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 0xb6a479b3567fc02ff9835da391a8f7db6690db72682635d7918f3ecbb3560582. 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/27e54953-7b5e-40fc-82b9-40d4caec7b60.json and https://artists.proofprofile.net/proofs/artist/27e54953-7b5e-40fc-82b9-40d4caec7b60.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 0xdd03c0588a312ce0ba238e7b0d32456987d34fb0f2227ac4d9d993a41cce9a9d. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/FRX872137176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a6e560762b45240b96558548c8a3a20b173d71ff7d06c8de73d58d04ec254a. 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/FR59R2219003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x040c9da6096096b0cafe8aff56d2339ff54f95caa0f466fb0f390a972a17fd4a. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/FR2X42232625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc04a65ca6d7b2c5445e6f6de4370564850c7966ef72c0932e4db4d90751b474c. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/FR2X42270530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf698c17081d0d21f525f8e1cbf630fe16f5b041b1ccec3f5c62ebfd6dd3d0a51. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T21:34:21Z), 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/FR2X42270532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebd62b74ef19ad39c574570291b49b4cbbda3051b865fa63d643974475ec6a28. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T02:01:41Z), 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/FR59R2224045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97f95b1466297367504fd297d7c31eabc1f96e43d40ca1c14ef7d1f17fcbc7d8. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/FR59R2224046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf10ea4f4b586a5f851614d5a7a6e9e7546842095a6f462187420fe7085e27ab. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/FR59R2224047.
Hembusan Nafasku Merindukanmu (Remaster)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5a8c2cfc63df767e04ca7b1db719530a57f6844af76d4baa952ed3379e2fc08. 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/FRX872141061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8e2b9947ff6d023e270fe294f122b7abccf6637dc557fcc6c499adec46ea98. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/FRS182138169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9c91bee4d7f64c41b2314d1790f5e7f609f835238042673f0385302c162ba98. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/FRS182165959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b06aab5ab344eacb3cd189ebe91cdcd6242188c186123c664a6b7d36dc4f99. Chain 2 (Bitcoin): anchored in block 957596 (2026-07-11T18:43:56Z), 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/FRX762259877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41f011f3e1e4d812e221b0ab479bb5be5caaeeea2e7337da2e1549a31e511e12. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/FRX762259879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2bb55395196e7af678bae3071916fe7ae9879aa3423bde933ee7c3caa54c26. Chain 2 (Bitcoin): anchored in block 959013 (2026-07-21T13:39:11Z), 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/FRX282216729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe599facc9331b3881e8e99516d17afaf3389ef6eaf794c41436962ee31acb05d. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FRX452233657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1598e4b49fa7afe9a205fa45a0d4132a50632e3cfdc43a7c6056fbbbb3c7de5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/FRX762260492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5986f67ec04cab715569e6b4c21aab2d6e2522f4b1a7e5b6649befaf3cf944c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/FR2X42447329.
MSM (Mencintaimu Sungguh Membahagiakanku)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7743d046435acfb25c0ebd7a177a79c867cb7fb3e58a01851ab2b0eec1a321a4. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GXD7V2416146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e3239693bf05c6e6b6bbc70ee3558b26b0a05bfc64aa99eb90fc42ec04c88f. 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/SGW502285640.