S13 may refer to: Aviation Beriev S-13, an abandoned Soviet reconnaissance aircraft project Fokker S-13, a German trainer Letov Š-13, a Czechoslovak fighter aircraft SIAI S.13, an Italian recon
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 0xa86adf5d3681d04f6532f58a0bcfcaa72a632794cb9e9c2a1f2e4ee106ca3ed6. 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/91bce1d6-cd9f-465c-b65b-4aa02957c14c.json and https://artists.proofprofile.net/proofs/artist/91bce1d6-cd9f-465c-b65b-4aa02957c14c.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 0x06e9265b7fb3af741b94778f25dd70f1f81a761933435bb5cccb6817aa7d151c. 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/SGB502327481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f2546bbef5e7515c8519c8b6c309c9ab2e7d75dfdd2c241a0fca32ec81590a2. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/US23A1554359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea69a24baadc88847e3ec67e676c6208bbfead3bc12f52e187bab424da74c281. 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/GBCUW1900042.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b013a24e2554efe1470d156406d872c225533f1ecca188f7e3641da1833aa0. 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/GBCUW1900043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5d203475a4c22f8dcd013845c745881c8874c88aa51b011f6969e144857fd8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCUW1900044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeaadc4965a98d4301b83115b06cf19d01b0b4eca39985aa7538e6d67d0431e8c. 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/GBCUW1900046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd872113d0341b329dbecc99e59d7854bfc643bce3221094856c940dbd7d84a9c. 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/GBCUW1900086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a19daf612214e121b1cd6da3e6e44e552f07cc795d772a80c472818b21016a. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBCUW1900047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bd503b5dc2e2a5b73213dfa6ee87fcde9e61710496c6962b097da3147f54db4. 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/GBCUW1900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed5a38a6891b9752e2694a9beffacbfc71f445d318a2fab0b8010fb4374b6c05. 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/GBCUW1900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1eaaf43500c9a6010d3a4aafa765e66586140bc64372607b2e4dc0d9b0713b36. 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/GBCUW1900050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc23c1eb3793aa41d1a74637e385be7c1e9dc0f8d2fee373ea0ba59d930949a7e. 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/GBCUW1900051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a722844aa63c513b0f98a4bbe7c47f586bd3790b4311c4c4fbe2688eedfb75e. 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/GBKQU2491904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b35af024bdc24af7144b7bab6889a224fe43ca03ebb04d54427d04a43ff26fa. 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/USA2P2139887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8adee16b3bc9c1f86b3a7b3a81c5d453dded6eb07fc98ff0aa3414e46ff50053. 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/GBMA22198622.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96fc32b26b83b3739a0c1233996e4d8dc1b10c1b241eba0df4d21ab252c19276. 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/QZ93L2001916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5462923f46aa25d8f936cb6f27bb1b8e1ef6684dfba8c8c2b2a5fc10b68faef6. 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/SE6HN1926611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d940592a13d4ca269a89e2dd4ac9cccc405337a7d06ff7356da667fd61e2e54. 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/ESA012501018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b8b53875d5bab201d00ce5128ae713de25a7f4a2e8b1a4e4c6dd646442afa1. 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/ESA012501019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58dc6eef99fb72f8c8c3ce20efef5608014b2ea8ef78c871c683a7ab0f2cb4d7. 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/ESA012501020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6860b826f05c565c5171423daeb661277a22c80515141acf017e03fef8846ea. 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/ESA012501021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd1a190d34bd2a6ba1f1d8f1941e9b7367b1363c3f9652df800f72ddfe329a65. 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/ESA012501022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6ce0a8766362b4e579c3f664de049e30dba733ac2e44ea9b19b351973bf0cde. 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/ESA012501023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36745a1dd0e2798503ee724b55688f2cb8cc8fa19eea09aeeadd18d44154431. 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/ESA012501024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2b8661cf0c3493e04a91f1ac523d020f56aed4ad973f21c399b69cc12752187. 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/ESA012501026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x462e1164bbbc1f666d88046d6a8da0c685758da134b8aafd7b0d201b6bc2f85f. 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/ESA012501029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863f1d18ccd792c147969390c675f3aedd0f00e1af63e7606f01f74ff06335f2. 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/ESA012501045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f7a22277012ed59826b3716bb1cdb901a3ceccb718c4e078af07afcb29940e. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ESA012501046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50f05c1aeef358e7f7ae845e7bba52d79b18970524d905e64f77280285bfe062. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ESA012501047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7fadfc717d7b8fd11e7dcfd1eee0c6fd3e776ad853e5e8903e78ec08b803758. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ESA012501048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83f929b0e5d04efd8bd80f89ec7dbe77d7fad9a0a1fbf244df320c0c7b941bb. 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/ESA012501049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6835b9e530197be42cb812be3593a3d28992d057cec8bb772d70b12508ea0d8f. 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/ESA012501050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d24e9d1cb1d6cc2f4b2dae313fa57f5287edc60f7d9ca5db75bbddfb32616a5. 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/ESA012501051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12aafc3deddd50d3613924761d19ebb9a63d0ebf4ee08987b70e3b222c0bc318. 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/ESA012501053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23fccb98488336debc022b7f59e92124a492eef65e6f4adadd2049f9c0545a88. 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/ESA012501054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc71ecb28192c9140e6c0a70926e543d92c31a12305cede220b810979a340f234. 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/ESA012501055.
CGE TT x S13 x Mobz x Fumez The Engineer - Plugged In Freestyle
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834f776f393009bc92080eeab0d5017aa06e6d1e9cf88d63f21a3e99a9ddf710. 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/SE6A92048246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12645b1828fe718ee4489a0d1473feb2ef5c172edc4dc5be158836398121c949. 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/QZTB42485428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb20e71d9d0f1151d4041444e8ec18162381d56fe6d323c4d6cc7d70fdde89ac. 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/QZTB32403375.