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 0x1b94f37ca890b8851c80cfcb800aaf75f2eb292d349dcf581a1e7ff93507a5ef. 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/c8c7ab69-74b5-4aab-8206-fc8112dc12a5.json and https://artists.proofprofile.net/proofs/artist/c8c7ab69-74b5-4aab-8206-fc8112dc12a5.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 0xe12674b13e8e18795e6e7458a086cfb48562feb7f7c580f7d408b3c6bc907c89. 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/DEEP81000842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c197777b6730169917f3b33c32a7f2d32cab7bdd7438d1eaf90c7c343fab8a7. 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/DEEP81000847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65a9ccf8cfaaea1a832b9ce6909280f35ba98b98bacdf904883191f50cc12dbd. 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/DEEP81000849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd76ae6d4ec483fc45adfee8ad1121d857550c5fbf7472774f21963d2b0e7aec. 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/DEEP81000855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d9da1bc24c67ec8f8b39e0ec10db8fe2157395bf4b99a928cad665d02bf2090. 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/DEB630979205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2928b48748f6dd210505b309db02b891a1ff3c94732b210042041ec4b02254cc. 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/DEB630979213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792eef04bc3ae8530233d78c2c79f464b9d1dba5ca163ecf5c9a3e7e7d834ad6. 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/DEB630979229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6632377f279b3b67ec0dc775c73f2f4800a43da0c7a26aea8071b7954aebf574. 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/DEEP80701367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x392ccb7de29d20487d2acf1df02ff59136f21819905dc96c5921fbee042983be. 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/DEEP80701368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f76a8ab6967601b5c40fcd09abd2b316c0b4c8a4077dc77e1c11f31e6442aa. 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/QMAAK2054931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91f4062c469efa2884b28cc410697627fb14f99c4313841abffda21df0e92d6c. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QMAAK2054932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87880d164469e655fa0c324e65e3d3bb0d82aac5585863acbf3fec029110393a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMAAK2054935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20adc74eef2f51f2c7a71178ca0cddf004a45758f577a4f64ca39f6ff405c1c9. 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/DEB639804701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a9a033c1bbec5705bcdad42956606418caa69a65638ba2512dfe013307c7e4e. 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/DEB639804703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e47bd6d0d308082f48176c7b4e3b69c1479a28f66e9b16e04b3a8e9bf271738. 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/DEB639804705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x986c51489051933a45c3802690450a11cc5ed0b37d8306324d9ea215bd179e62. 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/DEB639804706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bdfeb67e53170218db6e453d2e5bc7173744c43a860c5e203375d857c8ea8fa. 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/DEB639804707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45e5e3022e35edeb8384a9d2e7725b08f4c88c89f496bcfba096549fd741ff1d. 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/DEB639804708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7970d601da2865fe8bcc8e9c0b795651d301dfebf6607b10320da938acdcf10. 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/DEB639804709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e2dcfea8f1b3125cd345842662496e15caf17cd6c8fd73ce9463ad5371b64e. 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/DEB639804710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc0b1a3d77edc57dbb3f1b31e6861e5cf421fd5878c928d3eb31ec7c5e57787. 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/DEB639804712.
Best of Country & Western, Vol. 3: Instrumental