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 0x54d1873906f0fac20886a35084e0a38f7cf60d663c5ad9264bd2021aa072256f. 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/3cf31898-a3bb-43f4-aa86-49418064d2ed.json and https://artists.proofprofile.net/proofs/artist/3cf31898-a3bb-43f4-aa86-49418064d2ed.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 0xbdcd773d189ceff2a83c3280a298f8b3f9d18dbc34a85c2aab458ed824614f8d. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZ5AB2328484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01ea639823e224725324b7738191e26298f02eedc66f7ae98909152d435033a1. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T18:58:42Z), 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/QM4TX1884048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79d7578a14f69bf6f25f5bbfb3a3c7ba7bfa8e4c3b2f2f56c3986b5e58bc1bba. 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/QM4TX1884049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27dcbed9c3fb584efffa27060ef09834ee64df614c27a3c6496f1f0b6089d376. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:58:17Z), 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/QM4TX1884054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b1e6c4b8cea4710a97d25024e680fead6d2794dcce7410f34b93526c5843192. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/CA5KR1508203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efcbdd796502c02228b29b1ba41ec83c748bf8b7e4d8c952a2663aac36af899. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:56Z), 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/CA5KR1508205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4906f16ce3e682f92752458fc089a258b2bfedc15f703ac832dbedc8f7aaaf. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/FR59R1627939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6efcbdd796502c02228b29b1ba41ec83c748bf8b7e4d8c952a2663aac36af899. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/CA5KR1508205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4906f16ce3e682f92752458fc089a258b2bfedc15f703ac832dbedc8f7aaaf. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/FR59R1627939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71b5176b22515411628121b07c3cfcad6af7adcd9107c9b91bbfd5220439e30c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/COAKK1900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70136a4c8689b74cd0ed91b4a1fd6a172451fa522b9f9bb4c66073eed53c51b6. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/COAKK2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d281273f34b1dab027e3557d33c64a2fc397b7b539709bf113c5d9a7915fd0e. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:40:58Z), 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/QMBZ91945482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc65840b7f3beae0c051baf7c73f988ce37759a12b09f0e4a9d387d79559ba7. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZGLS2369456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefc6f7866c700da07f3241bd1ba9abf1a7a55fca50ec89594fceb62ea3d17d06. 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/FR96X2087071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa177f24a08fedb98a6ae7ba5ad9bb1a5196f6d7d087a3d8ccd295baf11317f4. 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/ESA012031976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13681a663c868b63bcbfe5bf5f18431d6c931ea1ed74a75357df2adf8bfa87cd. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:56:54Z), 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/ESA012031983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad16b6626efbf16152960fe08339c40cb45d137d5901702dfb841ba4cc2e4050. 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/ESA012032501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25231d61c5dfdfdc0e6f5cb15c90bfe1f1105bd56d5f67ab6be2336a91dbc34. 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/ESA012031919.
El Imperialista Soy Yo, Vol. 12: Imperio (En Vivo)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5da21c0a64cb409939ed44d9c1e1fce93d95039f65c10ac80de2dcae1e88bb76. 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/FRX201666354.