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 0x0cb5ce1ccf23d4e6c01ef85866395aded3a3649cf3820391b85bb9e1d2df3cf8. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/34b71876-8eb4-4c16-b49f-b901d8f8c820.json and https://artists.proofprofile.net/proofs/artist/34b71876-8eb4-4c16-b49f-b901d8f8c820.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 0x62cb3de1c87304e8a0d2739c48a706303ea48c6b82fea034bb379e8eea243190. 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/USXTN1103268.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0e595157572548e2b1ffb3e0f9a25f8e8dc39eb766dd7cd731d5612f54a627. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/USXTN1103275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd3881e51996d462541f7b90f90dba79392f39b845785f5a220dff640a0e4ad. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/USXTN1103277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fcd38d7723b230dd2e6bc4c29bc508037330deae5c26d8afeb6494bc17fe266. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/USXTN1103289.
Music From the Time of Babylon Berlin: Polka Dots And Moonbeams
Music From the Time of Babylon Berlin; The Breeze And I
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64293454f0c644130b1743f90a58b48026137078a750ce17eb48250595e84357. 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/DEPI81401279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d98bdd33297b92e1c4842c59508325fde53a63c3bb3202d970624148d955d41. 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/DEPI81401410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c003d2cfa862f9986010b876ac9893558cdc657a1db7f74fb7cd20100db6312. 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/DEPI81401411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb934db15195b85296c4906edb5dcaa3a3f44a09606fd153d037ed731b41dc57f. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEPI81401412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3da34955b614716a8f8b8fdb38b87ec5ec29ba770028be0cb2bc692ea3553903. 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/DEPI81401413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ecbda645bad721726f1da6a20290b542b234e8041a0254d7e660ab9603d101. 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/DEPI81401414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0852482317e2b36bb0d55d0741b933340383443f6737d3be4a89a52b4aa00e. 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/DEPI81401415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa1ec16d7154fcc566e86b928d9d5a12e29306ceeb11d2986789b9ba25884bb. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/DEPI81401416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76de6955c6b78a41d4f5f35a925e5029e3d97a63fd8532068e376782f446840c. 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/DEPI81401417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16996fc26e75445552c73fce27f445029fb09f120342e78d40a5b64af193355e. 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/DEPI81401419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15dfdff883392db6b1e49b8583c8cb39ad0469daa7f539afeb39ded53972e37d. 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/DEPI81401420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2907bb8da75ea08adbf37350f5cc78269046222dae9d8af6eb294d11180857. 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/DEPI81401421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x801467490febc361dba6ec396d31bd484b5e80c4ac6b714a24c1c484fb1e59a0. 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/ZA42A1403300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1554b06834318a445cd09211fc48f5a71a27aecc13a2b95f2231488af2d9df8f. 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/GBLGL0832334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a86e1389e52d6c90fce6a011207d4d7e2d4045acefbe7021f70a50e5a8ab8d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/GBLGL0832340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf677c905c9c10dba8ab98b07a64b5d819056034f4be2037ab07c6097ae38b04a. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/ZA42A1525846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a33deb43e7aca28e59d2acef19509e8390879dcb36d0155fc0e0ed0c0150bbc. Chain 2 (Bitcoin): anchored in block 960108 (2026-07-29T13:09:35Z), 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/ZA42A1525853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x695e6d62a978dff469b818041259c726898e2ee0c623ed3e57d7c78eb8f1e952. 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/DEH840701644.