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 0x7aa9bf153274075737d6d1693618711516786324aa478253d87fcb0eae058ad3. 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/e4e8896f-8652-4e89-aa40-3f7128a5c328.json and https://artists.proofprofile.net/proofs/artist/e4e8896f-8652-4e89-aa40-3f7128a5c328.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ohne Dich (Schlaf' ich Heut' nacht Nicht Ein)
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 0xcf95a0880e9bf82301e568c658e61e53c8617399720831e8b20b84f1e42e33c5. 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/TCAER2094089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7275769571940ee05d8474de8db45658f96c839e28bbb5eb90f6f1c83716c482. 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/TCAET2018527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20dac29ed1eddf52f4e75d59d8e6365d7665176ee9457ecbf10fdf9150985e9e. 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/TCAEU2016973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3855973212950e6baa2b6a45817acb404632faf7a4fad3de0b7b98b492c674c4. 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/TCAEU2085664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x587b6b1e780840ba15360992a151f6d01cfdb7772a6de536ddfabb71cd071ca4. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAEW2030142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c05013add8a0732e0592adc3e137cc6818ff537f96f5fb814b076ee02d99f2. 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/TCAEX2039458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14fd408e1a5ce3d2cb81c3a3d0fb011b294d0dc26e0c43bb586b822194a327af. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCAEX2070644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe48324346e5a45b2fee92a1a45def38564de5307f6b1395fcd057cf3c462a579. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/TCAEY2039180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda9db9dced4a61d45592ef966705577a0b81dd3de1b6e55cd769f935124179f. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/TCAEY2068620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4105c97e4ba3dba7b58f87800dc78eaa076f54c8f08a3d7ceae245047f85574. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/TCAEZ2069648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64323ea9c4ae576fe194a57241fda33df8e4277cad180f06f499d7ffd3bb791d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCAFA2063383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07259ec7ded9b159ed6cf93e481f35bf45d7bc2ce3eb9b703911fecdd7406e82. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAFH2059297.
Verlieben, Verloren, Vergessen, Verzeih'n
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05d4406b3a2e6d1a5e696f83c0386ce58d11c96f5e4090d545481850dd106e4. Chain 2 (Bitcoin): anchored in block 959107 (2026-07-22T07:19:23Z), 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/TCAFJ2103263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e65c4ddbb969c744998286a42fed01ec1f9c68a4705074ceb8f3b387c5965bd. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCAFI2172240.
You're the One That I Want (Deutsche Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0df4a6609f48fe620d8b73e23283a1c427179953bfe8d1912a90a9b8467c34b4. 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/TCAFP2132307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d24af277df1ebde6321c8ec4f215aaeac895b95a69058ce135919b445e62225. 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/TCAFQ2139955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a8896b817e7125d5527b0f3789ed56462dda005312b58553f1b72e7481836e. 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/TCAFU2163632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3231e9cfbe35e7b2ab91679fd94f86496d301d5571fbf2f79cb306363dfd29c. 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/DEUM72204982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaa70da2f3171d00343f69f9bffd528878369c4b6794604e0c64db64209bb0f. 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/TCAGN2209330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2cc1b804f5f1afcfb07219e8753ec8da4e0e3a4803df7b8722f9ef6b916d86. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCAGO2230395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bfef8009305c0d129ffecf5d1734192e352395426bc50ef5c72c3c938966f0. 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/TCAGP2297850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x499eec8826558771a2e5823a874aaf8cec83a983638a252b6f2ce0a720f2190b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/TCAGW2340985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d7751de1c13cafb06e42d3e79af0386059ae4e33559f4b0fe2b764863f2b437. 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/CH7812362503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdf9fa236c587fafb0299fac4831a134bb8a15d9315eb3474d6008fcacca3bd. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCAHS2383978.