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 0x76b39c75f693f0ed3da11a9cba25f978aef8e05818a060b7c04fb5e25e800ad1. Chain 2 (Bitcoin): anchored in block 954062 (2026-06-17T07:39:10Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/458058cd-f02f-424e-b992-8f69e896a839.json and https://artists.proofprofile.net/proofs/artist/458058cd-f02f-424e-b992-8f69e896a839.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Now - Tube & Berger, Modul Kollektiv Remix
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 0x72d2844ee65de40355c56ad2d62cbda18db8aee704e1a71d46889b682d26c733. 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/DEW872204007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61ac02a9a8b65127fd40cbcd6238ec0c34b0f87ce351b319a9acbd3fefdcc46e. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/DEW872303226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf27bf327589a274c17ecdc2d291f78118883f54a61dd42803393cf8df5ec53. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/DEW872303227.
We Are Katermukke: Modul Kollektiv & Gespona (DJ Mix)
Moby Dick - Iorie & Madmotormiquel Remix (Mixed)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bf4f3f9ddd1991865826964e7ab5d1ad6d5ea2544e50abc7a21a24d5b7a5a93. 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/DESH42100053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7511b31eca99bbe05847f17b3c49a49850eed66973e564d1fd2f1e8ec550dd43. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DESH42100054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb81137c27c0ae34101fd6b2705c324585d737eaa80e424558623efe82694bee. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/DESH42200102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x152251d36cdc03607dd78a3c229005e9f94a073873e85a4d38b4f1d1f3a4db76. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DESH42100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62d19af19a61d04cd025b49ea3845fcc2b5ba066c0dcbac068fb1ee044593754. 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/DECL81500162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75056772881b96d44fc04b0572c1b4fe0d9e4ec4029ae53a8ca64ced4fc37013. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/DEW871606664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741a900d4e9d62ac35db8c8cc9b79ba5987a536bbde011a1bbf1ffe8329039be. 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/DESH42200108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3aacd007aaa7dd0a4f9116c60cf0d88e0ea7da1ba967da30fb83450fee06d2e1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DECL81800432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a96d7bd3d03c80a161829992ed2a4fbf1ad91eb98777850fd27b33ab9dbb96. 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/DEPI82513454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f4344b826080c19001f8590feb2c947f238bf484593c118000155cfb70a4a7. 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/DEPI82513455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4226cb687e47161915d965f184cdd1668146182b135548225210c583fcc75df0. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/ITZN72500034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5423c420c05a1087e00e67eb512396ec8f4e72fb3a0051054f5cb093d2b9359e. 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/ITZN72500035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2447531cf13c8376aa9863838843ef03ce9944b5ed6df813f5a832387c923628. 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/DEW871607598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3618945f9cdfe9fc0c22e0d415dad23e480914b9514cfb4e4b6dc29673c01c26. 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/DEW871506913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346c0cbfb6de43128a6d73140c5b5fa3d279f5d44c0070449dabd557e970623b. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/DECL81700368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f05a270802a27e1a9548b72a03b094fe573afe86d73afd8257f3b145b6e323. 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/DECL81700371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24071c5dde4c430ef0cdb5c13ff66e143087fc224e6a06a43d4b651d70016bb3. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/DEY470939961.
Get Up (Everybody) - [Parade Mix] [Harry Romero Edit] [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e6c5f586891d1b498ff974038b428ca561c9f0d3b686a1b640aa72273da14e1. 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/USNRS2141091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75233555e9afd8399b9208c62d0a510cdf779fdb3a525de60cff3561435875ab. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/USNRS2141094.
Madre (feat. La Nena) - [Luciano Remix] [Mixed]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e70148f26ff2b1507ae61e6d77c715382f31e6bf557d780ad9216d7fde8e349. 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/USNRS2141098.
Body Language - Danniel Selfmade Dub Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df5d4eb9e87e0e1e838d35253c6852dd871d9923d79411c5d6d46a7721da5a4. Chain 2 (Bitcoin): anchored in block 960175 (2026-07-30T00:16:15Z), 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/DEW871901183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934a8fdcb63e0101d8cd30faa067620d53880fb3196d757c5a10b5bef2b89205. 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/DECL81500231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4be5db0ea6eb90c4ba74ca42c949ef5e534e8f4adf9787619441c804aef185. 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/USNRS2038954.
Berlin Summer 2019 (My Favourite Electronic Festival Hits)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84000ed6000c66173dd2035cc73fb0fa74a5e35bfb82e68891a22b7d1a3a10ef. 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/NLHR21600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c018fa398557c1ac8ab54663832e205b8c998042b489689937db6815cac2891. 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/USW691500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04f064cfe52ad784814f5f21b02b021124c7a617a2e402843c94ab2a9616b588. 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/DEW872004331.