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 0x62e702feca2f1886bc5753effdf3f1bc3d235f52454d85c0029d03ceba4eb340. Chain 2 (Bitcoin): anchored in block 954784 (2026-06-22T02:53:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/eb559a4f-2c9f-4770-9b19-4cecd31d9d4e.json and https://artists.proofprofile.net/proofs/artist/eb559a4f-2c9f-4770-9b19-4cecd31d9d4e.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 0xc355cf69336444d7a1ee6ff876527774f03046b579cd0d6307bc6409129c9a38. 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/QMFMF1484627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa68ea241221b310fcae54a1642a2b7d58bfb0be64c65c7db434ae68ae6201201. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/QMFMF1484628.
'89 Skratch Gangstaz (DJ Pone & Snayk Eyez)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd4c0b17f28553c223c9e45c075626430b55a32edf3cc54afa783bca8ba027b. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/QMFMF1484629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c9447f7460ae2ef6804eee35f71015f94f05105d9101d7c92a4c346fcb46ed7. 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/QMFMF1484630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fdfb52f7a745e4e11bfc20f5fd8cecacf97c7c8ddfb42a68d9e228fa897168. 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/QMFMF1484631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5fbce4b17a07d767827af9e7208043f925369ef391952bf4608e7165a7d283. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QMFMF1484633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe744a5343dc9b2f46e69f39f1d8d5c4ec8ac228265298a1f550d460e4881433c. Chain 2 (Bitcoin): anchored in block 960277 (2026-07-30T16:10:47Z), 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/QMFMF1484634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62c0f02da90c54f47dd0adcd8642b6356459f679b77310711652f3c536a79c7. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QMFMF1484635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x956340c5265eb7fe8c93ffe734753e5f28f05281efb3689c4404def83991ef8a. 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/QMFMF1484636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55d85f5808fc6e3540f57bd2c0098b406fd924ff60e9705582a0c16889435c30. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/QMFMF1484637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26bff74f5fa2c1fb3cbe854db1b77c3b36a58ea7f08ecdba72ed9932edb7306c. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/QMFMF1484638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b4b2caf7f9cffa00328139346c64141127f678dafa6e72d25a00a0e99972f8a. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/QMFMF1484639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66a53911b376e5910d00fabde3723592d64518bb0fabdc4ab4a1d280454db638. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/QMFMF1484640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee758f9f3bc34887c5ca6fb856340676e5c56885d1b6a162bc30d88b20cc7610. 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/QMFMF1484641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36fbb6f1e676a626e5373187cea2f5e2633a87efa455b59e2c1ebde20f650536. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/QMFMF1484642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e427315f6cdd80c1506b4617c72472e3d01975126708ced3bb0702eb13e760. 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/USHM80486481.
Poppa Large (DJ Boom Remix) - Kool Keith
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x046656c4d526de8096aff9195129a3129cad229b40ebe6c87b134382ff1ff268. 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/USHM80486484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28987011f96ada5724ce1ee3510b79b8a7e7dd752ce96e14a625ef5f06f2916b. 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/USHM80486486.
Listen Vision Presents . . . Hip Hop Highlights
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f3bbecd0b47dcbd09f1e9e203eed8d9effd7114d2892d6b438981f25df919e. 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/USHM80413146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f8529828b5aaece6a1d929670c15dd056dac3d6dc799f81a2152423cc874f05. 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/USHM80413147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf20e8124e784e72a50b57b96d1fa4f86801e10fe03c8a4320c0dbc313bddf6. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/USHM80413148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8278aab1be417d2e7991656797a04e2a0b2590c3c4d8ab4cfd5551c9dd20f288. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USHM80413149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c0acd340e64f529a4c3f34b3689a9f56b1db2fa8e75c41b578914807dacbbeb. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/USHM80413150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0db9cc65eceb951e4be45cae759b628fb93d242137621a6e39f79392477960. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/USHM80413151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaad32dc265a16af95deb8d7b7d768b7eae46b5e1dcc04a33cdb640edf9f3f538. Chain 2 (Bitcoin): anchored in block 960448 (2026-07-31T18:48:12Z), 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/USHM80413152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5892fd87912b708130bb90c27e99fe7b191bfb33c9b910c4623285d90f0db716. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/USHM80413154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x555b6c16f5e3efef7d677ab059172051f6ea7944f7c538f56454b15140e982b8. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/USHM80413158.
The Second Adventure of Boomski and Clutch
Bad Girl (Rmx) – Black Buddafly feat Fabolous
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69265771f744d4425843007f6da34c9d2d673cdbba88d06c5d1142d946d46036. 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/USCGH0730462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24a99c6e64458f2241cb98d585bc6c76a4d22b8ac7ebc4f08b01d8d31dfff160. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/USCGH0730475.
The Best of Listen Vision Recording Studios: Volume One
Right Right Now Now (H.H. Remix) - Beastie Boys
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50267575b3fa5bf814ac96009a2f032effad1dd4ee950fc62623ef880320b467. 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/USCGH0659836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a45b465a56c7d0cf2436051033e659d39e28012c903aa7e2ac699968b30b41d. 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/USA560700492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8c77a480d286478421463e1a0c4b934806e995eed068c1be1dadf0cb4b8ee19. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/USA560700500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0882bad158073f72afb994682a7be5eb5a4ce09b680f3eaf4b4007aacb984b2. 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/USA560700502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbe530c64bf430ca53c9cf80be1dde07b17d1bee137c8803947593599df2db7a. 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/USA560700503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf8e55640cc6df9a067359e2eaa3a6138f81b133027377a507f000a6c98f4fe8. 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/FR08Q0108107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed84beadfb647716dee33838fb130f8ead9a895e15e38e4c26ec8302aa1aa8a0. 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/FR08Q0108113.