eb121db85bb796d44105. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QZDA81967498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x970fc212de157c0338320cc681c3d386f38e97bc8631fc6e82e52b9268feae86. 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/QZDA81967504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdde38913880683baf5be43e70ec3da9084d1479a520efe3b41b52d20e83c53. 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/QZDA81940983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0bade44087544cf64c91f566a30ef15807f36cae588017bc14ce412affc6a7b. 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/QZDA81940988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0688f2f5ce25ca11e8f26bdd7c3ddeae326e8b76074a2ef4170d87223b12c328. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZDA81940994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab283a7fa96ff4c8064c59dab237c813321b0412400a30504d6ea325a2a3b937. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZDA81940996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b56f6d2d416427294f79298b288ac9135a8be4a8b8cdb8d993362e53d5efda3. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T20:19:31Z), 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/QZES51932902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1fe4211c4aaa8f9a60caa117bb615409d6996aa8e7fbb2f3eec25c4e753e380. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/QZES71954421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe5a4eab876d8e85d54c0b98f7f054f09a4a22ce8a09f95c9bbb1c22bad4edce. 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/QZES71954422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a81b367e2f6cf138be10cee3d9cadf5879a29c49da59d6aee4053179817d34c. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/QZES71954424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc997feabfefda1afd2c33d27a751b37d49ec50e71d5185efc95156d8f6151bd9. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/QZES71954428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc6d7bca8430d310dd40e46668968eb54ab03deb1587e2a3594ebf6df895d56. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/QZDA81988654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf288f8989ccdc7a941a4116216f2d6fd7196fd6a152221be30d4749ef1df6a65. 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/QZDA81988655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50b2e0883b3042c94cdbbf0433e305523fe4a260d629143af255558d5907dda. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T19:48:03Z), 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/QZDA81988658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86bee55703c335dd69be2fe25512b94a1bfae164a837b863c334512c6912294. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDA81927929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1931c6a8426ee747909d3091994c75b66a3ce7f584d8d34e481cbda9a9ca21e8. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/QZDA81927932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f45a7b09856fadca893a87d4ac61c5231ed788614be4c911e7f7e67ddc81c5. Chain 2 (Bitcoin): anchored in block 959008 (2026-07-21T13:14:05Z), 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/QZDA81927933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd514de73dcf8bb2751db1cf89bfe602baf8542700178a9984f3105e0ac610290. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QZDA81927936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0afaaa99baac32c4c4c754e03ca4d901811f8d33423555f4e510d8961688a7dd. 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/QZDA81927941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bc2a162603a5e2f49766f5ad307a557276b17157b732b43f265013a0585af9f. 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/QZDA81927942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd463960f1cc59b2cda80273b7ab3a9d311fc00de24d67b3fe90eadcd3653b3cc. 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/QZDA81986875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x493d204afa4b2bc09623dfde06d78bfc8edf5256d8f91ecedc37aa1b041382b8. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/CZL522500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2eb94aed3e34b4653053b5bdc974ab47761354dd84c1a44521b287969dda074. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CZL522500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x912e9f32ccc5cceb9a2c540a167aa5cfac195b6a42e785783298d840d1d8621a. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/CZL522500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa84fb490472314b2c8d674e5bb5b7d4af9a328c357ad371b4fbef4b4264bb239. 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/CZL522500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf25a6db71be7053e86c63d2a18234165f625317e92b56d6a89ab15b7b4f4e0d0. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/CZL521400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x952c38b9d1852eb4c0d22a14e3f053c1d41f1629f28583bbe0524998623eb8e6. Chain 2 (Bitcoin): anchored in block 959134 (2026-07-22T13:34:27Z), 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/CZL521400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc49448f70bae7e7dbc8a00a37cd153f81686ddc00f7ec70b87af2a31d9fe4461. 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/CZL521400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21873bf1dd29dcb93d54a3d32b1a4d2b683f62e5103f1b13c7139ea43ecc1ca2. 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/QZFYW2005562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7987bb6b3d082a6f851601fdc2fc8df15e00c8a42791b7799961a45501d7b0a8. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/CZL522400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffe8423d12d4fac72bbd040b25d35db28a72fcbda9188b3ad5ea34373160409. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/CZL522400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7987bb6b3d082a6f851601fdc2fc8df15e00c8a42791b7799961a45501d7b0a8. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/CZL522400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f60ed5d644d2c67052fe2b5ad940734b49457985dd94060ad4c0def0422a77. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/CZL522400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cec5214e919993ade9ee204898d37e5341d8791f9cfec3a8555b88a0219628. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/CZL522400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ffe8423d12d4fac72bbd040b25d35db28a72fcbda9188b3ad5ea34373160409. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/CZL522400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1f8dd9b8b10defe4c7bbcf28c0f0a2e3a455464cc22f8e7bfa071513cb97a9. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/CZL522400007.