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 0xcd427accc710fb5119713ab459697f285db3408aea095be5066587d5ad0f3f71. Chain 2 (Bitcoin): anchored in block 953803 (2026-06-15T15:41:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea481049-cb05-48ab-bbbc-1b2187bb4a5b.json and https://artists.proofprofile.net/proofs/artist/ea481049-cb05-48ab-bbbc-1b2187bb4a5b.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
The Best of Ballroom Paso Doble & Slow Fox
The Best of Ballroom Modern Dances, Vol. 1: Rock'n Roll & Blues
The Best of Ballroom Modern Dances Vol . 2: Disco, Reggae, Charleston, Mambo & March
The Best of Ballroom Modern Dances, Vol. 3: Twist, Slow, Country, Merengue, Boogie & Salsa
Günter Noris "King of Dance Music" The Complete Collection Volume 12
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 0xe8dc7fe833940e347b2fa2140f5bfcf67dc299a6740bf351b8be6cef894f28a8. 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/CH1601408203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc344eb76c88f3dd81e4a7dfd89f701e4ce5d58cba384205c87e69dffb1a204ba. 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/CH1601408204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cb872150cb0a8d11d6a53e64d3436cbc9ff66825f7d3cfa7069ed5732c2dbb. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/CH1601408205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x821c8791a04434c0c52939ef26a058649ce46de9f6fe4c00bd3fb148b923123b. 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/CH1601408206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b67cc3b3735ccacb475681c8a2aa897856031940d229d114485a0b5d2257c9f. 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/CH1601408207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f00941e073abdf425bd26476134c63990d2b07255fbc679aabf75010b9c2be. Chain 2 (Bitcoin): anchored in block 960429 (2026-07-31T16:07:24Z), 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/CH1601408208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xece4f6cbffda5a1b6b002b83453a37dc0cc726e9cbd851d580b4ef397b0927ba. 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/CH1601408209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb479c8a4d09e642b3cbbbff16a113b53b70c1630b6a80129a4ed1ed0c3b37b62. 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/CH1601408210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59b0a31ceba385775a599657fb71e20ed53bd0eaa0fe791186b40d0e454c2cce. 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/CH1601408211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90268c19b57156600d1137a8d54704dd896d45a91a9277f6289eece5d8785c43. 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/CH1601408212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a37df4686e84a91b42015035cac4945419be754ccea3816e37fc93f486cba3f. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/CH1601408213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bb9a4e1f9f55f86753da4542df356fae317061b32205659bb7f2bbf39aa61e. 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/CH1601408214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x079aebdee8b539bc9b1ac1d3f4ed8fa2dc7689b57bfe3a6a451d971756906743. 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/CH1601408215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42b18c1c00bf88ed99885991f174fc8935d98de68955451a61015f2ce6769f3. Chain 2 (Bitcoin): anchored in block 960427 (2026-07-31T15:59:18Z), 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/CH1601408216.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c36648662a8dd6f80d0b30e12edc903bee212ca4c08e381adc40c333e548f7d. 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/CH1601408217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe261f636b99a4d610cdea0ef37c993224e5914e53fb816da0e747ed08e18d07f. 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/CH1601408218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51367b6b05f1f8692230263e00b3a52a4e51db3fd4ebf2a466f019267ed139c4. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/CH1601408219.