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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffd4bb54212819fb14686640bd5805521ce38836e53b30ea37a4bc3a88430cd3. Chain 2 (Bitcoin): anchored in block 954066 (2026-06-17T08:11:48Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/595486eb-d05a-465a-a699-76e641f86dbb.json and https://artists.proofprofile.net/proofs/artist/595486eb-d05a-465a-a699-76e641f86dbb.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c64c2a6cfd48c4a104ecd84dbb2b6c6adbfe48d26e72822612cc1a8875e9677. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IDA130919802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4020130d8a4eef2acfe20a485d723cf300cb345dfbb5b7354e78d4f601ec768e. 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/IDA130919803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5844351beeafbed962bf7c021554a9aff5f23f2aebef96a0be30788b288e1ae8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/IDA130919804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a391b0e95648b2538bc3e7908748af9354023ca4c68c2b8b465128322fda414. 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/IDA130919807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ebac7e44d02a220ea95c0f92c5795e68fd6d4cffb1015ad4737584d403fe049. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/IDA130919808.
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
Windows of Indonesian Music, Pt. 2 (Instrumental)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e79cdfd0e8b3955636dd59d1c76355f8c65aec93e40fa6ad7e83c22bdefca6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IDA130913801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f337a10f4c23f2af456b5e95555d36134d686776a909d5c282ee00bed68819. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/IDA130913804.
Medley: Surilang / Kicir-Kicir / Jali-Jali - Piano
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6dcdb0221ddbb43d4c5a68819efa6ac62794b406f5f06a28d47a2c2f3d4efe. 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/IDA130913807.
Rest & Relax with Kacapi Suling & Degung
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x859515f53f77998a14b3cc8c6361dc3f44e6f11eeba72d551c046efc244b93e7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IDA130913001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a4c8ed71bcfdf54a7d9f4e25fb06a801e2e2a4a5d87b69d921022c5847135f9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/IDA130913002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd9e6dc99fb81bdf86fb7a33142b6facd48017c8db3795cb0b8ce644e25ac71. 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/IDA130913004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd687b821f98f8d78a356790bdc5cb8e78330357f8e84d3ad04e5a9ed83e8cd8b. 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/IDA130912901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c79f5beb3438f59fc83459958c5272109c8b668c73cf3664b4cdf1c0aee312c. 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/IDA130912903.
The Best Sound of Bamboo Flute from Bali & Sunda
Original Sundanese Music: The Best Sound of Kacapi Suling
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a9b10865b5bab98b812febc6643f7b7c65f8275c6ce88737f0d9fba13df8aa. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/IDA130922301.
Original Sundanese Music: Kacapi Suling, Vol. 1 (Cinta)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe649a158fd2ce056b6ed308535e7c746b9a0f51ca73984fc7d313ceb5f52ef32. 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/IDA130908905.