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 0xbc7c473b203759c7823d68879a7f42bb3ee5b890c287a90e671d000e398c68fc. 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/4d7e53a8-9f60-4185-acb4-e8d6d41a9d7d.json and https://artists.proofprofile.net/proofs/artist/4d7e53a8-9f60-4185-acb4-e8d6d41a9d7d.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 0x25c449c22630c8cfcee88556012bbf59470247f24b7c0fc91467e04343ce4403. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/GBKPL1359069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfda7e49d0d08a73ab8362a461e9e8d13c1d438ce9af14e1a30d30b690557d230. Chain 2 (Bitcoin): anchored in block 959069 (2026-07-21T22:32:59Z), 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/GBKPL1359070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36f5ed53b64e98d334d85f7f1d2193d0fe2b473505a8955bf1943a9563d6202a. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/GBKPL1359073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebb13b94a53dc911fb7e2c1d7d03b25cdf13b4b0b476b33eddd70b276a7b1377. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QMXQJ1406903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12d7bdf0825b455aecd283126090e90b1235f9694d746a591d54de5f0b3b9f3d. 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/QMXQJ1406904.
Baby lass uns sein b/w Ich bien nicht der Grund
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x213aa84dbb389630f6308189b82cdc418f7333ed085595120933f5ad401e8e62. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/QMXQJ1611001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b72233c1676585549a80463dfabb265b23f821cf63c5c3b4186e1c4e6d7b19. 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/QMXQJ1611006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1501549e5efdaba92e5c6021a3c674e8175f8f1ca4f5b199cc0476ee504f39f1. 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/QMXQJ1611007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9681d443810ad97387b14a6c21f33f64df59807cf59b0a51eb9b09d109f45d3. 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/DEZ651369642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94abb2864e7d77777c339465cd3c73930e8eb9b59ddb228a13c10f4a50b5c145. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/QMXQJ1813703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe6b268c5ee303f2037f360935c80c3e19394934ea7d60ce8e0be192719717d. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/QMXQJ1813704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e553faf20d9cfcb994e6a514eac675e314963e2222a35c0a4b37ac54450bf1. 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/QMXQJ1813705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41e5cc7008684ed582ae2d3f7c97870369ba2da6b39f13e163db3e479f9d72a1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QMXQJ1813706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x242833b5e9f460b76277b36ac92c0eb3d980a18dc83023839d30bb9d3bd4b365. Chain 2 (Bitcoin): anchored in block 956637 (2026-07-04T10:56:23Z), 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/QMXQJ1813708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0426a655f4df309dc0c53491ffbca918353bd29d8a90a345800b5c29737a89aa. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QMXQJ1813710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7716eb65770939a0b1ee3afd55dc783cd282e7c7b095f4ed11ad19c96896162b. 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/QMXQJ1813711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eaeaf35660a881194517a5afc8fe84bf175e96504d2d103b1316c1a721f69ae. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/CH8091901167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcebdcb845ada47bc5a1de9644b8ac8592f612a932442a2427ae73a49dc2748ee. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QMXQJ2418901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ed7c6aa9dec46269183e741ba24f85c0ba55e90a8f0faca7ef15821817a96b. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/QMXQJ2418902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cb5934191f87975cfecd84f985bb1ae3ed3dfeae8b9bf9eadb89381b7a38ffd. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T02:05:55Z), 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/QMXQJ2418903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a645bb1c9e6554e6a829dd2e7cfa09eb604cc47613e50d58283ec23cb60bfd0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QMXQJ2418904.
Liverpool International Festival of Psychedelia Presents PZYK Vol.1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b5def2786471652e92ef67e9fafe94ef1cc2bd2a1f6c2f849ec39fd7e978dfd. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/GB9TP1500334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94abb2864e7d77777c339465cd3c73930e8eb9b59ddb228a13c10f4a50b5c145. 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/QMXQJ1813703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592a95faddf02a1816f1a4ea44f0f4c14b0989578d91fdc7408bd7b18d06059. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/QMDA62479155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ec549c0815da13ef6236124323c67ada9bdb57683fc8d05648c0d130f82446. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/QMDA72467232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6592a95faddf02a1816f1a4ea44f0f4c14b0989578d91fdc7408bd7b18d06059. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMDA62479155.