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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa04aef367923da9ed53afba77fd9c92f0b243ca1fc6f096fa2820e9e1475870f. 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/f0237755-9202-49f1-84a8-31025fc371f1.json and https://artists.proofprofile.net/proofs/artist/f0237755-9202-49f1-84a8-31025fc371f1.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 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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14df69abea7d8f159cb2e57f55716b7558ac3bcaa242cb6153bc110e7067b429. 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/TCACA1490242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad07db76a2d37223718fb1cbe51dd90560fb7815025b64f12e3d7b66ec75406. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCACA1490426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183ac76d722e4a756410e8e23747dd732527398bc0e29341db9f1696f7879097. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCACA1490565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ba23e2e2c0191e5aa43245e3aa57af2c0e612ad65feaf19422d4384739f3c3. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/TCACA1490582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3cc2ae9c67bede7bf13928345f6fbbca094ccb93f5bcadf464593014615651c. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T19:26:13Z), 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/TCACA1490586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba6ce949ad525773da870d993415f4a13909f6b48dde1f55f9f06e4f09a3d9b. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/TCACQ1675152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17926264c56f2b9697e67e14e1c30b46cacc6cce555c8b78ee5e65381a2b7324. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/TCACQ1675169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52d1d61ab4aac8fabd7ebe0cc5dad45de109b66725446048e2a57eab55719a0. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCACQ1675173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8fb7faa55e9c5f65ba79def1de2d48e48604bca15ba531166d57d2442e683c5. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T01:09:53Z), 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/TCACQ1675180.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf333755eefd070742d9f65c04f8f24ad881c68c65f9e1e81a24ad647b7f733a5. 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/TCACQ1675212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa8696802a510c1773e6aa4742a40789a5541a8102d0797d4d5a8399c6c403b5. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/TCACQ1675390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2156037af433528a8e9b315d60c836c9ae29b0e3e0522320184cfcf2bb17cf2. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCACQ1675401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03b5324e22b941ada2eb036b2bb3f6aa5a3acf055ad8df364aa4e136575066a8. 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/TCACQ1675407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3396b8c3e66205d56a758dab91b7b99355000444df8a125a83ce5a067d036543. 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/TCACJ1532511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1eacdf45861d1fa20c355111418ae2e63cf65fbbd020dca3c40a9ec59d32c3d. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/TCACJ1532535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21cb123d823c2994b94d0d8177542ca5152167b74d7bbceeb0776761f9421bd6. 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/TCACJ1532538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79574ff5cfae7ecce2be34dbcbcf2300c2d4673e7c6316b0c9ca48ed1d4daa06. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/TCACJ1532540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fa653a75636d377093f0b173e495ab579ef0a62a19e0e76947a5fd409753798. 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/TCACJ1532550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d5193b6b28fde0ff75dd68f53c88c6fa6cf00d06008fd8c08b6ffe79d90534. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/TCACJ1532559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdecdff11cf1d94e2ce3e98f7b9a214d5788da4fa02e49e3c72744a77b175d31b. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCACJ1532560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d30ca00fc5121ea4ed09907defa15c37e0df26615d48904719c512d5a7127a0. 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/TCACJ1532589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e7bd8b43a388295b2be73f2a9f5e84d9f34f287ce2e1531e146587a6d68375a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCADY1834262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48c6b2a807c8c58e92cdf8d37747a168f2395edf3f350f519991036a379d720. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCADY1834269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcca39dab4e9c26abe7d13e09fc96b66d80547086cb0bed0014dd2a0dedc215a9. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/TCADY1834315.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca1479068d1bc675b644bd67289509ec249c323e54f20c8fc7678bde98e87e46. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAEE1985306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d29c521256ba789dae182825fefc8b41f5783cf1ce1f6291b21468186742dad. 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/TCAEE1985307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde23307481ba30609f0ff51beda0ba99e030abdfca6cf841e72ff676285dea28. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAEE1985309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x394b239950d83b61782fc060105fc67bc9b409cf7cca6f7760de9b3ecf7fd9ce. 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/TCAEE1985336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x903de49c7e785e86c4930a4589ebe3e592a05fdd962dc832ab7cc2369805c98d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/TCAEE1985338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee10dd75889e4fd2825708773744a6be0ad195d84174b5e6baf4ebc9176b2b8. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/TCAEE1985339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd67f3c28bc19c0fa7c02bd52e9e881f38ad01176f5a633fc67814bfe11b99263. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/TCAEE1985362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e236c8f18b2227928f6daf833765e279910a36bfaa3f77acfa1760fe987c407. 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/RUA1D2317657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a8a0244e6e981d06d0f13dbf23bc3ae6f43e1261a377f3f9a21262d5dc69684. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/RUA1D2373164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf306057145cfec9efa98e6aa801c5e0ce0e2ec385d205db0a98b415110c1f710. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/RUA1D2436261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a10dfa1f210ce40c6edbf9706c32d63aa6b04975457a53291db8027adfc36f0. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/RUAGT2347479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3e856e20c95ab84a44064cd28f17d6c4a4b7f14cf5d3bcd823689700402e33. 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/RUA1D2469312.
Конь (Любэ 35. Всё опять начинается. Трибьют)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bd8ab119f95c9cfd3ac7e3415c1facbaa1123814a4b59ec40b660593340c408. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/RUA842419306.