Sudarwati (; 1 November 1937 – 10 April 2025), better known by her stage name Titiek Puspa (), was an Indonesian singer and songwriter. In 2009, Rolling Stone Indonesia selected two of Puspa's songs a
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 0x0247d59aff34651b8e13681b8bc4a771c8d11685103c99fb869a5c118a7af63a. 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/7ae2d622-86b7-46ed-b1b0-596d996b3613.json and https://artists.proofprofile.net/proofs/artist/7ae2d622-86b7-46ed-b1b0-596d996b3613.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 0xaebb45a3c9b06ec31c2f4160be64f4de87f0bf8415c8c30eff86f1fdeb1b9a72. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:49:39Z), 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/UKFT41808968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d92df5a15aac3d901317f6d52b6f7536c4bd3abf20d9be3c857df7bacfc4be1. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/UKFT41808955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1e65e18e93ca7d1f1ad58b8f1ce65cd763689549d3f26c0bd8d6c280c52b279. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/UKFT41808974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe70bf50b12b1bade933c51a160259c1567778faed909124e67e20389d4b722da. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:26:00Z), 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/UKFT41808958.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x325c1957e42d7fd9cbc4befc1de03e6659c4f33319d6f2caa83431a5f5052e95. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/UKFT41808956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcd8c3f849d265c4e934dead8d2ab12ff58ca97a8e872dbe61a091d7ff075c6f. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/UKFT41808973.
The Very Best of Titiek Puspa (Koleksi Lengkap)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab0f0331615304a97136177596b188cef59d0a28d748048878ad393dcf5d5012. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:45:29Z), 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/IDA181102742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x752f3f3ea06f77b0a54c2a78fb872cecb53dbfe4c24ce2f6c417db4b84d1f7e4. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IDA181216403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x326b3b5ebc31af5761cd2a09d0ef9458ca4f1d9ce5f15b0a8927f549d20bf4fa. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:47:57Z), 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/IDA882025094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87cf9ea656811779726869da03c1f11b9d0d976529adc4e80805049110d37e01. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/IDA181235510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9369f12b992d3fc839ac9e6f7e5b9965d7eb652183c04322abc30f743b9546bc. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/IDA182132299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08deaa24f62439d26d8baf0a171fbffbd341576e15b29b5684cc833e0a22a42. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:57:21Z), 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/IDA182132302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3244e2ca92f0079b0fd219b5741ab5ded82b9ad171f3340d456e69570abde4df. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IDA182132305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb244a8c213ef89767abd30838dee04ce5c9a68b97a31a47511fd1c795ebb2418. 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/IDA182335708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d29cea8f716924abf481ff5f0df51d967d404b8903f92165f1cddb07732732. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:11:35Z), 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/IDA181500446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43dcd8ef220173d140f0373c9ff235cd44e78af17e810b74b2c5cd6c1cc4c9f9. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/IDA182400101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2d6e0342c4f62c85c5c1b22923bda6a4a46e047fb94ac46abe28c10815bef1. 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/IDA182400334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x691aba4604823e510b38196384014a8254bae3faebd1f85500d51a5869107334. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/IDA182400336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84581345a9e81c97d2cd2e2b9204c512c9bd9835edeb4bba959494ff0d2607a8. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/IDA182400564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85e8f0fde5c27639540c2dbc382a7bc21ac0341772643ac152458cb00f492547. 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/IDA182400565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8d75c0215e2db21d508b420da303a3d3f9b8c70134b2ed23169c8d5912bb9b. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/IDA182400566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f069be321b05693a62ad9a3559c8bca71b1fe2b2609ccec80476b2604686beb. 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/IDA182400570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa94e5d65fb47df5cb64b7aaa68ad75d1a3301be19fa17b40029b3f14145527e. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:36:24Z), 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/IDA182400572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58cd0f9494a840dd89b2c63c8b600deea5461f9cdf5de9536694f6ba7dc6aed1. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/IDA182400573.