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 0x52b654039c99ba7dc81cdfd31a443ce15f288b0591ec69cf3211d4a18305b9e2. 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/8c07e7e1-e2c3-4b8e-966a-26a24c18d7e1.json and https://artists.proofprofile.net/proofs/artist/8c07e7e1-e2c3-4b8e-966a-26a24c18d7e1.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 0xc6fa7f7f5d1e8701ea4a8557ef05479b82c97354df70eab64af53b393385eaf7. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZWFJ2475736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafbb7238238995dc73edb8695b845736358e862f09bc8d778777118f94703f9. 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/QZTBF2413609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x776e97fbe8b4bc5f680e41bc680d95c445a9a6d3f4b64c43c0aedc9293752900. 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/AEA3A2427082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x065f4404d53921619c05896213f28eb261b658e44e333d24a6540d3dd8be6370. 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/QZTB92412927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bc2890c00506dd54612e6423dc8bfed018a82b3d810189763d5012336055349. 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/GXD7V2446880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549ee5ffb1e299cfde253a19199e6c4b8a851f972ea2bcb77d81f4800729123d. 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/QZTB22424735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97decf15dcb3b3e2272c27f0d3386e19ada48be2ebd912dcb96528e2663b4d4a. 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/GXD7V2252785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e4d35f8e8482fb2bb758106510aefb70efe8cb2dc45a1e9f5c224f8e49ffab. 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/GXD7V2279982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c2f95e7c9d47852b84b0283f1f7a91c4d06e582dabb099afdafbad7a842615. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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 via https://artists.proofprofile.net/api/v1/bot/ots/verify/track/BXIV82493786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf9054914259c9556dba46132a3c21534a0a13dbd2bcd6043543370dac1bba0f. 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/GXD7V2292225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34b6f76bed3bc187345c4dfb7f84fa7e36a5ef927a53b632afb12df496a0171. 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/GXBAV2271677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86a6917e16d711278023411a9e00173d262d911e0ccc55d711ff43fa6cc6c2a9. 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/GXBAV2229840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34699c9b9507eb8b3024b7cf49d9b78c478ba2a8b84a0a6c1a166c1250d4dcd. 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/GXBAV2223131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e478f5d7db638013f660807a746fa113798a58fdc92bff336c629ac980af8b. 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/GXBAV2203505.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc11334a62abc3ed28be20a2c0730691f9532043e6fb9c5ee495a473928dffc5a. 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/BXIV82490433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a91bc840ccb82ba0972a9043a23b94516e7ee9c58fbfd109b60f21b2f5e4d6. Chain 2 (Bitcoin): anchored in block 957011 (2026-07-07T08:25:35Z), 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/QZK6G2489199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3a244634c9a2aa0f52550ebb6a6d25fc0482d519d4c8d8fbebbbeab847bb261. 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/BXIV82421395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9932b1330703fa61b8e78024df3d99d2754cbf010eccac4cbdbcc040489d08c6. 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/BXIV82442616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc267e6b56ebc2b566318c64d893dcbe31a9a851b022e520e624e6f0b49ef5fc. 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/BXIV82449153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5137041890b51a929bf04bbca8df5d86aa7ed92f4918da6747d917cb523790e8. 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/BXIV82397064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75461c6997e7abbe3f399206e0d12f983994084df602b51e8e845c9623c5ebf1. 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/BKELR2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b4fac211d0e324c257caa7581813d0083cddf9bb50b5314b60a63862252e5b8. 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/QZDA62551697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7237dcf2db1704edd0904cea4e513c534d3221f0d74ed811d4a0625cfded49dc. 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/BKTKU2400091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a43014595337dc036fcd4bdd86d3ab0dbd31a6c16e929b689ea11e08b5474c4. 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/BKTKU2400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a097a5e4d7bfaa527ff6567213e3b50aad6f32112b3023f03a659244aafeb6e. 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/QZZ7S2439205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c7c0dd7a714811bdcad63ec588aa35de776f5a80e6498f59d940e90646423d4. 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/QZW9L2433930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb6e9781c0a752ca57304aac741489b3c7444d2b252c6f0bc677def8c42868c. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZWFQ2495253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07dc534f83c5049897aa2612fded951d6af77bc2178ff7cba6cb1f0546e9ec67. 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/BKTKU2500160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x594a8abc2c4915cff07d03a7a65f09766b3b716beb2cf1492364e0d0b1ef4a78. 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/BKTKU2500227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb91f15d459ab8f2b3740d510c0d686dcf22f1f1927f42b73faff1093257cc1. 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/BKTKU2500073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7515f06d315c65f99932a08ab437425e78faec5d7cd1f1df590b2f2b609a549. 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/BKTKU2500054.