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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x686687d83a08b74b574a9043e6f9ed6b563bfa07e245d1c2a5004ac26a32e6a2. Chain 2 (Bitcoin): anchored in block 954667 (2026-06-21T07:29:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cffc2cbc-b67e-483d-a156-574682b1925f.json and https://artists.proofprofile.net/proofs/artist/cffc2cbc-b67e-483d-a156-574682b1925f.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Die Walkure - Ride of the Valkyries (as heard in Apocalypse Now)
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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0592afe589fea4d98450251da99fbd6c9ffbead547a568afea2e4765a2621d. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/USA371001713.
Sweet Child O' Mine (made famous by Guns N' Roses)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a7adb927c6e1b7936309ec1e2e1500e759a6f71802c42ba193ba16e316bbaf6. 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/USA371001724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0547a47a187b7dc44669d184a12a456042f5afd45c8ce99479a25e5e0045cb4a. 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/USA371001735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71bcd34138db18e9d2d4e086d68ca764f6ab5620896934cbab8546bebc828ece. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/UKUZW2100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c696726c47c238db670754d27c2d7cc271301435bceffeed43685d28dade730. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/UKUZW2100137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fb640aae2a1e4b2a3a0eed099b2e4a64f2077663ca77fa41130f5c2e953ba7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKUZW2100138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6488772765baf06ee0a94c221fab8ccdd10233598c24e57d90f79dcb1fc43a24. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKUZW2100141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad5ba215199a4081793ab80bcc920bd5afd7de228e570928d3876cb5b0cfa98. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/UKUZW2100142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1635c9cb9b4eefb8fa0326aa19838e2c39e7b4b3d436a224787c464cd4220bfd. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/UKUZW2100130.
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 0x79658b6dfd8c17451c94f19d98f7bf154a89ca3f55b39091f0439ca9f9387543. 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/UKUZW2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd796972c256fefccbb7cba3058faa572584c6b9c0b75c09705970f014be60a. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/QZMEV2252084.
Kick Back (feat. Matt from Matt and Kim)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a2392114cd7c64f105cc76434f4e7f77faeba7280beedc4110febdaae3be27c. 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/QZMEV2252085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47d241a7a867edcad44d988a533026e26cc60f0e6951841634c604db353be4b4. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZJG52019037.
Today (feat. Tom Higgenson of Plain White T’s)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b991a3b2d58d97e1cd030d7db1b1b07c4ed32e53f2b5d2cf1af118fad01c2ff. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEV2252086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44fdf6e61d1bb630d7c61e612d137de92c47928c3972d49bb902ad2bc1684757. 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/QMEZE1948936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8073d972fb16df9c22394ea630fca4cd3168d1fb6ba4b69e179b85c47d9eab4d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMEV2252087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e7f514d8fcb0902c5e2b0a36a8bd589304a299a95d9cb8382222be7b2750ae. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNMY2113071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dbbc267a1d072cd223e0545a316ce8bd84de5be7fbd40d07ebdbf8fcdbfa46f. 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/QMEZE1948991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x479cb7ffd728fa301542be4d18e1fa2a9be4dd1cf74465c49aae3738ba66de1b. 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/QMEZE1948791.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7533a276aedb8bde5a586b538741ab262c7b9afaae4bce75320a74b4577534b8. 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/GBMNA1810893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7b7f973419d59ce0b130ae30571882787b328718d7c71981815422247f6536. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMNA1810902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e32301a8d91455a74f83b1a69bca3b1fc1072c6d46bc8cb4f55bfa4ad902c6. 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/GBMNA1810904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33d66aad5827e3d34a764ad99b13abab0ea61c4ec15fd1834aa20cc8e176852d. Chain 2 (Bitcoin): anchored in block 960463 (2026-07-31T20:42:35Z), 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/GBMNA1810894.
Piano Covers: 14 Beautiful Piano Arrangements of Pop Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeeb05350f530ec03f518f6f6cb6560cbac47876b53c8a601b34421c02a6272b. 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/GBMNA1902287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6173f57163ec6e9916c59d1c8add0495fa060126714eb303f58511c1ab64ba. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/GBMNA1902291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93619521b919fb59758dd4a4d2f4012f370620f921e939d6b947f23babcffd97. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBMNA1902295.
Relaxing Piano Covers: 14 Beautifully Chilled Arrangements of Pop Songs
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd061edb6645ad2ee53661b0ee2605a23eb804777c8a5096e93087a63f4b611a. 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/GBMNA1901506.
The House of the Rising Sun (Arr. for Piano)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bb35fa0f16dab759b360600ccc65b0667e0331aa793f754e7f8c2a9df50709. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMNA1901514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc2869742ad2ffe1da7b0e8ad3837f66493dce687080b8e6443e33b5c4c9624d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBMNA1810984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaca0989ec5e7450fea06d8d600ab92925d06b5731ab50b4d54b76eb73813884f. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/GBMNA1810982.
Soft Piano Covers: 14 Beautifully Chilled Piano Arrangements of Pop Hits
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2efb524f06af5ce28df8d8b90a8ecdbd3deac252dae000c9a6928a8e46dcb3. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBMNA2000347.
Smooth Piano: 14 Chilled and Relaxing Piano Pieces