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 0x58077fddb912e7d8a0b0a8eee0bfda88da2b2873c61b271b197b05bc01506922. Chain 2 (Bitcoin): anchored in block 953827 (2026-06-15T19:59:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d724e898-8f8b-4856-84b9-863ea0178b7d.json and https://artists.proofprofile.net/proofs/artist/d724e898-8f8b-4856-84b9-863ea0178b7d.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 0x8304377acda22abb2ed0f1f559881c76bcbe36ce36fc2f2b699346f779ee2606. 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/SE3SV0900103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c4a1ebe10ab0c2f878e36edfeeff5bcb4923b9c31919367b224f890b0754cb. 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/SE3SV0900109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef5feefc14e042bfc967d456c3ee5fceb2223ddcee0356619b7c7e5de554ead6. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE3SV0900110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a1556541fba65d211c9e074671316100467d361a3e4ded13246e7f28b62d06e. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE3SV0900112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc375228c3dba5259ffd5ded1c4aecb199e7d6bd80358fa23a832317a6573f55a. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/SE3SV0900101.
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 0x0c251d31020a3ed86cdccbc344bbf258e89cee336b77b47013cad1b0b8b75d18. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/SE3SV0900102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb848ae794687818636d59e7a877d5ed089f14d41e059cf13e50cba8e19bf08c2. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SE3SV0900105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba077ba7005ca89a023b32b5e2edbfc8a2564f09c5cb766ccb721449d09e4bb. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/SE3SV0900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f325b9b7b4fee2d545a9beab14c67f1eae3fa6cbafb08ae09988e16884d2a87. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE3SV0400101.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d861618613ef321e85f5b9229461fd35789ffcae64aeb46da39ee5dd4964244. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE3SV0400102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71587005229e333beaa40f764bde62b22046b5be72b62d7a5ec079a344944298. 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/SE3SV0400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f8e4df1fbae39c1766db8c4dcf479a8772ba7f9baea09a0ccd5a21859909a8. 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/SE3SV0400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x925e368c7198d5141bc3feb3bca25d2407aea041213d3d527a7f65be45a0a243. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:27:36Z), 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/SE3SV0400109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e00c0d30ef40e0cfe01f2cc3d39af9027aa5d4d236965d3de1105fc8d8985a9. 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/SE3SV0400112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x151d1da72d05fc0eb22cf4812296bab73b10c378f15341df0762169faf79b0e6. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE3SV0400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcf05c1d6e8d86505244822ade1338df2f5c228fd76c933fc8caa3f9d3d38ba1. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/SE3SV0400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cbdbb7ccd25e85b8faa541b59b3aa29a1c505ad360b6277c08336ad7e3dfad. 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/SE3SV0100102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49a8c3cf5b5989896fe83d3e854f3c91b8d04df185831ad195702919f5b25600. 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/SE3SV0100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cb8f4e2b5a3744378808d9f79f57f6301828a58aa90bdbe6ab29322065aca95. 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/SE3SV0100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7304c6764a1d3a068f092fd26fb61d5c82892a80d74d829f42ba731d393e8c7. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE3SV0100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6be8d37b24bb16ee8ee54b30d38881835d7c29924144cb85f80f24e2d3d0d72. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/SE3SV0100109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc96d18079a37d3740eb5f5d4ad4f3187faf2558a5e251308fd3118615c5ba0bc. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SE3SV0100110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c2df7f816434ccf82f2a8b5da4aeac899a7df414869934e57003ba6950f82ba. 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/SE3SV0100112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a50a078a1a30635b313a8ebc1194824ebbf959e05fa64b558148e2c17e9cf46. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/SE3SV0100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad340b1284b69453d067484919d433f307ffe89305e3bf21b2826ce7b6f77a3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/SE3SV0100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd64fd13377e5d8f67158838963f9685e14299c4206080ac50f1c0d6eb58db9a5. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/SE3SV0100108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aeaf1a03b99b4f7214157cf11cef0d6781fba5c9c92bbaa2744d3ba4299f8f5. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/SE3SV0100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd71883ac189ed006a896d4c501352f55145b97932116d7d7c43322f3aec6227c. 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/SE3SV2100401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa70184870035ff976041b61510b4a5023b5cf521683377c5a454b65a5e3c2d0. 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/SE35V2000701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef993188e8fea1320b388ce3076c50d6bbaf1841b4d9d15dae394f6c2d1911d4. 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/SE3SV2000301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf971528bb4a0bcfb80d3bf9624e8f9c3d74883b91602ed52311b82897b412c6. 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/SE3SV2000201.