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 0xdb3f5b7af6251593fe04d3a978cc74b0d5a82d880e1245e7586e5ba07eecf3b8. 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/d0b21ba4-1faf-4b85-ad63-bd90f77c9a4f.json and https://artists.proofprofile.net/proofs/artist/d0b21ba4-1faf-4b85-ad63-bd90f77c9a4f.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 0x0f577e5080c9bb0c8ec25f0556f02997ff9127303a03ec1c32f8cf261f47d89b. 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/GBLFP2266581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764e24854ee1ea3c3ae45ac5c94b489ca58f4b2a5c37fddac9b0edf39e4605eb. 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/CA5KR2338796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1d5509e6ed555588e66404c548a055cc5c78af315fb72bb1d6d709d0f84b17. 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/QZTV32382598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d68264897f23a780585878ae9cf7e11edb474732ec2f084b7f9f9eb608c3fef. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTV32382601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02aba16972bea0fd25242910fb7a7ca16ed3f85bdbfe73d66897667d9b2fbe9. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTV32382604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25063735bc57d601b07a08bb5cc8f6b8169e62b452580599508f7af8e5d14e6. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZTV32382606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784552feecd8542a06afc16a2dae3658e14b6a2442fca83ea0bc93a18b077f18. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/BEN582300498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81c196ac4ddf67416026caf940624c6211c321525f58413f46d2ff9e5547a694. 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/BEN582300499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6602c1c493d5c24a932f39d6d728388c2d0b264efb14f35675d31449315f5954. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/QZZ8B2395822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c5f005045d29ee8802a2ccb4033cffe9eafe0bae77999474022948f55b430eb. 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/FRDX62403650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ff07668b9cece1b1ee7b2e8f34003f0129b89fe1f2551a56b89acbbdba02dc2. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T20:44:14Z), 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/GBKQU2462377.
Error De Perdedor - Skyblaster Sunrise Mix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3445bad6b876cc81ac6304debc26cf31bb73861bf5ad27ba20a7b05e8bab33a2. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/GBKQU2462378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac5ec3795cc241ffa0f9117f47bd193ba619940d8e17d671146f116db8b4845c. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/BE4JP2400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf65c349eb65d148d648162c164f070c73ddede40035c62541fb7bf998eb7338. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/BE4JP2400026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6117b85c37564eb28b490b4fdb85d7e4745f4eb53ea2225991fce3abb72bfe75. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM6P42478690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bab3cb04ab17b2992acf75079a01a7d1ce84dccd6e077e4991cd644961c3971. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/FRDX62308300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x309dc0d1858c1b1e07a46f522cd4868781761c9b27260e0f190011c3dd2e941b. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/GBLV62319231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7561def3f3599b3395133bccd04ad5f6d9710603a1029fcf4b3a19b19bdbfa80. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBRKQ2224006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e4bee2b5316c512891cee3662ee6c4fc0361454d60fe732c623d91876dc5f1. 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/QZTV32314041.