thumb|A Campbell–Stokes sunshine recorder A sunshine recorder is a device that records the amount of sunshine at a given location or region at any time. The results provide information about the weat
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 0x014dd584282feac99ffc3e805386cc11bc569dcc0dd7708d0651c5e0611a5f9b. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3dc4b04f-8a95-4e5e-83c3-e69302c3b330.json and https://artists.proofprofile.net/proofs/artist/3dc4b04f-8a95-4e5e-83c3-e69302c3b330.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 0xfe11dfa2b098f6dd32176d82685cb24918db83f551ca6ffe3478c43d8bf140ae. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S2205520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae8cb908e85c8918c6bae6ae6989bab2d209f5a6dbf5fc2c809feec23fd9c06b. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/BEO872500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2de13be4ce45e5e4b673b56abdadee58fc65fcce6f880d10cb438b51971be8. 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/QM24S2006666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2afa5b7b9eb3296dd8895fff396dd1d3900db790311b82fba0b6df6f15e23d. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QM24S2006668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7b6b3501dcd109e9f20949959101c78f258f1b6b9eaa9612e90ec3cac68ccb. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM24S2006664.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aaad282033bf253c9c026d1477074e3101d8b3773ac3b48260ebfef923a0a08. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S2006822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a6766e9b163dd8d181b40e0b20155676ce61643138e41bde40dc82f2680bb1. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5AB1898615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457e323f2f62f292da0b744200df8019635756f0912f81102c30fd93858c8284. 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/QZ5AB1898616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c69d42f3d5e8bfe0dfa9a3645e4872197d1e3c8e8c6eedd26d4fac94013efbb. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:05:26Z), 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/QZ5AB1898617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7963da9a49c4e5a19181ed3faa97b3231f2f5bee16dc08ccbcd65abd5b75199c. 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/QZ5AB1898618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79a028d3a6d4acb751ea60fde4fc733286570ca094b9a764e1b5a924b0b7a0d5. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZ5AB1898619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77843da0f2bdc96b71fd451a6b4a9ef7c38d38baccc8e2b91fd21cfa7b2c581b. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZ5AB1898620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x991fc12050ca8e83456935e113e187b0c5c20fa28096b5f1221e1389f8dce8b2. 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/QZ5AB1898621.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ee40b8404889894f3863fbc3506af315386aa3c257d6a76b78997a13e07820. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZ5AB1898622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf42a6e21364b532c4acda8b2d426d7ec3cadacb106e775621e718ce9eabdd54f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S2305350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42af6673c66916f2addc61f2a4e94608f139f290f4a7ab85a3667923fe455189. 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/QM24S2304392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed7d9d89755a581e9d2de45d77bfce4c26a76cbacf0ce65750e3e0b67335daf. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZFYZ2282454.
Today, The Sunrise Looks Like It Can Hold Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95df6751992df99e3a978e3f7aacd7287bc260ccfc0cd3fac9bf91c9a9cf7fb9. 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/QM24S2105141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70db8b59ddc53665bfa7fd55ff62850e89499ac5e37730a9aefd394c0b69d551. 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/QM24S2105138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6bf594d0c7ea0f249bc07b35615bcc726b1c24c2c916d67f0bb61390629cd07. 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/QM24S2009956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ad4cc7481619f509d48335d56ff4724cf5a8af4760d4c482ae56245a790596. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S2008059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b2de13be4ce45e5e4b673b56abdadee58fc65fcce6f880d10cb438b51971be8. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QM24S2006666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ad4cc7481619f509d48335d56ff4724cf5a8af4760d4c482ae56245a790596. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM24S2008059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b429b119f3840cae5b3a52473a6784f519be85a5ad0266877500c850f6c98a. 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/QM24S1827200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba85c1b1aa452cce0bd9eca055c8b1c58c1e4f99802f83732bde91d356399660. 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/QM24S2306612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02bb4009b75f432de5d64d904a7c551d4b9b1957863c9b5f80080a1f771820b. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM24S2306608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2375aa415ef5b56bfdc16680ac42171312989f519499995eab6c4208ea01fe8a. 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/QM24S2002618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba619e5472cbed0a2cda799b51c360788a5942d0b4476f96051a62ad7e9a4115. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/QM24S2204273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8fc86be54f435447688057feb00b0960b3c503ac03025f2ed0c48c76a3349c6. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM24S1912553.