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 0x905a0fb9e7973b5bbe0f9a439fb3ea40098b02f897175a80748d671340cc20f5. 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/e67c5e2e-2fb0-446a-ab3b-4657740753a6.json and https://artists.proofprofile.net/proofs/artist/e67c5e2e-2fb0-446a-ab3b-4657740753a6.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 0x756e75104d1ea595d61d98b450df1ed82ec176bcaee78e5f8474f8e1e208ef4f. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USL4R0761393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2594122f3dbe44b813dd13eeef65d2b948c7df8b2ea4072b65693319b6841650. 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/USL4R0761394.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3509ec3289596e9e7659a9c0c7d38241619a03c8b7f0e2df795654dc13ee9ed9. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/USL4R0761397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40efd7b68f3acdc4294e9e480e2805a8d688dc83099021dfe7066252de7df6bf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/USL4R0761399.
Baby Music 2 (a solo piano improvisation)
Baby Music 1 (a solo piano improvisation)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75021b9ace31115290d0a0627ac35ec294e7e1b48cc98203a62e05bfb4c53afe. Chain 2 (Bitcoin): anchored in block 957638 (2026-07-12T01:56:41Z), 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/USHM81189724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b343371a94c3f5f6c753926729ed533d19909d9a05a367228d97cbe0967ddbe. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USHM81189735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22350f57efd14fc4f9f9ae3947370c7569a371a6657478562bf8ce07894e972c. Chain 2 (Bitcoin): anchored in block 956396 (2026-07-02T21:01:51Z), 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/USHM91326216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121e65069b88d5f4f2c82b00064d267be86c74ed0050449f91bc51f811cf4470. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/USHM91326224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26f41781ceb18c8c802817b364db9603bbcfea23b522d69b82412bae78f67dfe. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USHM92008381.
Swim to America, Vol. 1 (une rétrospective Stephan Eicher au piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0946e1c740943a135f70f3de435635dcac0d1c5b58427faccceafb4b899c497e. 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/TCAGZ2347334.
Swim to America, Vol. 2 (une rétrospective Stephan Eicher au piano)
Swim to America, Vol. 3 (une rétrospective Stephan Eicher au piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffee1f3729d5319b02369cca0cf1a5b3495ca10a632bbb20f0d27b2586af70d. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/TCAIW2450708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d0138a3a36052f471d42f992f1188b3e7e8181e5335e8fecc4298597c43b7b8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAIW2450715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa66da05fb70722c41abf152d26122d943f60d7155c2899c889709f08ca51b60. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/TCAIW2450733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f6351559f76024c87d1d6648f95aa7bd19dd8d8b5c60881c71dc108208e79b4. 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/TCAIW2450752.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33338f725e0df1f40f4ca8c882197562d83a213eec16df07324149f94149114d. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/TCAJI2581556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74f29e1549ad401adf5c3848b793fc033b33390a854c34c0f71ce3f6772d6749. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/TCAJI2581568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb49b4858565b49d5fc1e548795440e21af7728bf7ae3ca7b708389f4b664075. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAJI2581572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb74f81cbd5233a45527e669910af7b53349c0f4a787a8e1920ac5cc9453f422d. 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/TCAJI2581575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d6b0c17cb0dde555299121ad778d635b7dbcd57eaab5ad02c33c9bda1b2c942. Chain 2 (Bitcoin): anchored in block 957632 (2026-07-12T00:10:15Z), 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/TCAJI2581577.
A Change in Me (From "Beauty And The Beast")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x523c71d27efcade4986f0365fb328da6d4a790e3a2cc2b4890af58a2cbce64b7. 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/USAB11345201.
If You're Happy and You Know It, Sing With Me! Circle Time Songs With Nancy G! (feat. Doug Hammer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42990bb03d73390f639c2bb295edbf0f06f95747cf315ed6e9a3e085fe227d15. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USHM81582408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dbd730bef744e6cc26e8505f0812347730a4b35b607f86b197c0081c7674ea. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USHM81582409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5db400b715affb50fa9d3a4d5884a2dc94668f5e6f87f8c6ab93ebf83b3364. 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/USHM81582410.