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 0x958b5b568ef00bb897a2d035321da3f958f81abbd008a06918cfbbc904ddef99. 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/1bc137ce-5a61-4465-b6fe-518778d44c1e.json and https://artists.proofprofile.net/proofs/artist/1bc137ce-5a61-4465-b6fe-518778d44c1e.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 0x5e7cbf09ccadb81365ed70aabbd381b55cfa877667543d624da0972b9dba26c0. 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/GBAFL2100326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05001eb47a2992b6d7824fe0fa540693c1e8ec90f1acb66e03a9dba55a8e3427. 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/GBAFL2100327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06e5c9cdcb29c285fa5a87d1cd44a0e7a7a7203e0276760a427e1a81d0c93e11. 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/GBAFL2100328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b51287221fd3c247e6ba53abe9458c9c30a723af327c1295a0084d1032a747. 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/GBAFL2100329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67c48cd9bed5c963d7b01aff15f8bbe483678fe2d6b9e41685a5548d5d73dcca. 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/GBAFL2100330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b0dbcaf2b228798392eafa4d0632d9f3da624e765c438739f7608c4d270acfd. 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/GBAFL2100331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eba2ccea5af8f5f3aef1a316397a645246cc1a323558323d020db03f429b06f. 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/GBAFL2100332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b44cff10804c4fae4b89664bcb12556b94273153530fa86917f9fdbc35b8e8. 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/GBAFL2100333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9c724caebd8289e5e72f85354e1f34b11a64b24d41b1bc438e8a173f3905df. 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/GBAFL2100334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaff3bd9656755272aff3467dc06b110875e5dc16738bd31fcb3eb0cfd811d6b. 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/GBAFL2100335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c93a2e1c3960875778eca152778c6ceb77db123b8b8e54edbdd7b4b2ba9fc4f. 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/GBAFL2100336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0770fe313cfb8e8208469483695c69f12fc9910fd6eb3c5d675fbf9a2fe455db. 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/QZHN32314979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83bf6ad970b740c1739baba9a5c9d116731ecb06a7b48e87c7b25f70f4125d11. 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/QZHN32314980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x687352e470b41696ed6cfb956d6c97cf8d1d2e7b1eaad859c173b391d0aa7d21. 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/QZHN32314981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd74bb76251fc0e9e35be139b3fd8849f0f3d9a2b0165838f50cd44c867e4425. 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/QZHN32314982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9c724caebd8289e5e72f85354e1f34b11a64b24d41b1bc438e8a173f3905df. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/GBAFL2100334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b51287221fd3c247e6ba53abe9458c9c30a723af327c1295a0084d1032a747. 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/GBAFL2100329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05001eb47a2992b6d7824fe0fa540693c1e8ec90f1acb66e03a9dba55a8e3427. 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/GBAFL2100327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33b51287221fd3c247e6ba53abe9458c9c30a723af327c1295a0084d1032a747. 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/GBAFL2100329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05001eb47a2992b6d7824fe0fa540693c1e8ec90f1acb66e03a9dba55a8e3427. 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/GBAFL2100327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03ff242ebf6e45b075ed65ae48cfc35e738fb8da718105da67d5aa56f753036e. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAFL2100131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8828af70acd3e3aab23eca725d8b24d74d95ce803633e244e98c096930df32d6. 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/GBAFL2100045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa567f1f127bcf3f9cc604a880e97f075f40495551ebb97f3a5207bcca4d06dff. 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/GBAFL2000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9688927d724ff01fbba7e912c0250d656d6af119a544dabc25960292a7f513. 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/GBAFL2000098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da875cd2328d35ba4ef8955949355682022b81ead1b87801d79a7a81fecd363. 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/GBAFL2000056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba105932c7f968abfe75ac67db087464275b7298ba2ce6c8cfe5f337a177819. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/GBAFL1900376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x115159fdaec0b71e20f7699d7f73b3255d6532de2baa5a8cdd95fe8afb28e36a. 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/QM2PV1828843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c59adbcb53b606e7c28043c8a212c12781f24b489502f3096c9766aa10ec0a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZDA81823792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51601bdfe0b2fae4a542f45a4d1f2e788fc09daa953bc6510f32b21588aee239. 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/QM2PV1828844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40c59adbcb53b606e7c28043c8a212c12781f24b489502f3096c9766aa10ec0a. 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/QZDA81823792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0618a5e71fefd211f84931686d377bf3f2c24b7316773c8c003410520c7c65c. 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/QM4DW1801997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8f67dbdc1080d5361b9364ec061fd3e1d3f9682a951196f243ef047c23814aa. 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/QM4DW1801998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d77f32f3d45a3b648dbae5a574b3f6667ede27ac39f3c9f72392ea26eefbe44. 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/QM4DW1801999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb846b30246b6cb119ea8d7d9f6f7ebc68d3a126b6f4a6d9ded3a3028f5c5f348. 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/QZBRF1899557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1cc046cf74f9ba70de5883359a366e2ad99624fd8d4d037f21525496b41f095. 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/QM4DW1800303.