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 0x34f8ac036552c68b9497943d86bd06e0766171793f525ef5d2ebf07af05ed3ce. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/20e74da7-13de-46f3-b784-06bb1b41a4e8.json and https://artists.proofprofile.net/proofs/artist/20e74da7-13de-46f3-b784-06bb1b41a4e8.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 0xeba4e598ad72b505aa04d80048f3999c8220cb152e67b4e341754de690e89a4b. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/FR59R2037208.
HAHOLONGI MA SI DOLI I (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ca4d50b8b443aabf2dfedf5d2271f1962f3550d9e50468af87b7551b9f59648. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-19T21:40:06Z), 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/FRX762015190.
HAHOLONGI MA SI DOLI BALASAN/ HAHOLONGI MA SI BORU
Dang Hasuhatan Burjumi Inang (Kompilasi)
Mangoloi Jahowa(Koor Ama Exaudi) [Minus One]
Jahowa Siparmahan Au(Koor Ama Exaudi) [Minus One]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c04499380f87c01d1c6a800294a5d8b239b75dc6c884ac29887af99d23bddf. 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/FRX202093629.
Jahowa do Partanobatoanku(Koor Ama Exaudi) [Minus One]
Mauliate Ma Amang Inang (Trimakasih Ayah-Bunda)
Namardalan do pe Hita(Koor Ama Exaudi) [Minus One]
HAHOLONGI MA SIADOPAN MI (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e4b41df775a9755058f615ca0d097e901da50ef0dc9509136570ec227fd7ccf. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/FR59R2032139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5424947d33cee0d6d0d71d59d6c10f49067d6a3b256edd2f1a78bd98f8d6dd62. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR59R2049860.
Borhat Ma Ho Boru (Selamat Bahagia Putriku)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8386b396e13b7b9a8696a41f832e0c98b52d98b47f182dbf2a3541a0ad47ff5. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR59R2034665.
Nunga Adong Nampuna Au (Ku Sudah Ada Yang Punya)
Memory Holong Di Sipincur (Kisah Cinta di Sipincur)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x379deb74b4ced00fde371d2a2f477ea68e024fa9bcdcfc4c2ace26cb95004696. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:19:56Z), 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/FR59R2082077.
DAO DO AU SIAN ORANG KETIGA (Karaoke Version)
Di Ekkel mi do Gogokku (Karaoke Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55b357faab9b1e61a26f594902dd378c10609fbd8a271468a5a1767df999c0f7. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR2X42190010.
Nun Di Bukit Yang Jauh (Instrument Seruling)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80650cd4876be7e84ea327110e04cd65a4b9ab50c286f73bef8e4fbbe99224fd. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:08:48Z), 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/FRS182169823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c7efcf4d191afd753f030748a3f6e5bdacac356592165b8dcb3c7e97cc5976. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/FR59R2262010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x873417e0b70f8e3744d3f5d19ed45a53c6128781e7e8f5b1d94cae79827fee8c. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR2X42381594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e2388711a77e35eb6d8286726c36a34cc01b86f1ff49e92e5bf52d60b3b0e98. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FRX872336713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7caf0b26948cef91d8dcb1f0088b96d5e9639339806f7852023ee6fb2a1060dd. 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/FRX762538882.