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 0x9a0910d2f1c80784acd75bfd0e06439977d559e6020b6de92cb08086220286e7. 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/974469ed-d0e2-426d-aa0d-d3147d04f9bd.json and https://artists.proofprofile.net/proofs/artist/974469ed-d0e2-426d-aa0d-d3147d04f9bd.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 0x0275d64aac4e8d5591c54c0b0fe97916fd1b1d63a4f658a67c42fa7af7e6294e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/DEQ022284547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc941324010ea6ab2dd703903143a79a716ee403abcbd1d9f485ebb8d925f9658. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEQ022381311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0151864ca9b2ed8e8178e348674da9353728434b4c836c39875b80e2f2ca82. 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/FRX452423826.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71563474f86af053c07ffade6f4691a462ccf79a1e8bde251b4be96f1a3e5837. 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/FRX452423099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0e629e821c39ac5729de956bb21a91b1d771149b008f173fb87af206b33e9c6. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/FRX452423827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeb9f9a4f59103838d42c1cd36f8073d54fd1d39d4ae27a7cdd0c73b5cf9e4e2. Chain 2 (Bitcoin): anchored in block 960259 (2026-07-30T12:51:24Z), 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/DGA072317639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed4c274986ba6f6bf0f9256800793de3caa6374bb5a057e70efa329a771d7fa. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/DEQ022390192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67f58d195f39c01b0f038f9aabc57560cc345543c7270714e8382b5404f065dc. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/DEQ022382618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378d51012fd506dcf2bd92c69355c11cfc064d94f608bab4c26389369522ec7e. 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/DGA0M2326314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2748f3e5e092c84af1555554b754b959e24739dce3bdfed90bbeb14f6e60061e. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DGA082379779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f159d0f85f9cc354e8a1a867c1b7c87c7017831bafe906a2e41aa2e04b2adb. 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/DEQ022391085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2095b1ecdc4638ff9b873a45a41174b0f67c9955287015c0ea9815fabc723dab. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/DEQ022380726.
Far Away From Everything (Bastelbande Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f0f364fea5af1fb33d878bc94559f230cf34edd5c7f520eb7f896dde9193d7. 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/DEQ022384411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378d51012fd506dcf2bd92c69355c11cfc064d94f608bab4c26389369522ec7e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA0M2326314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x534b4ceb4ad25ae88bb8634bb51e3fe0e427127e2c9ba07b5ff9774e66880a48. 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/QM3DF2203383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc941324010ea6ab2dd703903143a79a716ee403abcbd1d9f485ebb8d925f9658. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/DEQ022381311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2095b1ecdc4638ff9b873a45a41174b0f67c9955287015c0ea9815fabc723dab. 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/DEQ022380726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed4c274986ba6f6bf0f9256800793de3caa6374bb5a057e70efa329a771d7fa. 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/DEQ022390192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0275d64aac4e8d5591c54c0b0fe97916fd1b1d63a4f658a67c42fa7af7e6294e. 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/DEQ022284547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaed4c274986ba6f6bf0f9256800793de3caa6374bb5a057e70efa329a771d7fa. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/DEQ022390192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76a1d1b1fa77c60dc03fe86bea02e20ae796f3cc093c239874d5e6ce4f78a11. 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/USANG2220854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf6517c4e9f162b20396e7c810885e33f7cd97701ab36d4296a87b1d544bab4d. 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/DEQ022112272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb62f716e620a02a31c9d99ce2ccafb5aa59d1b62d49c9fed40e07cf38b369b21. 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/DEQ022110042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x875b3de4db47c66f59ab56b18e8caaf01d91c0c2c2520cb00314253fa75363f6. 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/DEQ022004031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6d67561823ea580100f88c28d95f1ee05b55778fc35acf299b6565709c83a1. 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/US3DF2019118.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac9ce8c0b4a4e56337cc689406ca322bb74c5c4031d61dec7b060bb3da70791. 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/US3DF2019124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd846467020f7d370a974253939080ab2ea46fd1f6e221f579b82bfbdb56c36d2. 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/US3DF2009849.