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 0x4eaf8b083c416a380a802a9eb59aa5737bda403e19f8169baceb9e7334fc4123. 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/c3cb7d3e-0b6c-43ac-994f-465b8fabbce1.json and https://artists.proofprofile.net/proofs/artist/c3cb7d3e-0b6c-43ac-994f-465b8fabbce1.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 0x80a157da4c72e90fdeb15444d15de2194da93d42ea2246cfc451db8cecdb6094. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/JPZ921904773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1889bafdd8cdd3cdd3d2a9ee915700ef1617f9f36f34c4db29cd943385ade2b3. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPZ921904761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3206c78aaeef1e39c03540483e0298ba8585baeaab9c1ad9742167775500561. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921904762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e806eea1ebba90495047662fecdd47e341a5848aa8fc3d3dd1554cb62f99b6a. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T05:31:51Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921904763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5717f5258a841a21a4908c4205fa85bf86bede1eb4f12e656892c06ef26843f4. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/JPZ921904764.
劇場アニメーション 雲のむこう、約束の場所 Original Sound Track
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e93f6eb72fa0ff5d4c943210f8df61250d7d638b344eca554f7ec2ec48947ff. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/JPZ921904734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3687bb01ede660eba5520bfb2d1c2e5fb21974fc4b6e0081c8c4184a3f08c70. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/JPZ921904735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaea09a925eebe6c1cd1f45e34a293c811f2a2f84d33969ea4799ac6c5b529d0b. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T18:45:36Z), 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/JPZ921904758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed49427891ba4c70513be157d3390e5ae7815b90a93f8e0d7585b7192e47427f. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/JPZ921904759.
劇場アニメーション 秒速5センチメートル Soundtracks
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c29d85b34cb6308e62dfe9177440c66de77cf11fb618418d92f533f7d72d0a. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921904681.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee065cb423113f271bf1644a6d44e6fa83acefab2f1948c116884853e11fe10. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/JPZ921904717.
时光代理人 (动画《时光代理人》原声带)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90ba1c1cad10a87e9a5dc11a8ea682c126d7c552d65a7b48f2a08bda9360d1e. 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/FRX282279601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc42be052ab11de669a7a0c8b29679bf5ee0b70ebc4219d05c175ba2274ff73f4. 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/FRX282279602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570536ca1a2083eafaa545a73dab67b1df392a9a01c605fab8b561bd3ab23fea. 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/FRX282279603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1642cfa9ede59e7587665b4b3e32210d45f70325927c1a93a7e24378d686b7c2. 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/FRX282279605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f5caa9cb9be8e354edf574c0068709d87f360a5ed02bebccc69cdad613f514. 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/FRX282279607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091debf750c8b2a14ca4dc2352f78246f929a648e11d12ac8087519187b627c8. 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/FRX282279610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0345b5963366de270d7edffa8d36386d72b77776df8834500bbfacdaee931a80. 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/FRX282279611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c314cfa0336bb25ca282c9c69abfa4874964cf3c7efd7b046c13577387a704. 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/FRX282279612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632d2deac51d96e1c39463a6d8f6db667288c404bcbb4e7efc76a445b07ce463. 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/FRX282279613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426a5fa1f564aea0c4e699ba3949efc50122565dc8b223258f160c0095458ac6. 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/FRX282279615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51b6f3558380093fef260e05b5f680da1688f657c0cb3b64ef2c8c7b31924dbe. 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/FRX282279616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e71d0b9e6ac0d803ee9b5e57e5308697240ac6ae100539fbafc37c0910dbc65. 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/FRX282279617.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x416c11b8a14d8a7dbcd58c4e5908d34b9804e65da974bdd114b7502aebb0cff5. 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/FRX282279620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fb5fa257fc3b1d69cf48b66f3289cf4465c838aa199ef3b4defaff067e68c0. 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/FRX282279623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94c731f3c29f180977356b69c9de6a8bb120c79db9bf1841ecab3502c656ddfb. 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/FRX282279624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39180e19e60555a008d2a8ac668ace451632e474b959875a9746d1c2153b3888. 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/FRX282279625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a1e40da99e6cc9583db31dc7460cde689148e2258ebbd6b71590fc062c2300d. 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/FRX282279626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaec2e3e3e1a65577111d411f45ade7519f45cdc5ea62d86ee7d4927cbb2ae5d. 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/FRX282279627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c43223b104ed2b88035cd75c1ca7c51fe4b91caa1af04249624f3359bccd83. 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/FRX282279628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987c014d9644cd15e34d2ce9f27a263461c56169dd150440d6dd1a960dca3c19. 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/FRX282279629.