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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafccdc1a974a48d57e6342f3bcaa2d163840a9a92252ed65c7985e1e4f4bb47e. 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/5bb72382-17a9-42d2-bfb4-ec0bb4fbdd79.json and https://artists.proofprofile.net/proofs/artist/5bb72382-17a9-42d2-bfb4-ec0bb4fbdd79.ots, the client at https://opentimestamps.org runs `ots verify -f record.json proof.ots`.
1142 TYBW (From "Bleach: Thousand Year Blood War")
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x877e1449e63d57890116ee6f2c42e3c3eab1d2a3372bdc29507b8e30937a7890. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519184 — a six-check JSON result.
Cometh The Hour (From "Bleach: Thousand Year Blood War")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf19b83377830c53441ec6721a1f0de98b09fb7d1b2ff1b824c19bd4a920f924. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519190 — a six-check JSON result.
Wandenreich Theme (From "Bleach: Thousand Year Blood War")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe06fcfea4c48f9625d2952f0527e3e39054a88655d6506a7345e03daae0a55aa. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519191 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c987b09407035ca7b82badec70b6204bf9d4d9857d7b773957129f095a03edd. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519192 — a six-check JSON result.
He'll Die For Our Sins (From "Bleach: Thousand Year Blood War")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x010da8b66e090fdd96d84608d80090d71b7fb498f9a9a635b7e1f5c9c7fb06bc. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519193 — a six-check JSON result.
Bankai Minazuki (From "Bleach: Thousand Year Blood War")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc129276d98b08a8d374756e64839ce759a02aaaf27ce610454a8003bc866631b. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519194 — a six-check JSON result.
Wandenreich Declaration Of War Theme (From "Bleach: Thousand Year Blood War")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f03b6226c6b094e2267a23c20de3af207d250b07eee58af46203ff292af7af5. 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519197 — a six-check JSON result.
Invasion (From "Bleach: The DiamondDust Rebellion")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6bf9920bb77ec065328d6ee3a07fbeacc7796c3431808dbc4577506f31fc172. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519198 — a six-check JSON result.
Ichigo vs Quilge Opie Theme (From "Bleach: Thousand Year Blood War")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacce8c83b37a51972371bdec73f8aa6c60c630bd3a9b63d019d7be6a8094dccf. Chain 2 (Bitcoin): anchored in block 958506 (2026-07-18T06:14:51Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519199 — a six-check JSON result.
Nothing Is Won, Nothing Is Lost (From "Bleach: Thousand Year Blood War")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x388aaf3b090da3909e06dd673b21ceb4d0c9a21500145b7f37ea22e7ae9b1f5e. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519201 — a six-check JSON result.
On The Precipice Of Defeat (From "Bleach: Thousand Year Blood War")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe85b569cc56375cc633d5cc087cb8cd2a6082ce7382d29f8ac7fba7adb101903. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519202 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc49ae18ddf4a43bfff2d748e6afe8b2cdac627dbc765389bf30d4b5c7aff61f. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519204 — a six-check JSON result.
Stand Up Be Strong (From "Bleach: Fade to Black")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6177904f48b0e4ff644dd26a602b8b6f915a7e841f960df9e76f36135815c45d. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T05:29:55Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519205 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f7ba08c1f31485f99961b00890b076fb542103a10e4f71beb5a972a62c8574. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519206 — a six-check JSON result.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5072cb9bd62ee834c8712b8d32efc64afa57b0176bf00e34379c9dc152d7792. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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 at https://artists.proofprofile.net/api/v1/bot/ots/verify/track/AUMEV2519207 — a six-check JSON result.