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 0x5b119a59f6113ee8564a973be6afa84056d78ca3ab94c8dedbfd5e8cc0f55993. 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/396a8817-9239-4070-982a-64cc33d9e72c.json and https://artists.proofprofile.net/proofs/artist/396a8817-9239-4070-982a-64cc33d9e72c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Aarkkariyam (Original Motion Picture Soundtrack)
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 0xbd8d81e81ac8b63c4674eb2e47deee57458f93a77399108370b9eb11a3e7778d. 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/INO332100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1859428c7568e4f6d08a0c47b2712c0a1b9f8a93ab67607143aa0731952d9f37. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/INO332100024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7915bcdc623affeed5f527c9f371f93dec5a4cb8a6b4e9b7802e06fe02a94ba. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/INO332100025.
18AM Padi (Original Motion Picture Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598b109417a82b83b8946777e21744c0a0e99196a1a1c1231ebc9210739ae448. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INA981900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2664c3c57c19f7697775a2397a1cfbffb961fe516116395d9f69d6307a6f0e32. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/INA981900159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb03120626f6380b03a5683079d0e810764cf9be214d6b3f8aac23016f299b7b2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INA981900175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44e1d8d29fc1a60a0de0e96c70f77994e4e2d15a32f07c764fb12762f8f1a53b. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INA981900354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c1162e45488f25aa2dacb5fe2e8f20b26a8833ba0c7ef54e81e2922cd0d121d. 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/INA981900372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2baf1cad0ded89394f318f0c1c5088ff4717bcbe4916bb7a59b9eaf7190b73ab. Chain 2 (Bitcoin): anchored in block 960185 (2026-07-30T01:32:48Z), 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/INA981900417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf211899b59ed52542dc09d0221545f22252c26b6a3b0eff8a08bf72d49626712. 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/INA981900419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7070df529183ef9279e676d23d100d708f007452e5443016003dc5aeb5bfd0d. 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/INA981900421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88fd28f1e948585dbadb0ee66492d6c74154a1a0b33738d221dfb42dd34bf1cf. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/INA981900420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e75d68b92692d0db922a10d6cfed0685708ddb5279f769caf331401005a228. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/INA981900430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5611657a8e3a5167aba1570b6898efed636f83cd9af9c867c53923ddddb97c78. 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/INA981900418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a697b96dc587d2ac12e4b0918d1ae031ba06e0cd1dbc63f2c668469a7558899. 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/INA981900424.