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 0xb08b409d11844e8ef7265e6577544a08f4336d9e2348c83c89b80fb74b9d9c3a. 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/8dee9e3a-a604-4cc8-ba06-0221b0da52ab.json and https://artists.proofprofile.net/proofs/artist/8dee9e3a-a604-4cc8-ba06-0221b0da52ab.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 0xfb8f0dfba392234e90b32d68fc8865768c3c86096db0de3fd35752c46f6287d0. 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/QZGXC2300670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8f0dfba392234e90b32d68fc8865768c3c86096db0de3fd35752c46f6287d0. 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/QZGXC2300670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0f88abc69b288b2351bb069d911ede98cbabbd15ea460416682e4f1e559c9f4. 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/QZGXC2300753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df58a73fa7f35e5f2516fa08bbb9ef132df376f468552fa7fd44361fbcb4e5. 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/QZGXC2300754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23df58a73fa7f35e5f2516fa08bbb9ef132df376f468552fa7fd44361fbcb4e5. 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/QZGXC2300754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0890f87560837119a8729c10fa8c9226b6a3379e2f67043e1df0cc6f868c65ac. 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/QZGXC2300475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0890f87560837119a8729c10fa8c9226b6a3379e2f67043e1df0cc6f868c65ac. 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/QZGXC2300475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84361787284ae2716c380480105953d5dec306332fcc605e4780a036176db7fd. 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/QZGXC2300755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84361787284ae2716c380480105953d5dec306332fcc605e4780a036176db7fd. 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/QZGXC2300755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127bb34d91798855d24f589faa2377f0f1a280b54f0f372207c0c16fe93a9824. 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/QZGXC2300756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x127bb34d91798855d24f589faa2377f0f1a280b54f0f372207c0c16fe93a9824. 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/QZGXC2300756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc5bc4a3aae0a1b389bd7e8ca1d8d19d9e415fa8b8e82815a29778cb73dffe4. 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/QZGXC2300585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc5bc4a3aae0a1b389bd7e8ca1d8d19d9e415fa8b8e82815a29778cb73dffe4. 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/QZGXC2300585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb67b4ead1bb300f32637bbce96c3b1957dac5e8632ac02c95156aca64778d24. 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/QZGXC2300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb67b4ead1bb300f32637bbce96c3b1957dac5e8632ac02c95156aca64778d24. 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/QZGXC2300428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36e92eff34a2f9547712a43f442cc434ad437d7940cc0441da6ccab771f8a8c. 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/QZGXC2300757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf36e92eff34a2f9547712a43f442cc434ad437d7940cc0441da6ccab771f8a8c. 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/QZGXC2300757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e53d8884b76f9a7de5b68e6b238ccc7f8a00991cec8242fb8b45efc58a6b7c. 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/QZGXC2300758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e53d8884b76f9a7de5b68e6b238ccc7f8a00991cec8242fb8b45efc58a6b7c. 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/QZGXC2300758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa022f76ddcae470397e23b7b891b9c26760da95897769553ca15d425853a3334. 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/QZGXC2300759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa022f76ddcae470397e23b7b891b9c26760da95897769553ca15d425853a3334. 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/QZGXC2300759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf851d61397c48d74be64f6c900d4b43c630bafa4adea3a161c63a1690c8605. 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/QZGXC2300760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf851d61397c48d74be64f6c900d4b43c630bafa4adea3a161c63a1690c8605. 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/QZGXC2300760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8f0dfba392234e90b32d68fc8865768c3c86096db0de3fd35752c46f6287d0. 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/QZGXC2300670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0890f87560837119a8729c10fa8c9226b6a3379e2f67043e1df0cc6f868c65ac. 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/QZGXC2300475.