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 0x2508bed138f4745fcbb7f7da905eed98f8b1d762c4d1fa38f4b77f8343043742. 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/3cd96009-252f-4956-b7d8-812dd136d057.json and https://artists.proofprofile.net/proofs/artist/3cd96009-252f-4956-b7d8-812dd136d057.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 0x1af0a2cc5a542b7d718c4bd01bcff65b9c3ee57f59542e1b1b1bf0cd28d6ac0d. 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/QZJ842003397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ccfced399b9d8b290d23947688112a86edc17381af714a4f6b156f6cd15909. 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/QZJ842003398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5c091fc4158f44954025d01450186b0eb492dfbcde461d4c1f638adf7194298. 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/QZJ842003399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fcce7733d2e1607fa9346ba9451386bb65f5b17d4664d488ce32b71668f13a. 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/QZJ842003400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c7581609a3e56d01cc0989910e9377e6b75f7443b1379009e72983cd3f0d42a. 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/QZJ842003401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ec8fc9e1728aab10b843c05a228cb61a2364474f9c60b6ae1e927f8e5cb3318. 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/QZJ842003402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e59af0e645a00556a43f8fcf867ac3082f509a6f28a0564eb933812ff100ae. 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/QZFZ42313410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x395d4bec8faf0437a227b62b4eb767f1484ddff737a7c3c2c18c10dd30bfe437. 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/QZJ842003403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b01bf39674c61c8a187775f1d15660fde7cec01138dbf3ab6d3b03e6abb4ff1. 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/QZJ842003404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fac5d31452087281d093f2e85d860c9ed270ef271342ffaa93a35946f308ff0. 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/QZJ842003405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c0351b9b18a083300ce79218cd164fa0ef40f0a2536ee2b578569409f3631ac. 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/QZJ842003406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87c717d407bad9db61defb057780fd4d37cfafafd4d90863af4c4cd72dfc9a0. 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/QZJ842401058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63f9efe89095242f406a4ef09270802d50a9adf237e0bfde0296b753e1ad96e. 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/QZJ842400466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf265b289fa8aa44e09d15c5b9ce811838ca76b9776979696fcf8651b84397053. 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/QZJ842400142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01061b2ce7813556bb676f131a91289518e66dfd009ce8b4650f56d25c8aedd0. 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/QZJ842003993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b067712b57021e2e6a5fa24cd0120f258234fe0bad380f14766eb65e7493172. 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/QZJ842003994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2659276d87fcb25f5a6a5bac548d724a4cac95fba43a17cce79f56073dfe4e19. 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/QZJ842003995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d743c3d81b5e16eb7bfaa0e762e4b6a756c68aea0fcdeaaab11d3e6457388f. 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/QZJ842003996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7397db1f35a9557eb3c699abf064443c17bf3be2ba120b0c8c9eb50733ff3dfa. 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/QZJ842003997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9382a3639b372953e1ca0d6bec5f23d6de1be916d83918b374686d1ee6d78cc. 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/QZJ842003998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a1fce97cde8bff65dd320c4492c7a743242e4ed7477dad40a6455b5d66e125. 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/QZJ842003999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c0a46ef47796f320bcabcb341a9ab7f6468f1afc96a7ed503ce8b86f0818186. 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/QZJ842004000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x189a93afdd029c0d3df854d4df38338b3ef0d7f0bcb5ff789bb4d12078bdb98d. 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/QZJ842004001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeac498eb9a8144a796fd69dbe66b838aef25f3a31a660b7d6a1c378dd418f5e. 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/QZJ842003894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47ff1b32be55bc93393a6f810add1b5a8b7987cbec34a40abe48f997f7610ce. 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/QZJ842003895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1af0a2cc5a542b7d718c4bd01bcff65b9c3ee57f59542e1b1b1bf0cd28d6ac0d. 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/QZJ842003397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e59af0e645a00556a43f8fcf867ac3082f509a6f28a0564eb933812ff100ae. 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/QZFZ42313410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad133dcc487d515591bb46ab7938f42f64894f8d1ed3936ddd5658464dca5b2. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/QZTAX2271270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc43ee37875cf97b2be170bee4de36e6b06eec92c83bcc08fbb935cacc0557eea. 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/QZNWS2287518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2c4aaa5eb61b80ddc60b1867260a78542b326bbc363bc5ce0faa8ffae1da2d5. 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/QZMEM2250728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15527e8f4024d841a5d48cbed9476dcab8203cc20ece7a12af877ab27e5c1ca2. 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/QZK6M2250232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d72e0df0f56de2a0bd18c7b5dcd075c5106449d14b686495a1c5b18f63c3be1. 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/QZHN82252727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb69d9cf273dc280e76f4caff48724a8e2d5788a810338dd2cf8a9263f3db40d1. 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/QZHN82252728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x743c6ea08abe5c8cc963ea6f54ee7eb4d360b53538dbfc32c994a70513a1cef6. 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/QZHN82252729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0b4d2878be160789416de76dbe95289c9de43ecd3a6b73ef1445f963c4f6051. 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/QZHN82252730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x412926759675d163183166a2ce136f5b03cd905f557ef902ed5f279ca0280c47. 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/QZDA62203293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a74436eb9d02a09859430a2345f866700d1b02ff3c1a3bd4976d259b9e374b2. 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/QZFZ22215341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fe150ab7dd013c4693e4abd08abd2d49f7ece435d19c17341e532a2c641a9d2. 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/QZRP52171707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437e76bf9781c423ab2b551afe523e55d132b098e3eead159a47114312d780cf. 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/QZNWZ2136357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d3b0bc77c2798f25c39e5bc7ff72502a85c9035c4b654e115671f1034b1b77. 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/QZNWT2193912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2005c4ff85630e9f355cd0c1161ccd587a070aedd64a206fd6182caba7ba0ee2. 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/QZMER2125483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff304b071eed5844da67bf0e75172eca965cb2550f49e9421917ec6e90de03fa. 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/HKG731672236.