alt=A hazy cityscape to the right and a clear one to the left|thumb|Smog and a sunny day within a 10-day interval in Fanhe, China Smog, or smoke fog, is a type of intense air pollution. The word "smo
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 0x39ac2b168abd4af385d04225ea38e5c3558acc877bfe2d034ed61e41e7853d74. 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/adf686ea-8866-4478-80f2-c7a42c746496.json and https://artists.proofprofile.net/proofs/artist/adf686ea-8866-4478-80f2-c7a42c746496.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 0x6e99a91d52c5da9b3d5b18c6bd0c64249a0ca217b8999415ce168a4b03bdac23. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US58L0503101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5b2327c96ba61a99af3772e6065e601e4a1a353da41410dd91ba390ed5581e. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:03:10Z), 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/US58L0503102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x318c27a4cdcb82327d179bc430792ec5b88876d77bf8533fc94ab727b71f9090. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T01:03:05Z), 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/US58L0503103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac4d6a6930b64dff53e03bcca39f72fff92c4a53bfe52cf39ee682579af105c. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/US58L0503111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9be80b5eb04b65202b5fc11eea0500f2816d63ff11138830898379f28aabb74c. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US58L0506004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a05598913ec059714a781fe2ff7341b673d61bdb08df41afaf3e07ccfd3f494. 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/US58L0506007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8550a96765a85891e4b5d489da96a5e3ee3edfb4bb0b654602b43f5fea16b78. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/US58L0506012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f10d6d7993eaa8e9b896a89324643ca7fabc077154296c78a146e7e0e19470. 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/US58L0508102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9074c62bd6c2802f2de723ad163e2c127abd621b79cced12e79d708160c34169. 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/US58L0508103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108a0fb15930b406dcc69d0c5d7aff60cf03458dd06fe84005d53bc733c48e63. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/US58L0509501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ff71cc2ca4a62ab1145e302d671126756ca36d4ccca6fbe71b6ffe62479faf2. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/US58L0509502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaae6f55d136c71adc04dd523c35e6069f5f57c326b664f76dc223cdf49cac7f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:29:12Z), 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/US58L0509503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00f5153924bbbcd517592826b3e68187bf34a3ded49ace591010b24344584093. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/US58L0509507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13a4213d785606cf59b5558c26721211ce473647f85466de45d9c7948ff1c154. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/US58L0511603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1bf441c78fcf2afeb29487f7442a2f665f6d4bbab95614c5a2164085d8e78a. Chain 2 (Bitcoin): anchored in block 957863 (2026-07-13T14:41:15Z), 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/US58L0511606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ddae3b2c5ebae4d33fdd60765b303a006e3dbc4459c8453e144c71b1bdb7fb8. 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/US58L0511608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x284c815efa4cb018346b51f2efbdf18042c33bce6b6a1a7684a6f0a734134133. 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/US58L0511609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb437e88941e2be01e33f508d7a10256442f9e3145d6631b16ae81d63c354b3e5. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/US58L0516901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e8c8b6e05f96e5fe2c9f8f6c2d28cc94898afa61abc740a23e47e6e5a6f665. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/US58L0516903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fec2992df558cc8317b24baa55e965ed90e78743dd4576937998b485e020fe2. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/US58L0516904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc292e2811d94dc36ca658e987174c0402fbc13c27706f3bb2810c989d6421b4c. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/US58L0516905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x346dd2c876f68712fc316726dc5d7458ed55a1ac4a804b9be65b557e0b8c3e5e. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/US58L0516906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb2960dcadb747b656b33435a556d4a7ff42dfb901308f2023325560268c696d. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:48:12Z), 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/US58L0516907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ec891806bb2c7a0095718d9903056ab6cd407ae20182ba7ffb3e95509e100af. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:21:18Z), 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/US58L0516908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f7cae1b6807114da15a150ce8f44755142a33beab300c4726758199f48147a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T23:12:01Z), 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/US58L0516910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f33f6de2634c8c2b68db667ac6ffc48b07c22934eb1d15cc5f5b39ec7a5f75. 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/US58L0516911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff7f994c887f55bc9d715ba828edb162ed8ccd553b0b3638247c10744c2ab0c. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/US58L0518701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x227d71ae7d47b8b9224d64b505731bde0dab21c23f81979cd60d96cc50502c85. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:26:11Z), 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/US58L0518702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe939896eca0e8102a1278dd2a13b1f4844dbc4a85f785e335b1a2e06cfa39d8e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/US58L0518703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381337a246dc921fa352f049d57f27f52d60a9b121502a1cfb4243f3e80c3160. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/US58L0518704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae3be714d8994228ca66acd809c5bed53c0b47797e32906c8a8f45bf26fcfebe. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/US58L0518705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27500d0f677c18e72e6ba9aee199bc9cca10af5860b4229452486ab476930896. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:33:06Z), 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/US58L0518707.
Live As If Someone Is Always Watching You
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8ad85df89ce5a05e2537ed4e6630b5b4ba9f74f65826b266e4cf4f8563cac1f. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:29:31Z), 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/US58L0518708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1be1daea3ff6e2cffadb182dd1bbe769c2fc54e40bdbdd9cf7b7e29626696d9. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T08:56:51Z), 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/US58L0520002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dfcc27944ea4f5e11a9b72caf70f053628940d7df457871898fbe6c23662540. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T10:56:49Z), 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/US58L0520004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb4c718d2c6e0d70ae07a810bd60ed8823b755b15fe58d06ce9525b7b57ff71a. Chain 2 (Bitcoin): anchored in block 957867 (2026-07-13T14:55:20Z), 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/US58L0520011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4331c7efe07d0e7f2314939fd5dbea63517b4c63dac52763b94b6a7b418a58. 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/US58L0523503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb493d4995fdce8ce05d0de58f7d163ec0e39e06bbabd4193740046d3ceef7959. 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/US58L0523504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa52f53fe005c01d1eac658703e7f64ca52efbe200c4725ac986188b018961d1d. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:51:38Z), 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/US58L0523508.
She Will Have Her Way - The Songs Of Tim & Neil Finn
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dac2671f2cfa6ca2c48e70f00d3c48b4806c956164e8cbfd79bba2d2bae3cc. 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/AUEI10600018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb174f68dd3802bf9333d450dabdea8041685745aedacc868a01e853aa7728f80. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/US58L0502005.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch