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 0x32183b02ee4d1afb55a67a2a94305517190249d4e78d669d6274a89ff04c8698. 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/53c70224-4ba6-457e-a0e8-2f213ba41a5a.json and https://artists.proofprofile.net/proofs/artist/53c70224-4ba6-457e-a0e8-2f213ba41a5a.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kecapi Suling, Vol. 1 (Original Sundanese Traditional Music)
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 0xb99e9c71048cb002b8e97cebd3dd456848f8a02d79f2026e4b3f38afc203fbbe. 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/FR6V82089552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3867263deb619bd58bfad082bca4e229f3ea23a3f7533c16596f3b2c5313da19. Chain 2 (Bitcoin): anchored in block 958819 (2026-07-20T04:08:24Z), 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/FR6V82089553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64b4a898bd7a415480bafc8f9c3ab17b7fbe094515b4ace6ecb86904ace1d1d0. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/FR6V82089556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ef60a38420c9161882e18e4d9711421142bea5635c09ebd2c7eee3895edaca2. 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/FR6V82089557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf895a077cf1425853698e541e9467eb8b4a3374b9b874472f1ef023da876d20f. 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/FR6V82089559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56656dc4ba1810b4a1079d520e5694f75559b6b50c855b50ead921e98af6bc34. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/FR6V82089561.
Kecapi Suling, Vol. 2 (Original Sundanese Traditional Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dc46581aa80705538159f92646ba4dc782f0fa6df873a23edbe5370eadc4ef8. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FR6V82089565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4779eae1738e90ef78c689e9a0afc83a24c0047614294233dd84ac11b0211ec0. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/FR6V82089570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad24b12e9557d8175479911412b669d94b159fc84e07a154e2b5337b12c831cf. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/FR6V82089571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x982ef9fa609dae07bd03255aad2ae90105ac7f0ae81a2caf07af9561d1cb0b1d. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FR6V82089574.
The Best of Classic Degung, Vol. 3 (Original Sundanese Traditional Music)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f9b1406f8c89925f7f4dc1661641a03b464a1fdcbe9d473694e87a17393b25. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/FR6V82085474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33f4bfc89ef991f272f90bc1622416facf20f8a51bbb6e1470e2e8fffd3ba610. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/FR6V82085476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed80f6371c92e220d1a6d8adf07b7a67fb16d5a0a9a949645a1ff0a91333dc7f. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/FR6V82085477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e6f7dd29cc2c63c9a332696097e6a30bde119751c88d4de178f7e08d56674b. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/FR6V82085478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d2d6488e0d7378416a86c08c9cd49cf60ff87b64dcbc60b7b6f98f141bb0f5f. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/FR6V82085479.
The Best of Classic Degung, Vol. 4 (Original Sundanese Traditional Music)
The Best of Instrumental Degung, Vol. 6 (Original Sundanese Traditional Music)
The Best of Instrumental Degung, Vol. 5 (Original Sundanese Traditional Music)