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 0x4b2a4ec6e6948001b9f04c2f5c85c7afbdff1f38ae1c1b1984bfdb0c208619f8. 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/1c8ab36c-7a9f-4907-80d1-5a0023ab455a.json and https://artists.proofprofile.net/proofs/artist/1c8ab36c-7a9f-4907-80d1-5a0023ab455a.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 0xcd62ed3924a0251ca2ce6af27c88baac7bc60436aba3fb79ab5bc2f83a1579e0. 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/CH0011800596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db9f7c303c14a758fa1642b415c18bd7efec678805304cad1d99da1fa7fa16d. 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/CH0011800601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34b4fa743bcf227f2a0eb370e49bef1453cc1c059cea598112ae531e3028d25a. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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/CH0011800602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ac4c8d3f698a197795a2d8fc2f7d6ad2208d3e4ab05cda92d947b99d851b89. 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/CH0011800610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5f4d1da56dca367e3163dacdd65b6f5a4ce906fe82ad8dbe0fd225bdef0322. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T13:52:01Z), 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/CH0011800623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc112ca0b9dafe36f8141492fd35f8a736428c7011ba98dae0ff04ec8a6d98319. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/CH5170800073.
As isch nid immer alles crazy (feat. Ali de Bengali)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a44178e24eeb12e064520e63d54e6dcced6d1cec5d4d1c55b61cfcff9808e8. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/CH5170800081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb6a6a52ef838387ee94a524f14d2d3d22910b7e20f59f8a37fc6cbdc2295139. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/CH5170800083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1849ed12cb2dbeb662e066e3103ff6370ef39e56401b774bddb689f399939351. 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/CH5170800084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d099600fe816d6374553a8a752b36adcee7410a2ce36832e56e037ff4f25e22. 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/CH5171000372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1ee77e66f6275c6cabcbcdb857c4b7557c9b6fd60afdfae040b0f8acbe7dff0. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CH0011600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2163d6788318d66849e6a5fc87ba3ac74e3b3f83e5e38354984b0a2c91afd98. 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/CH0011600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd010541af75eb437da40f8e65761aa42b0d4cdd30e14fd225a326fa618e69bd0. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/CH0011600008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685d83f5d9befca9382d95019e0a28d0bb1c5a0f59d31247a29f7a72a15503a6. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/CH7811714169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e33f07fd52f4b81f898946add0082e53915b7dd1cd9e62f40f9c34e16996183. 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/CHA301712029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4043de7d93a2f8b37fad29a9a7cef6b801f836a4d507f12693d72b54d1919a6. 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/CH7812179887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d3ecf53bade9e2d6db98bbb6146b2f6205758535c6ebaa75ce9c18abc98bcf8. 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/CH7812179892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd43352f017132d36dc7fd22a925c53dd869f03226614f5e822f7adf6351e953. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CH6451507183.