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 0x762fe0ef20553e1027f8dcfdadbf737e0af22c416576cc73846f09060a14651a. 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/ce07fca1-d8c9-4435-a9e2-c104cf087976.json and https://artists.proofprofile.net/proofs/artist/ce07fca1-d8c9-4435-a9e2-c104cf087976.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 0x3b37451cc76124f60bd7e4182893653755f0d75d93865d98a85ccc5779b6e52c. 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/QMFME1305477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7be132388c1a1d80441806c268c25fdf98d8a42d4eaeb2b1f416f9223ce1f1. 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/QMFME1305478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x706b697051f0310977cc3d1ab54eb8684b23019f956f9287fc4d4d3ddb40d593. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QMFME1305479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbc2d1db0f93811d32f72400032f1962a2df602d53b5b176057c7fc7fb75f43. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/QMFME1305480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceec31c396d56018d16330c075ad9fc6dbe6d5666c62fcd6cd8d5e6f692db2e1. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/QMFME1305481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00d8f3587a55cc6b0e70d8e1657b9bdb58a44865daf8158623b96890cb1e1dc5. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/QMFME1305482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d6e05bd033c4778e0a4a722489918520e0cb4db90fd207481290f4299bdd76. Chain 2 (Bitcoin): anchored in block 960330 (2026-07-31T00:58:21Z), 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/QMFME1305483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2feec17d3746c64de6235d13f0f8d9478974156ece309a5a97e0b131997051c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/QMFME1305484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b2e64128a1272eed196b4fba3172662ac61325d01149b764c0947ffb7ab311. 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/QMFME1305485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc745a2ab3a49ac5adbd7f827d9fb89743c1e708b9acffb7f0efc39758c0fda43. 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/QMFME1305486.
Concierto Sinfonico No. 1 Para Bajo y Orquesta
Christian Galvez Trio Live at Kozlov Club, Moscow
The Art Of Chordmelody (The Absolute Tribute)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e95c86cea217056383588ae456ef4f23f4fffd1f350b1e322ca1ac1f020710b. 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/FRX871522243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x098fe984100e553caa833815d3135dc55ba9855639b1af57a6f87810370b82ac. 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/FRX871522238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa547b03ed9472ade72b6c835f24ad58548e814061d2251a3abc6d09eb6dadc65. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/ART031000064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d448b65d2d4ce0f0e8436049fbc32e75f60d95d278b14d8815c5da3eebe79ce. 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/ART031000065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa378a8453209660626e034d529c95a6aee396bb9c7c6f9b1a8ab439de82e2fb9. Chain 2 (Bitcoin): anchored in block 960218 (2026-07-30T06:57:05Z), 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/ART031000066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd0557929fdab106346d1bbd117f7e8c8c9e18d58a24d81bc25077175befbbf. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/ART031000067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1db81403ab2a00ee23fc233854e8fbebded631faa33efb5ba88ba1396bbdb141. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/ART031000069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc64101fe1c997fa3ae692bcd952eac05756aa82d0b609b681dcd7d904e7990b4. 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/ART031000070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b015beed891044ac305034f8fc0c5959a8d790a8220860e7425ba0f9fb5085. 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/ART031000071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1dad015f4e1a559601a486c67b4cafde113def3be2d4679bd7489f529935120. 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/ART031000072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1630400e060152b7daa3182fa0da805aca1c73898a00fd0f81f28f6bc83423ff. 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/ART031000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78cbbc95ab460db69a8fe22b9948d0db747f88191dd774eb93df2ed6d3244f18. Chain 2 (Bitcoin): anchored in block 960389 (2026-07-31T10:20:10Z), 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/ART031000074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54ce220c3f3788fd6f262fe4ba3c4aeeeef219b478147752817a801f8f899ef4. 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/ART031000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd336f141958115ec832ba914a342e7ff764d9e075ae8b408dae14763dbb0b723. 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/ART031000076.