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 0xde8d1c4c02f0ecba376395c559beaf4bb73b62eae9fed43934bbcc01b0c7d0be. 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/19053224-b973-42dc-9839-47667cf4f9a4.json and https://artists.proofprofile.net/proofs/artist/19053224-b973-42dc-9839-47667cf4f9a4.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 0x1d1850cfc7ea4b2f8200e3408f9601314618b25acba1017b5dc57ae154a5bb2b. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZZ762458714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a3264259f1bc7b5d43fc1efa70c039ebe802961e39adb73097521a49ab641f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USCGH1511744.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d3a58ffaa97ca223379805df8c69ba82c090843ff578500cb969147b7028c3. 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/USCGH1511745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53b6e1142ce13cfe243063afe8e707c9d25a8b28b6fedc5dd21dbf5f24d77cb0. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/USCGH1511754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a58977805ba64f80c0cbcfd94b8ce6b51ed6148c2a0033aae77a225d7f52c3. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZHN32089748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2fd9a3333d208ed4efb35787d0deca1390e5317cce4d152f114538197253812. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZHN42051096.
Blue (Tarragone Street Concert With Looper)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x599c179163dec875d573223dc4ac294e0edffd32d8f18e1188dff6e655c67574. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZHNA2051706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43d1990b45d70621128a0dfe066091863f4d0e88e5502707769fc6edcfc371f6. 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/QZK6H2011646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3043504f6e934d13dcb75b0294b0c658c8fd87b44f08487a8805d4f7ca0a47. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZK6G2089102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ee01d21753756b4e730142e624625dec608df3e095768d8e3ceff9a6b99fa7e. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZMEM2018609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98ab8c67c9ea655e5650d1dbd1ef8bddfd734580fdbb95f833ae4b2e248e0929. Chain 2 (Bitcoin): anchored in block 957735 (2026-07-12T17:47:43Z), 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/QZMEM2090904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd56a067161141660da0da5bf8780fd5fdd4f544b7f379a170fb291eacd45191a. 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/QZNWR2088497.
Circles LIVE on the street in Bergedorf (Live)
Circles LIVE on the street in Bergedorf - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc653696321d78afc5a654582e43521e787f27c2cedd0c6d624d5fc8dbd6167. 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/QZNWU2037771.
New Year COVID Blues FACEBOOK LIVE Improv (Live)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe636610aef20261b6eb6542de7843fb7200f7a9c752d6749339a252853546e38. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZFZ42137759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3ab014f4d29eea55aefdd9ab6153fa3a10d44999e8297febd03c702895b3188. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/QZHN32199038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee109ab430e67d7c62ac6da26c6b17f794c130aa53da7efd9f84d9548a387af. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/QZHN32199040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eb928cdedb32e797fac9e9ac2dc6155ad8e14139f14581ec0d5eee91f5c14b3. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/QZNWZ2109591.
You Don't Know on the promenade in Almeria (Live)
You Don't Know on the promenade in Almeria - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeada2bed50ab59fc2e489d6d1ddf3c176346351af9ee31f3fa8a8e126b5b493. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZTAU2152055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4fc6f4cd1e8c5ad40750ab0217923df2980063b713b5392ac828fa99570243. Chain 2 (Bitcoin): anchored in block 958708 (2026-07-19T09:08:25Z), 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/QZES52241729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55c56eea24fb979e39a2ce4c79253db29bec51b7a435a7978f065e70a506ddc. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QZWFL2300024.
Funky Facebook Live Improv ('Thank you for watching us') - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3feb8e84681e4112ba0264c5bf523647915edf2bedb2259d4f12448e0a206f13. 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/QZWFL2300025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20e9d0f7798d0a7c1055f700ef9f105982dae01b5ad1cd5bd0561e8d82c7f77e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZES52140958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82d40abd443660c05450c5f3a8927d315f723d2ff58f34bcdaebfec394f79b3. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/QZHN62390148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0862e73a0d3097d984dc29c083b7912fc4989073b1a163d9325e9b44e1de0f8d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZES92120185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d016d4fe7a69ad84532275abc601c2fcda3c49cb4ff07223843086ec27a6023. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZHN72379199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578966f483631f2d7bdcb520c44a898bef0ddd8ca5ed5a441ebb8becee33b20b. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/QZWFL2300027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec07a3aafa310e8f74cef5565fab8fc72b3a93e749e1f0a2f24ce84220a058ce. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZWFN2382961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa0341c6cf4236f13425ed7372471cdcd3f6e225dce936014a73630d6f6c1a37. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/QZWFN2382962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156321704cbebfa5d0af8f6ce0eb0d2d3fc254204e87fd6c580fff35d344c7b0. 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/QZMEM2385813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x386de0f6d203bde4d8c5e5e624c34d1879ef578fffdd92df6089e1c5d99b91d1. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZWFN2382964.
You Can't Always Get What You Want - Live
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x124527f71f3230c0db687935d96b598e4f72c25e5ce87dc1f20a415d8813bf41. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZWFN2382966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x539d81557208945b8ec064fc2a46f1a5f3089c74dca59b50eef74c4a358ce8b7. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZWFN2382969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x511adbfdb03a1ebe067b5c2eb330816479e8ac2c9edd1bc6dde0853320d85cea. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/QZZ7M2441026.
The Crumbling of The Berlin Wall (Busking in Tripoli, 1 Nov ‘24)
The Crumbling of The Berlin Wall - Busking in Tripoli, 1 Nov ‘24
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf200f9c8db8b368c136e6503bc0dddf00211272bc0f37cb67af1fb42f177c7. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QZZ7V2472346.
Get Your Groove On (Busking in Trikala 12nov24)
Shake Your Hips (Busking in Marseille 12 Oct ‘24)
Shake Your Hips - Busking in Marseille 12 Oct ‘24
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503f7afdee9df908c27ad28697b09a1c2ec53897569adbe943ac7f255ef03a7b. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/QZDA42550794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5839de89beb73f3d33a0dea89be8daaf1c4949c6d382aaa3870398def34c6f65. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/QZMEM2527749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbcd502a28356869061c168ce4f575081bdd0b06458017e01d3a73bf69ddb977. Chain 2 (Bitcoin): anchored in block 957775 (2026-07-13T00:04:23Z), 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/QZTAY2554912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce999ed52a8cbc046e51791efd1d3145e27d58db83578859a10b2e3b41a027d8. 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/QZTAX2558500.