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 0x8590d966a2368b88cd491a2b89ebd0a82351f92a222749eb5b62ee33dea73819. 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/0320c3a0-ed75-46fa-9918-0954f4991dda.json and https://artists.proofprofile.net/proofs/artist/0320c3a0-ed75-46fa-9918-0954f4991dda.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 0x13e0f43d8d0b42ba9132e5ebfb80c64946cb95efe95051d96b4dc58689a2fcfc. 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/USVR10300320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x557195608d8af98e6b169190106f189d77691da876b029c366c9d848eab3c968. 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/GBBBL9700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62343bd382e808e67c41a63d9b4cf30a735721361ebcc1a43f8cd0496a671ec3. 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/GBARL0300413.
Caoineadh Na Mara/Amen - Lament of the Sea
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245aca7e2b2a48d1d9f8414f2b429873ed30965c98534c9e0f1679939f4e4036. 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/USWH19801024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x048f525c881723c884f8490ebe8a3dc75f46bbc5ede13b19b57f02916fa39a99. 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/USWH19801101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47b3ad35c2afcc5ccf210ba6c3f76833285ffd0af1075816a4b2e272211a4974. 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/USWH19801102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb1aaa4a89ea9efb609f1508a403d5bfc3e1e17b328314f5f23db7e57b939ce. 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/USWH19801103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304d50b2ea1e9293c2de758b2a408e34790f0bca1f88156b2aa988cd7c4fda6a. 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/USWH19801104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83e669f6e5ae2eb454efc37b05e0de134adb3cd5025d85f7644d08e6da9c0e36. 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/USWH19801105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e07f29dfe88a315c6aff063ce401d4c9401322a477a68d016920a5ec44e05c9. 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/USWH19801106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84f60760cbbbde591b795c01e0fdae7644bee76e0e4e025523422d3384b9018c. 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/USWH19801107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d3350eb45fbde688d9bab8eddd608f05e6e2ef09296f12e1d6e77bf2d485e4. 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/USAKS1500025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cac79ab62295c23a1a21ddcbbb7cd15de2b79c06fb4692234087aed8200231f. 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/USR2M9800042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa407917a834a69f467b73011c829c1b0acdc7ceedbcc6a14958f421ccaa34303. 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/USR2M9800043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21e334b76e870b7f74cfeb275fb65945a1db16040ca8d201967c271966fc7e4c. 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/USR2M9800044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d15302c8fa5c916350e43ae28af1fbb35d6711ba7867c44f7862a2eff8a89ea. 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/USR2M9800046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac264687cb6114dd0f33827b8bc2ddbdd708a13844f9bd8eaef0c54acdd8b275. 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/USR2M9800048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x029009c921ac5509a179aecf30d2cc52643d0335b76c3bbcaa9fb751fc0608d1. 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/USR2M9800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcafba1f4759851e526ab063d5ede620420899a72094d155744fba3bb750289c1. 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/USCQR0910006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e110e4363a2aea7b81b752ee2b207ac89eb17fc6bac95d9520ef21d522ee86d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/USAKS0500922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519edc055cbe396c36ba3099029d90844faee7b3f83d670717a25c29e58f8c82. 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/USAKS0500924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7bc1d4f01cc62d3ef4be529965b9104df9b458c04869b9b7ed463e0ebc43c68. 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/USAKS0500925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbab5b335f47cd512ae1ad532b335f7f1196b9e89d64813feb95e411885a8ae1. 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/USAKS0500926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b02c03d135f9b40a0ffcb8341b549a20fe80b3231cea4906e73e671e04203f. 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/USAKS0500928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32db2c0a4a18eb65304233590d24fd00ad79b410db70a1f2ed7c6856bebce412. 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/USAKS0500932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c97533ac753b33f1275d1c06a3c2fb0b295aa790c24f10bb225f7c1b1046bd. 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/USAKS0500933.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3e03ceb314c2f4605300f04b4b5826ce950af9b30dd7d69bcd2f74debae421. 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/USCQR0510106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x560ab5a940ea25db1cc171ad7cddcaf4f3300c49bee4b15d08aef3b054b557bd. 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/USCQR0510084.
Catskill Mountain Air/ Wagon Wheel Notch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81529647a87564785a3123ec8575f354312534ca198bb2c253aa0ef368d6fd3. 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/USCQR0510126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2b442874feebeb181177c3185aa890e51b7681a206ffb70734475941178127. 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/USCQR0510127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d48a66b9bb59d8995cc55f06dd7eb49d628595fd4ce8e3bb3e2236782571b3. 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/USCQR0510130.
Fiona Ritchie Presents the Best of Thistle & Shamrock Volume 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2d7d587986cb1cb6b16934374d36183bf0f09956c934d8ddc722541a72adf6b. 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/USAKS0501753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e5b4c52c32dcb0bd6fdf3e08ef60da081fdf420a269105cc41ebc457603370e. 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/USNA19011342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be972a30a7040fd3864241f092cef13360369a165ee84d24ccd49ebba7daa33. 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/USNA19011356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d5dbaf1b4a86bff56c443d24918f4ab6591a5ff92c735fb8d0a82cc9e6f9ff5. 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/USR2M0500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44c30256fae9410176dcc3723a1e58fe1ef15ef9171741bddff7b0d21f319823. 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/GBJMF0600050.