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 0xc66e8d30cba5c2025eaf3bf2b5e20915a48c7b13292557ab2b7be50c7f16eaab. 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/22ef607b-b380-4122-998c-4806755a7e04.json and https://artists.proofprofile.net/proofs/artist/22ef607b-b380-4122-998c-4806755a7e04.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 0xa015ccd392e96f53f7fefc366f3f3624b28ea800a76ce6c17728f9db4fb5d355. Chain 2 (Bitcoin): anchored in block 958346 (2026-07-17T04:18:11Z), 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/US4KH1052001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf58d0434c4b99c30d6aa76bc637182f131ceb731ec5f474c2557e58f545d81d2. 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/US4KH1052007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fee9e3623579006d68b4478e508d20ce9aa8dc7bbe6a9723d881a6f0e4982c3. 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/US4KH1052009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1e2df113e000a8573bfed8dffdc7cd0d1d19c822ee366d7064370f1d3bbb3f. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/US4KH1052010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa520df45f1226da7175517c7e58369428365d50b7c4605ab514c17434bd03d95. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/US4KH1455705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x541ea10a23dbbbf03e3eea7f34e0f80a5d55010d242795cb7f15acaf62cb6a3f. 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/US4KH1455706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bfa04f408d1da1a006c861b6df3131d39eb1a79b3713317b5490736e9dc9465. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/US4KH1455707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8639de36ade17d4e8ee439dda5350e24718af36b71e8624d9d7852ebf5810bfd. 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/TCACR1618767.
What Makes You Think This Is How It All Ends?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x186d2433ab7cda02a899764e1f87b854e023868e5f2b2e7d1abc8997198eebed. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:44:07Z), 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/US4KH2463601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dda7fdb4c7134e037f998f174becf44246b9b3e54a9a7aecb97f6a8fce7590. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:38:07Z), 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/US4KH2564202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7904355f5833930a9f335743725a1cc5de6d2588d66440428df287a36da6b0. 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/US4KH2564203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7a7c043c55b7a19c5cda834765ae27fab953372c475b46466caa894e79b818. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/US4KH2564204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5cf3cd3f29598500e3ad96ab2f4f6718e1270f76330628370e6e4ad271ee2ba. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T04:30:17Z), 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/US4KH2564205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2de4566483577f3ccf73ee50252f78a68116cacf988cd9acafe4253e384d6a6. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T11:05:03Z), 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/US4KH2564206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7bff00f2dd72ed1ec18c825ccbd5ab692b1a6f1e77ef982610ef31f320b33af. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/US4KH2564207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x453edd32a850f7e05e31ea16d311998b606d39d418eaad10b9ea4c515e720a84. 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/US4KH2564208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa41b23336363803fa938dcda95d8e4ff1699ff1da54de7c84c02b03919b351cb. 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/US4KH2564209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd16be852781dc0c2e799afb59be22aa94b0e70753ba2dcc22854dcd288036185. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/US4KH2564210.