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 0x6848bce1b1e2b847f6a23cb8061c7276840d0b38264d895c42f182c33dc1e976. 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/160456e4-2e4e-46f0-9e48-637ef7a7a6c4.json and https://artists.proofprofile.net/proofs/artist/160456e4-2e4e-46f0-9e48-637ef7a7a6c4.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 0x00d4e7a97504a4041400c9fa0f3bc51979bbfd2bbdbade45fbdd769378847cbd. 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/USY1R1966205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bfce1069e59ba651e06cf11680ddf7cbd90cabdac431d3de86aef26fc1da300. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/USY1R1966208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedecc20eb9826ebbd81bbb60f38e6ff2b8b83bd205cb0a43c5e8fab22522c900. Chain 2 (Bitcoin): anchored in block 958567 (2026-07-18T15:22:40Z), 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/USY1R1966209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc98886b4ffdd990ac8efa73edc91d442415107f600004502c1f3a566e6770f14. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USY1R1966211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x812bda5b4941314839bd2597f4e82e1f292d53e02a10d0938138854d9aea9acc. 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/USY1R1966212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17bc8d82b0114d12c186d645af76d2009402d2c1fa9e2aa5c7ebc8db3f9f1c3c. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USY1R1966220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb318bb20891a78414c50395930d8a88dc56fbd8bbe6147af7f0b07de93d177e8. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USY1R1966223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfc9d8b40258c96aee3c95c31e172787d31763efb74452a2592386c9ff177194. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USY1R1966225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3cc176b069872af1bfd1bc110c9e6c3b4a4282ceddf8297f7108f5a16773333. 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/USY1R1966226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774f15e2b2ce941b666aa9fbb375adfe14b6bbc88981785d83046ec50a3112ee. 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/USY1R1966227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf228b021647b492054084bbcd7e2d095efd733f2a5f06b38f399547567f2c04b. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USY1R1966228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab288e5404488dfd5be95f76c50e204a8bb4cc6e924cdffcf6abf4af720b396. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USD8D2104002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311689e6769633245f3985925d752c17e16bbb4c937134435e27b185ded8f5bb. 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/USD8D2104004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fa90c23d0ec683f02c39ca22e4ed1a9efe16fe621903cdcf76f74f7fd5dc3fd. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/USD8D2104007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40bbce1070fa4824f09854caee08078191c9a4460d66421800d1b8d5c50c9a6. 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/USD8D2104008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ce6d1124fefc9bd3d4c6ca45ee0207634feac945937595405c8c4cde427a430. 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/USD8D2205004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6373ff13644c08c97834a56b10cd4a7967fd572ab7a7030d0e6cbbcec491a919. 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/USD8D2205006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0127956914660509955a7f92949656a0f6faae2627f261fb63c85b11a280e0. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/USD8D2205007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2e5894a640c86bbb526072eb159069b167d75e683f6601b720d683f0567f909. Chain 2 (Bitcoin): anchored in block 958571 (2026-07-18T15:39:25Z), 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/USD8D2205008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03d32ab6bbc20753041398b9e6c2a63ad967bea56fe4cd2b7317df5abdaf8d6e. 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/USD8D2205009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bc8366dcb1874190117ba90e316f83a4a8ba9814953abaf9cc117c21f9b732. 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/USD8D2205010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb314cc2678266100a5777d578151ce0649bb3a9bb7ce093e04659f65f3e175b. Chain 2 (Bitcoin): anchored in block 958812 (2026-07-20T03:24:09Z), 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/USD8D2205013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d200a4b2a1d7d637b6ec198799a43d1af3a5a9cdd29061a071395fd563246a. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/USD8D2205014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87bd3484c4ccefa70823fb55081d4dbd4d1173c37b6ec686f411b406bafda39f. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T05:30:12Z), 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/USD8D2205015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe3202044fdff74b6b5d3a513d11219d2d19ea4f94bdefdcde81bf637241759f. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T11:08:30Z), 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/USD8D2205016.
Always It's You/You Only Have Your Soul (Lagniappe Session)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39c65723d03bce1b6e36f7f63ffb5a816801bf41426d30ee33fae7e6f08c8368. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USD8D2284001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73ca908cae60da0ac2459ac8d702eb474bd990f3667053d85d4d4aa48366ed9. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USD8D2315012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8994ffb0f7e4f9e75351d1a5a7f49a3f377cf4e802164b410de327f9e7487093. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USD8D2315003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b42c453076758c3ba418b05e81c331213afa83b20095546fd74b415ae72ddf. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USD8D2315010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4a9e3d0edcf19c76d8934d08a1dedd30e4df66c42f2399d8e714268641266e. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/USD8D2315009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9dcacbc84ba2eddebe28362f35589f205259f7b9d630f31911525c18c07ca7. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USD8D2315011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad18adfb0519af7912ae9da60001682ad240234fdbe91929e82395331c2b3431. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/USD8D2315013.
Highway Butterfly: The Songs of Neal Casal
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdda9944722a18803d0607c8a670ce35dbc98f41cf09fff3a9190d0a36c9a36a4. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/USME32100253.