Sydney Sprague is an American singer-songwriter and multi-instrumentalist from Phoenix, Arizona. She is known for her alt-pop and indie rock style, often blending introspective lyrics with energetic i
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 0xc989b923a31a50ecba8b165d3435764955144573070216da938a5c20f7577024. 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/3aab5af0-adf5-4b43-8c94-20b35244f986.json and https://artists.proofprofile.net/proofs/artist/3aab5af0-adf5-4b43-8c94-20b35244f986.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
maybe i will see you at the end of the world
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 0xd415b187f3799db486244c7bde159c0891e977ee93227e77c3a90969e31c60e3. 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/ITH712000073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93beb353579adb45fb9c77bf357b4fe05684eab420871898cb2e37c71201f9a7. Chain 2 (Bitcoin): anchored in block 958322 (2026-07-16T23:22:54Z), 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/ITH712000080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c1459dc5de52b79c715b33611783134eed663ca84577748e949901968debd2. 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/ITH712000082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd498c606eeed61cbc96f7808469ffd3eda7db88e6e1a3141b93b2167ea872ae7. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:29:22Z), 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/ITH712000078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5db813f92b92fad4caff89380764c77d6b737e1105cef30dca8648752795d270. 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/ITH712000081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57b3cc4e8d9b249785facf95b9453b309a605ca9145ac41a7cee84cd38af61d0. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:51:41Z), 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/ITH712000077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x316c16dc46beaf42c220844b6ed51fc2e90db58af5b6950404aa4981a38a7385. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:07:07Z), 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/ITH712000079.
maybe i will see you at the end of the world (Deluxe)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a5c9c5ee86a57f76618f79b629a059e970adecf132bf723d05b3061e31772d. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/ITH712300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63cd7ab16d94055a4bcd31c004fef4578b16a31a29c365ce8cb651f873b9ed9. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/ITH712300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75ed60ba4c66f0f358630ffc810d09166c8a6591c74bada684147d49e36f12b. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/ITH712300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8465daa2ed25a2ba25ab0ea9dcf2e8fe120062f6e392ffe002c4799b7e46381. 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/ITH712300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf44e836d019ad2e7e9cb72c13b8e19e6b4fa6d4a0c31ff78e6d6bf0384879a8. 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/ITH712300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf016baa36604a3c22f15a2ab3255f3a8c890c24a406b0ee735232e3ca6ae8eff. 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/ITH712300017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3367967ea84c832fd96b218462f54b07c710a91a9811235e9037cf9a0ca017c. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/ITH712300018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf36c66d17d7682915ddcd1e7e74d532a017232f91b5574556b54cec5e4721b. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:01:58Z), 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/ITH712300162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a5c9c5ee86a57f76618f79b629a059e970adecf132bf723d05b3061e31772d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/ITH712300009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe63cd7ab16d94055a4bcd31c004fef4578b16a31a29c365ce8cb651f873b9ed9. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/ITH712300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd75ed60ba4c66f0f358630ffc810d09166c8a6591c74bada684147d49e36f12b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:48:38Z), 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/ITH712300011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8465daa2ed25a2ba25ab0ea9dcf2e8fe120062f6e392ffe002c4799b7e46381. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ITH712300012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5fceefff9ec51036f81b0cd139b0f564c13ccf6536aef0cf4482d48d1d9c6a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/ITH712400036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd583a25788c776bf6e2f4514c45d2838b99e935e8d75382fe02bfdc98762ab05. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:20:46Z), 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/ITH712300014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf44e836d019ad2e7e9cb72c13b8e19e6b4fa6d4a0c31ff78e6d6bf0384879a8. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITH712300015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2b45c5231c88c3a8adc63660eeba5c942d335748028c6d58ce2e87abbffac9. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:37:44Z), 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/ITH712400037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30fa3359a0891042b52833a46ffc4f0f2d139ca35b891ac1bc0f6fc4e0de9959. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/ITH712400035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c36160f20d69af6a148de1e53e3fcbc5e4dabee690b3e24632b899f72d46aa5. 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/QZNWP2473906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c36160f20d69af6a148de1e53e3fcbc5e4dabee690b3e24632b899f72d46aa5. 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/QZNWP2473906.
Sanity for Summer (feat. Justin Courtney Pierre and Sydney Sprague)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x631428968fc529ebb28f622422e8d0b318992530fa3a17134ca7168ef4fe91dd. 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/USF283062020.