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 0xd679e6d566d4737c5bc3841c4306ba5f27ebd7b003cb1f1782d7441cff4474eb. 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/549262c6-5836-405b-bbd6-005437faae5d.json and https://artists.proofprofile.net/proofs/artist/549262c6-5836-405b-bbd6-005437faae5d.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 0x4e55e92e97c1eed784234249c9cd6e18aec82813164442009a8c191c36b2e2fe. 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/UKXM32000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4999c27942a210b8b0462df6cbbf66feadee5807da25d530c78c9b2c63e8c9e6. 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/UKXM32000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7227222262375386cd51e0c361817396275fb86486cb095c1930e6e600c43ee8. 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/UKXM32000138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e068131889e410bc34c56cb1121a9b3bd2de4f5e09ba13779b13035808e6caf. 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/NLCK42212087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83df21397307e7886709792015b9971283aa8fa3f7d7366121dbc9466ba1696e. 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/GB8KE2058052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfae3808e315bcf70165a8ba12680bb32ad7e85de558ab2f2674922f033eba32b. 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/GB8KE2058053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75fd9349613634ee47a25a204297f5cb92ef826210e52343df380045dfbb9267. 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/GB8KE2058061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a6253090d34c07a66785f5f5b4bacf01413581ca361185a3846d9bccdf74a7. 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/GB8KE2058054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e4147a13c6e6ce32ad8e816a2e7f66617fc94f45343fab385a1be5ab69a97dd. 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/GB8KE2058056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d99bee0c5a3601f52e8f8094f82531921cc9513c382cbff1c281de02bf29da. 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/CA5KR2506533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b76c64c061f2442e45dfc22e368cc65acf0c7a7ea55066ede6cd0fbdb0a3ad4. 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/GX89G2486312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29a3268909b6d6f461480b889496e8639340cd9f5de41ebf60b3f1aafcea3f33. 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/NLCK42215408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d2ba1e76f67910a84f3a800657f90f7a9d18f0449d4407dd4ce56255c7991b. 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/GB8KE2150470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa55c4b07cdff63d5090519e9c6863b64c721a0cc5f24e7a9302f556fdbd54049. 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/CA5KR2162263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ebc037bdd169b8aa702dc5fb9bbfdc48155c887840f3254ce7b3328e16d990. 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/CA5KR2505521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c2ef8d3a47be80c61bbb602061a913fb0c46bebfd34622b8b861669be65d9f0. 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/CA5KR2506348.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282de06a095e06bd8fdac11dee2b5cea864c31a6310b6f125ac1500f111bee70. 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/CA5KR2506536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ae6befd7420657942121221bbfea1e886a101e4e94159430e33a64f22d22d9. 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/CA5KR2506534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381a71adc4897654e6a0a746c6b4042a70ff84ee812435788788f6decfeafee9. 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/CA5KR2506686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9bbaa0885b38588d803e588a742f091e5a2e87ea8904a134ffc6f44653cf22e. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/CA5KR2506561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d99bee0c5a3601f52e8f8094f82531921cc9513c382cbff1c281de02bf29da. 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/CA5KR2506533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40ab5b0d321f8d0e546b29b63d270e4ce6be8011e0c5aa4ba72534fe19f549f9. 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/CA5KR2506538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1010ecab39488a9e7429fbe9663f822b8d52ec299d44e6c22d9ccdf2954f6e7. 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/CA5KR2506535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ce4d8a0529cd5ffd9a69996de8124a6ecfb6cd9126657feecb865eafde9f39. 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/GB8KE2056737.