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 0xf7751c14858cd78e5aa4fa175037acc7baeaf558b83ee88793eef5bbca56780c. 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/d5199e03-1247-4936-83a7-15aeb9566e54.json and https://artists.proofprofile.net/proofs/artist/d5199e03-1247-4936-83a7-15aeb9566e54.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Soothing Jazz Sounds, Pt. 01 (Continuous)
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 0x902b8c647a30a8f28b5eebd8d4745065d61616d7bd9c6275daa86db9cf65b30b. 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/US83Z2472150.
Ambient Jazz for Relaxing Sleep, Pt. 02 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3a9a87da31b12326ccd6af338be05a03e9093b6034b7b4818b3d79baef1afe7. 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/US83Z2472151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xada4e86a107ceb6995c563ead75af3f49bb96aee15f655746b7636b4dbc801e0. 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/US83Z2472152.
Jazz Sleep Soundscape, Pt. 04 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cb50a6a275144380222ed9686ed739ca7e7fbe9fbdf56b7cc776663525f5650. 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/US83Z2472153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a93e1ef8891cd3a41b682297c14867113bb4322183f36ddbd4e81802a8a2ca. 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/US83Z2472154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd704075fd209ad887472ea46ac5ac3b499603ac80115a246a916e32faae5b9a8. 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/US83Z2472155.
Tranquil Jazz Melodies, Pt. 07 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x101d6d050afb4f4eb8c95c27859a541fc40bd4a3e94e9386939bfac6211a07dc. 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/US83Z2472156.
Chill Jazz for Sleep, Pt. 08 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac5b79acc49e65c43eec361876dc7e859470419a51c210873ce0a753fb3fa71. 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/US83Z2472157.
Soothing Saxophone Sonata, Pt. 09 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33b9531399cf91f6eaa79f1934564f1f6c7a8297e9727bd1192b9734e6a8549. 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/US83Z2472158.
Jazz Moonlight Sonata, Pt. 10 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82366c526d46b1093e86e5f10d6f7d91bc4514e56528ca2da570d9e5eaed971d. 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/US83Z2472159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a74a9320d223e70836b4ddf009bcad1b208cf77303dd5d75c7f525854b3546. 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/US83Z2472160.
Serene Saxophone Sonata, Pt. 12 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55afbc55888b002cc5da8b93754a3afe590740ba3b5732710d8d028f5f20b737. 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/US83Z2472161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad8eeb63ab417c3fd4f630413f0e660a8a86490b14a56f69de860d34b795ac93. 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/US83Z2472162.
Soothing Saxophone Serenade, Pt. 14 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f7538fbce3c1346589fc0e6f7eab92d253db2c86389eca7079c6bb5acf780fc. 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/US83Z2472163.
Soothing Saxophone Solitude, Pt. 15 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19f3a108d71c5d1b04739d96c54320707f6f0c42e3259233271e7c18c1d042a9. 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/US83Z2472164.
Dreamy Double Bass Duet, Pt. 16 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35df16d0033e1f35733593741b7664afed60fa1adf5f859ffb190329cea0f27b. 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/US83Z2472165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x911eb89ae0e1e94135870b2c697feafa72f2f04a48ceaabe6812358b93211728. 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/US83Z2472166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x810b234951a3afe8442e973a1eb7f6fab28552fcd9533dd5dd95dd2681771d93. 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/US83Z2472167.
Relaxing Rhodes Reverie, Pt. 19 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd80e127a4129aebac8340492fd998eeb2795793e02a589e56a318b3fb34372c8. 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/US83Z2472168.
Jazz Lounge Lullaby, Pt. 20 (Continuous)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b212ca14a1e17f970debf0698a19666390d0db03002c57e71cf320c3adba8a1. 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/US83Z2472169.