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 0x5bcd71f4e8ed40ff96570f2d958ab17c74d8a30d941787b8efae514545021e73. 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/e65c9e05-496a-4314-896e-e3690fb003a9.json and https://artists.proofprofile.net/proofs/artist/e65c9e05-496a-4314-896e-e3690fb003a9.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 0x5154ba4d1a61ceb015a2ced82229f165179e9a93ef874fdf01d7096770613242. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/SE66N2253949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b068682d7b8a3401003efc47f4c35eedcbfd66d65047e647a986965aced46b9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:07:43Z), 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/SE5752339501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc51adc432ae0ca9a93768c4cd02bff00cd405cfbb70ec7a9e369fc158dbbbd0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/SE6HN2322453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74b16661b18130e28aa24643aed87406fcbadc5d6438d655e6a6d7311c426a3. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:29:52Z), 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/SE6QE2366348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34dc9f639f07b5ee24568e9c00bd488bf779ec133c2541eea607c4faf471d603. 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/SE6XW2304116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x219d4a10e31c88d7bd347e32817bf71e3666b6732e0b55ce2760d854fe3d0862. 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/SE66N2365900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe355207829b540e2c3095f0e1f2e52cb791942754766a3651b0aa3f5c112e2aa. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:08:32Z), 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/SE6QE2415000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0930040582f8cf8ad972357fae7ffd4f99e1c30c41fee0af9d750cfa95104c91. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SE5BU2459658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8dd162942b3ed3b7c7894bc6dce53c9f2cfeeaa629145cc22f7e12c0d6ca593. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T10:50:36Z), 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/SE6HN2408574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1171f6fdfd8fcd14a515475a239dcaabaec9aa203ee233a74acffcabfc24144. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/SE6I32448198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e34e6b11be04058f218379cbb716502a8e3bc3a63f06cb1f3f00699bc07138. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:08:42Z), 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/SE5BU2593585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ad3765c2faf593a133b2625db27f15ffc786cd74fe05f054842b19946119ab. 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/SE5BU2593588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b83b4dc9aca6a4b067cf7b69a3acbfd5c96ae83be3d4373709418fe34cd6092. 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/SE6XX2567496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a6a8f7633f7f54cc82a2a546ed44e4a4917bd6adf1460c5b71c598159ec8f5. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:54:30Z), 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/SE6XX2567497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9943b2b7d822d8cad0c11188330c08d619857f75db4bf1e229d4eddd0c17003a. 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/SE6XX2567498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cbca337d511a9de549323a100cb6bad20bfa30f280ad019ab540031e7bef13a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/SE6XX2567499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fad29ee0e6a515d7f5261943a22a7f20ca9a0e6773d232b54cdc4a98da711cb. 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/SE6I32538478.