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 0x119a6229cdc260aa5c354604f277e64b33ba2cad2428e75bc768feb84111fec0. 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/64ec2b34-a21a-4c1a-b560-c266e1e2f264.json and https://artists.proofprofile.net/proofs/artist/64ec2b34-a21a-4c1a-b560-c266e1e2f264.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 0x17365cca2cebbe7a2d5119386d28e3d6340f1b64207bb7ac2a2a8961f7d3b9d6. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:35Z), 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/ARIXB2301984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x598f80a94a1661ef0ac8ab50615374fa657be154cdfeba536b2719c0d88894c3. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T09:24:15Z), 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/ARIXB2302243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67666a82dcb02db48ec74513fb3723806c5dc797914f38bfedcff5209debb56c. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/ARIXB2302310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549cc4e21605bfa8ab2d7126456e97fb354f9e4e8137a1938f560214478a41d9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/ARIXB2302461.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43fcbe6d394283b7a4474f447e401529a25148637e99a30b906308bcf24dc9d7. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:21:49Z), 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/ARIXB2302462.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3a0ab8a24416cfb5b0165a4aabd59df0bafdea022f6570c1518bc336a840fec. 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/ARIXB2303011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a17ee494288b869b84ec4747c354d3e89807db432e392073a1d5965166a2ec2. 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/ARIXB2303012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b4dfcde468a41ba3327d2737b3dd00ca4dd9824f92dba055d696e75d235be82. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/ARIXB2303013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea4fc9311471613dbca40b4a4e3911bae3bd5e0716a8074904a18d8071c8b76. 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/ARIXB2303212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46b95ef4882b070f90708130efa19e3c9813916902722610407d611d1c32a31f. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:46:48Z), 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/ARIXB2303213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03320ab74716632b9acdeaf1e35260a4e0258c62bfff240348776cb4aeca558. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/ARIXB2303214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x368677251ea878e103a966cf2508bdc5e3145ac30b2d21d939bc0553b356a5b9. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:33:56Z), 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/ARIXB2303312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e46b9a544d475b3f9d31370b3a79391ed65bae8e3d11c00fcd9cf7e7308d447. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:24:14Z), 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/ARIXB2303555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9725abd9101c22f1a659058f77a6a1544e05b29a7d594b894c82f98c898e6058. 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/ARIXB2303557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4603a1ff9c7cd59d538e0f60d54cf643200c51189a3b27ed180e9672a86e8bc. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ARIXB2303558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4da6d98ffb94a9622f77a32483c2c676f188f8f7900783dfadb38e099090937. 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/ARIXB2303634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ec8d285ce263a04f4c34758a701a25b4fb912f09bee8469ff6e5252d1062831. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ARIXB2303635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bbf9ed5bd7d63ef9b2cdecdef1e58f44963b1aacdce636950623d5197bf356. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/ARIXB2303636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x028cf1a54d0b73b08f11fa8648bb6d0af24f37004b54d7dd78593622f3b59599. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/ARIXB2303863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c4bf5ca3058d6ae31c38aa2e448733084fd467fb61823b91cfa5558c93cb77. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/ARIXB2303983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e035695faef3d6f2b442a0d3539928c0615bc44e2a817bdc96071a59806158f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ARIXB2303984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47e008b6701073bea53c2c7f622880bc4385c763b1724f6d2067edf8ec2ad601. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ARIXB2303985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf3bb8eaebf4a5aa529493ba93ae205102ad6fe91e6a612dc7ba4f12cf0f6eb5. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:08:06Z), 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/ARIXB2305198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x883c5848be3c482b59cd3ea92e282c35c21b3e697a5aa47ff8e5b5d16ab56ab9. 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/ARIXB2305953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba2f7b16946989a70d4ea2b254bac996019507a9942d7f1dc1d26ea5dfd15b5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/ARIXB2306401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c81a001271bfac2f2f1f051ac48df70b9e68b605562be8e42da0af51538032e. 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/ARIXB2306587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc4cb7b48d4226e55cad1fc089be6b1699a8898729db2dfadeac1f201d33d41. 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/ARIXB2306849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde455ab132f3c396c6103d1c4b9a3aa277ce117d81d7f69da6e5bd634c34ba24. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/ARIXB2307330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27064d167312b6cd4f8f6978ff6fad85fc8762b6aee0b81f3507bc43e721586a. 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/ARIXB2313120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b41734f035ba177733999cdaa0f7068b02170a4b4505f448d4b78519ed1da41. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ARIXB2401381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c3a81234711e5d172facf6bdecf17a8ab3344e13f19d2958137529f7f12b1d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ARIXB2401380.