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 0x9e33e24c26c131ddcfdfe4f50ad07ee892ef17e1e8ca823b3f5baf7dad2c837b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5fe7b716-1ad7-4af9-9c7e-64f9aaba36be.json and https://artists.proofprofile.net/proofs/artist/5fe7b716-1ad7-4af9-9c7e-64f9aaba36be.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 0xc8ca599cf43fd599501ec92fe56361f59b6f68789cb1a3ebc48e524d2b88965e. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T10:24:04Z), 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/GBSMU1971338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x000bed84d65fb7f9bbed6e2f2041626a60b32e5a2f0a3b334cc0fd6670b5dd56. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBSMU1863692.
Subconscious Theatre (feat. Masta Ace & Goonie Wolfe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3724d0081989b398e1590b3de7ed100ecc68ed07d1d7d2fafd294926dcd54ead. 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/GBSMU2017470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x855f7f39ec3daa718e7e60f49f58e11692c47aff22368af12254803a0e6d55b6. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBSMU2017471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf91708289708aee02009876bd10988cc1a9c4b435068a3391d288cff8795e545. 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/GBSMU2017472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f777c73b55e0c20644e62bd35a8bd063ef9a8d639e0018142f73f44c26080d. 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/GBSMU2017474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cecd2048bb73720bf987b3524458560801289d43268b57b6bfd2415b698c2ba. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T18:47:29Z), 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/GBSMU2017475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a2d2f02caf97412dbb2de5b1022b83276ae460f0a43843e196f7dca37b40288. 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/GBSMU2017476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552c6b34c084b8094000249e2db0eb42dd048c12b7efeb286b4e6954ca09d3c2. 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/GBSMU2017477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7111d794f1349d8664e5cbdd1deea10a390c16f281615e6a88c51aef0f5a542e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/GBSMU2017478.
A.D.D. (At Death's Door) [prod. Carl Adams]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b50fc4d0b070e834a59ffb2e1163c77d9a60a2a8632c73579322c6a8615ecbf. 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/GBSMU2017479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf5d367e45e2086b064f9bd2fe2199abc2977bcb27a51dc67a24791ec8668362. Chain 2 (Bitcoin): anchored in block 960181 (2026-07-30T00:53:20Z), 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/GBSMU2017480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eae96d6eb57fa7ea8cccde4d896cb6c7ae9c43a4c6f4492813456424e976908. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/GBSMU2017481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f66d2e6718a32837cefd1f521248fba0eb0e98b9a134fe1a858bb05ec212620. 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/GBSMU2017483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec476509133b86cb60727e7e55930097b18126063a2cc3ebc51e6429d174d2f1. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T12:32:15Z), 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/GBSMU2707992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2756f26780677f32ab9860fad1c768aaa67257733fd6a7fe2f49345032e5df8. Chain 2 (Bitcoin): anchored in block 959065 (2026-07-21T22:00:50Z), 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/GBSMU3239783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca46a647a5b56ff9242f4ab09567a09bfac954944c0c08c3e95bd18d8dc92d2e. 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/GBSMU2832656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a801feb225743c7a367c1d3510d726197fd7bb4cd897969d3f9c487863d60d5. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBSMU2957504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995c6ff43f31fec7d7ff87762bdaf7e7e660fa8071bb415f8d386a2e79d1e9be. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/GBSMU3902465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb5ce9de0a2a63d8a4db91f4711110e3bda99b7dc86751dde99f3a4274f6bca1. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/GBSMU4453592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94a901e8aad1e344796bf77153a4668d6fa055a4d5839efdbb75db87c536967. 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/GBSMU4453593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5005af6277ad42dbebdaf869a21276237f68414c94cea350af116ad68440eae6. 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/GBSMU4453594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccb3c03117752d7aff2f31cabe1e644a006e191ae4948027c02240441cd7e0a0. 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/GBSMU4453595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54828e9e39cc5ce364ce644e9caa49f6a00b61b5f48b0b0fcbcaa1275d43440b. 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/GBSMU4453596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9423b306f844b9614128599fc699c349d3f0256f2cd79fb10826ff8bbecfc8ff. 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/GBSMU4453597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef8dcffee2a4411c144ba04bf8af68872980fd34b7f2f74ced08ae73300c6aec. 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/GBSMU4453599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1edf7717eea8d1c9486763d17e6e9d06cabb3af74f4cbf66c845fbf3d21f233d. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/GBSMU4453602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf2a5340ae9e0550e59b3343b258bcd95a5220cad7d3646143c4ea22a2640e25. 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/GBSMU4453605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd90f8403afca5015e920769090b1b78d079d71b4f173f488560893a5def8e2. 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/GBSMU5139146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f7e0cc65c879974d1d8cc9a7917cdafcda485d3e546d19f88bde0c1c6891884. 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/GBSMU5231926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e2af0dd81a7beb0c350e28f6ee1a4b5f4ef70021dd6e88ac50ffb7c8dd983dd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GBSMU3505789.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d031ffea01ac7f8f9781690eb76b8c7896a6f465a081e8b560df2f62527fae. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/GBSMU6135652.
After School Detention Instrumentals Vol. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c937b7ddde466ada385b0893c63a156135469e5d2f553857efe561bb08cbed5. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T09:14:08Z), 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/QZJG52540895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcccf8045ba10e65c0aae45657d29fe1ec1f225483e204bf2d5f20b13ef04d366. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZL382565292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5159ac1f5274e904e89d9940249b7ff4fa1a511cf4c6a298d04f20b8ec60f535. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZLL92577442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55506432d58c2793b25e60a6f4c34fae07aee155d8b57b587afb9d436a662382. Chain 2 (Bitcoin): anchored in block 958805 (2026-07-20T02:22:58Z), 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/QMDA72570974.