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 0x77f756ba96a444b7ffd6d8cc61921398ce8ae3f14ff01395817a0add17c6e9f1. 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/5ccf264b-663e-4875-9778-34b8651c0a5b.json and https://artists.proofprofile.net/proofs/artist/5ccf264b-663e-4875-9778-34b8651c0a5b.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 0x68113cbc8d3439f2e51d1d110e5980c73183c3cc7f89610858a1ae7dea97e823. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TR2181213908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fe629064777266a5fa01edfa4f2d0784f49e72372900d829e39e7d1a966359. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TR2181213904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943fb96d466710269c5fcf882df71174f18ae3f9069dc07c40ae9f0dec25b327. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR2181213906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010fc1c9e3fb25282ef4a5954757e697136f254fda67ad10c96b5c4f5547655c. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TR2181213910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1112c706224a09ee9847d9ed49c295b64cf9348c9c2f7f8b044d766f527581b3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/TR2181213903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc41bf711966f0d556be8479c2e7df720f7fe8ca4df5b350df0091bbafc20c7. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/TR2181213902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2b219c53ae94943e70c7176f0fd4347f111b430a62b90f773bf02895e27748. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TR2181213907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb0221434a9ed38dd2a1723f74477a3d5faad6f4812ce528cfb38505beaa888. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/TR2181213905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca75170ca6a8cae291ab789d98bcff5e0206643e4341a161b51721ef58875502. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR2181213901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeecd3a0f9e1c60b46f5581e02577b6082c05dab949baa361eeab83e71547637. 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/TR2181213909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea2d0151072da1d2c07c6f3a557956585d7bc6ab6c13e95f83e7e38a2a743e9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TR2181213912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1391a1c026e7594cbd122e24ca637f4d45f74f5f6dc80a21be4bebb1742f384e. 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/TR2181620018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fc8ff23e528ec2b54612b4b522c7a42160511562d94b8783960954637c4f8f. 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/TR2181620020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc270db92d0b66023e096e011cab312a6b6eb118d774680be96022363aea4492b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TR2181520011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c307f7c6f2d1d440c30119546b282d6e632fb3fc6be95ee07d8aa4444536a63. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TR2181620013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a0835181850ee11c6e1b948802618d5281e2ceb1ef0eb5a2c6cc1ad26d4a0b. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/TR2181620016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f47df7151fe2f746d2a9bdbdca545f7f78bc8e1c9a31fea71d9e34fa6d2b064. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TR2181620017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1391a1c026e7594cbd122e24ca637f4d45f74f5f6dc80a21be4bebb1742f384e. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TR2181620018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fc8ff23e528ec2b54612b4b522c7a42160511562d94b8783960954637c4f8f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/TR2181620020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68113cbc8d3439f2e51d1d110e5980c73183c3cc7f89610858a1ae7dea97e823. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR2181213908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8fe629064777266a5fa01edfa4f2d0784f49e72372900d829e39e7d1a966359. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR2181213904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x943fb96d466710269c5fcf882df71174f18ae3f9069dc07c40ae9f0dec25b327. Chain 2 (Bitcoin): anchored in block 957065 (2026-07-07T16:43:21Z), 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/TR2181213906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010fc1c9e3fb25282ef4a5954757e697136f254fda67ad10c96b5c4f5547655c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TR2181213910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1112c706224a09ee9847d9ed49c295b64cf9348c9c2f7f8b044d766f527581b3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/TR2181213903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbc41bf711966f0d556be8479c2e7df720f7fe8ca4df5b350df0091bbafc20c7. 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/TR2181213902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c2b219c53ae94943e70c7176f0fd4347f111b430a62b90f773bf02895e27748. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TR2181213907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb0221434a9ed38dd2a1723f74477a3d5faad6f4812ce528cfb38505beaa888. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TR2181213905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca75170ca6a8cae291ab789d98bcff5e0206643e4341a161b51721ef58875502. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/TR2181213901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeecd3a0f9e1c60b46f5581e02577b6082c05dab949baa361eeab83e71547637. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TR2181213909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ea2d0151072da1d2c07c6f3a557956585d7bc6ab6c13e95f83e7e38a2a743e9. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TR2181213912.