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 0x293210587dacb4684d25ba3d63f40c3ce3c46cce383dff068fef528c0775e23a. 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/89586ea7-ec3c-4e44-875e-143114b35236.json and https://artists.proofprofile.net/proofs/artist/89586ea7-ec3c-4e44-875e-143114b35236.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 0xb44ddafcdf46d6dac4ef4a6335e94cd11c4e98fa8fdf1cff1da7ac8d08812f72. 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/ATR981186512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a73997abf816516b938e2c132a9a7fcb5bf7fe34c9a81490e2a19ef6b8ddf9. 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/ATR981186513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39ebbe308d6455178534230430429bee1c698e0816d2e9d90a2aeedd783a3ef2. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/ATR981186514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99e5b86e8a98d13d84f2832eb44b0c0f76034749e0ff8af83033e7dc961e313d. 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/ATR981186515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ae232d375eb6c0eb16a8115d11a6ddbddc035e816736178a0147807a404afd3. 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/ATR981186519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14cbc9c4037c092d2115284becc89d83baba9597b586085efd21e437bd36bc0. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:52:27Z), 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/ATR981186496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ed114d1f0879506c813ac66b92cdd30e9d67143d74594b51bd51445f4d1bcb. 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/ATR981186499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc52c44f1a40f25be61b0666ad0b175a4692d8c7e2cf46d412b9f65b36dafc341. 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/ATR981186505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0f4d8f9892b3c313ee50c81da9c1806af852d18d43b6f2f3e59ae2129b847c6. 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/ATR981186507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabe64c6fe6fb7038fcfd20f49d0a79397224bbf165a4b62017704efb5b0f33ab. 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/ATR981186692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf44bdcd50034fa0c72d7dff38471eb94b1f1076e6d35d5220cb097af6cb5d01c. 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/ATR981186535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a3eec54cf1678a4f3b3bf972620facc93f107b54e08b1f7b287cb8946a2d6b5. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/ATR981186539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ce72735ad97e12733b0c89dc4f4123b607deaf0bda1a253a60ce38c2ebb3e10. 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/ATR981186545.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8994bb82250bf6a74853c21b1532fe927297ddec0bca27608bbed6f943982b3. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/ATR981186628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13dcea74e20a83f8c0ed0c3ab5951c5e3955389e8408e8debcf397fce1f63475. 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/ATR981186631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60704baeecf085806179889b83c8dbc5b56600221decc2b93a09cbed52daab04. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/USLZJ2211768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16e3c8122ad01458ac632ca0586dacd56b16de601feebc49c03e094b754da5f8. 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/QZSYP2444967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbce1b3668b1e1fe2873e4646e96c57c2917d712eab957be8e97c7ef853057e11. 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/QZSYP2442361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd11a0d9f222e31f815fd64cfa66f2731acf87a37668c5f02e9b5d8b9c8538545. Chain 2 (Bitcoin): anchored in block 958587 (2026-07-18T17:06:26Z), 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/QZSYP2403936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6357213e38e6c4bdc23715e6f5fcee7e5a618e4bccd01f4dff9b6bb36290c2e0. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:40:39Z), 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/QZSYP2408798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5df3290c40bb529b43f300228cb78db0787b6e7958efccd2a1b456226537584. 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/QZSYP2497094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e11a9faf60268cd8d548a6e7adf944eeb067c4a85c2f390c68ab7a5e23ea8fc. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZSYP2440890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9fc7c67407579320e7fae162d0cb3c4bbcc6f69302172b6663ee8bfec55da59. 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/QZSYP2407571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe539546acb0ac290ce1217c81276800b6acbfba94acb260ddd78f355a579ba7c. Chain 2 (Bitcoin): anchored in block 958380 (2026-07-17T07:07:02Z), 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/QZSYP2427207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0551138741dade90912e6764cea5413cec8de3aac9a91cc48111b39b41962054. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/QZSYP2482679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e23050d5b8a0d7b0f43f694ce12aaac77fb5e641b98aaf1e4ae88f2a0fd06d. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:32:12Z), 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/QZSYP2494220.