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 0x32a4b3d2ffe5eacfbc04bbe279a08cb15744ee4ced3e584f1f6793ba5ea0ad8f. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c4a71cfd-da32-41fd-b777-e182f6ed9238.json and https://artists.proofprofile.net/proofs/artist/c4a71cfd-da32-41fd-b777-e182f6ed9238.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 0x96ed7f201374c07443418df5b4f8c960efcbe3bc8979a9b6609a310672be85e1. 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/QZHN32198460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf407ea03163108d79eeab9e191f328a3e46ce2c7eb9e978a94324007825de45. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/QZHN32198462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd199a1a23ec780b29016a7388b0aabd9820cc3297ce37793939b54f0c72568fa. Chain 2 (Bitcoin): anchored in block 958834 (2026-07-20T05:55:47Z), 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/QZHN32198463.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaac273b3c01558fcd40e43159299b6b6e8fffa0a2d61458d7b0eddca1d0405af. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/QZTAZ2262298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb30f9428f510194dd97b5fd480bcfd3d845d159ce5fd0b588cf788c2ce0db8. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/QZMEM2200757.
Separation Anxiety of the Celestial Sort
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3c56522c3b9f3450f399271282db82cff9156a3bbf9b1729d421813322e12f. 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/QZTAZ2262299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40c236c7f45bcb56b1bba59b4e574d9f76ab27865a9e94fc486f2cf0c5abd33. 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/QZTAZ2262300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1696f5e6f0cb9a7da6ad6d408a470b3039794f8b0c3b3c283810b5b040684df7. 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/QZTAZ2262301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca57d10817a410c36c0bad95dfb858206c0f9365b58633e6bf3ebfa8bc94d1f. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/QZTAZ2262302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2c8c34461d89acf8a91566549b0f74285355cb5b1ae43c6a080ee7043ba451c. 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/QZTAZ2262303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbedb1f1243d08ccb98654528e6856411ebea9a0bb7663116f9fb572783a67283. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZPLR2295965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b9cfad9225b6cd6b7b484c314f45c8fc17030c4495d967b38e0060abd595422. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/QZTAZ2262304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6830b408d31cce5aab92bcb113562a28b81ea08ba449fd42f028eb2be990ecd8. Chain 2 (Bitcoin): anchored in block 958726 (2026-07-19T11:47:20Z), 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/QZTAZ2262305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2344a39eeaf79f46821ba3432f0234c2f2ae14e5ba1f2e9e04f07570366e34c5. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZTAZ2262306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x302a8464ce61b0ccee93f03ac939dde2cd170305d91e699ea1746ef0f3157302. 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/QZTAZ2262307.
this spider's thread is mine, who said you could climb it?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337b47f15c28bae19d1001076ce91ac55aaa487c5bc24351db8353f9babb8195. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZTBB2474803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322b754d4925ddf21de45b4dd9ce2c5d8e4b49dbd7e47f950dbeca25661d2350. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/QZWFE2458224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717a6acbe99a2bb37f26ad1eff602c3416e9a5ab24539423f0e2af1eaf3e4405. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZWFH2466959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x337b47f15c28bae19d1001076ce91ac55aaa487c5bc24351db8353f9babb8195. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:01:10Z), 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/QZTBB2474803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe82ad91c859d80680313444306a85b9d951427dc62ecfd26e984e0b627226f7f. 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/QZWFH2466960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883b989d9aeab98c172437a314dacab652ed4f0b018b7cb768cb47e8b171d94d. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/QZWFH2466961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x322b754d4925ddf21de45b4dd9ce2c5d8e4b49dbd7e47f950dbeca25661d2350. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZWFE2458224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd81331589cfaf67ead543ebdcb539bb03c21410ddb1741d6d7e6a920b0ca0deb. 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/QZWFH2466962.