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 0x7d32ac9c6134d322bba0e9c95c8018bd2464fb85b28feafa60d88baf847046a6. 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/83655b19-04b5-4ede-ac85-c2bfe1fee081.json and https://artists.proofprofile.net/proofs/artist/83655b19-04b5-4ede-ac85-c2bfe1fee081.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 0xfce6bd80b1b7a47c04ac4339455fab1ee720462d41edc8aca3e2aed454d0cb43. 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/QZNWU2106745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03928ddec5b636dead5283adfc76e8405b4dbde0b1328066fd782bef71b54cc8. 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/QZNWU2106285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1bb1adc09d9f3fc8a10c2d134528d60b31024a864e6317e8b322e736f9bf401. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNWU2106177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x698271854d0dc5b93f03b4d5d5344df96f8c11e1966e19805b59936f73dbeba1. 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/QZNWU2141450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fac56e504d840be0bdae32e3cc319013cb3a8795a42bf318f6cd37a712f6a40. 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/QZNWU2142513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e23a3dd9cb9a9ec9829942607ed24fcbec7291b2a1041361369881a78cf3635. 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/QZK6Q2358313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4db489fce3fd9b97b23d91671869d044633c6cf581fbe11cc570e242c5a30c3. 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/QZK6Q2356321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e00351c951a1ce9e9586aadb3112ff2c6474741503dfcac2c6b1f0d951f7938. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AEA2L2119338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f0211738afa13be8039482018d8b427cb95fad0139c25131259f7b9778ac1b. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:46:27Z), 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/AEA2L2119339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc789883f27cc7f4bae2106a42b793e1e78643fb3b93883253dbce31f6350ed6. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:45:31Z), 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/AEA2L2119298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2467e78251c144e7aa12b33cbd555cdb49727d3d15713bcaa8217df9d1fb7dc. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AEA2L2119925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6757a0d8c7a9755c1601fcaf245895a83ee9bcbd786dda950a18febf9eb85296. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/SE57V2412965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d4b2b95a87ecde1ee4210d6728049825ff993c57cdb60afdc9146f9b1f9c7b. Chain 2 (Bitcoin): anchored in block 957774 (2026-07-12T23:51:20Z), 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/SE57V2413358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437216668010e5cdb1919ff61bf077083010f0e601db0ecf9f42a7bde76ba900. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/SE57V2413575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76614ee7b71fe865db7859adc48d404ab595bf3b8fca3d1648c2d769afdfb111. 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/FRX452585464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5cc6fb7d992dd935ef54e2e0e0a4b7a1c15874c3ea847afcc1e0d020520f6e. 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/AEA2L2198712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fef44fb4f00d0c9563a9c7d954d6a62848de5a19ff079f52da2e242a7ad2595. 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/AEA2L2198711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x276518eed90a84f9b7fed4b33d7d12ccfef2c264c6febe7c7a96a248b302c5ca. 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/QZDA62224525.