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 0x0fd6cabdfdcb3f5b5e05a7b1c97a92b58f19110cada3d6779ce46c78035bfc3f. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0909add1-d7b7-44bf-879e-9f207e48d3cf.json and https://artists.proofprofile.net/proofs/artist/0909add1-d7b7-44bf-879e-9f207e48d3cf.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 0xfb26808978085dd64f557d3d07f5273bf978c7609a53ce832ce6968dc10d7d5f. 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/TCJPI1998305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef524835dd6125aca20ac43959bffd778875e6e221412a4983d33b350d08a9f6. 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/TCJPI1998306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07ca7243110f5cb56b89fd4a1acc82642100d5b690d3b3b569e50a6fdf887bac. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/TCJPI1998303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb26808978085dd64f557d3d07f5273bf978c7609a53ce832ce6968dc10d7d5f. 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/TCJPI1998305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d3d047506e500a0cac819cfbca75e9daff48c1e8e80f1c30bf12446984d4ae5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPJ1988498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x838f5a7780a77e3b908a70e148a78445b28f5f6e1032f817e85f317ba6aa738c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/TCJPJ1988499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca78be16aaab2d950344d9f97c163563a1258aec9415d24f1c27c60c392e4e8e. 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/TCJPJ1978456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae73460da6c5f1095ae16403131e777d1b2642f0a5b242ec3d43851aecfa600. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/TCJPM2024316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ae73460da6c5f1095ae16403131e777d1b2642f0a5b242ec3d43851aecfa600. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCJPM2024316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x700c95a39bd593d6f428e9292ea0573672b8b8545db0c7e9c49c8bbac8330a7f. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/TCJPQ2125563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf67a1918830f707fdf6c0956fb6c6ca678aa4b309199cab85b5a6fdd5336a1cf. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/TCJPR2287454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d542c255c12452a4479043c5636842bd3d047d623b47be5d251d83d8a57731. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCJPD2592329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3f8d10ac92925fde8c1b3242efe7900f2eef2c199829fd4dcd7fa3a42c5aeed. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/TCJPD2592332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bc74780fa7575ce0fdbedd158c250ff73bc8bfa1757ddcf2691116ce54b0a14. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCJPD2592349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00ad3ef5a90118ca6ba8be5777f19a1260e288e49339f27964cb20a253344e5b. 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/TCJPY2345619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2f811959e7571824c70362682941be8e64c39e5d5226e0d9987f8c49c3eecfc. 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/TCJPV2347077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x480ebebb891264c69724b5fbd77bfa0386d47e950dd0490d80cf8a5c31ed3792. 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/TCJPK2098827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x398a29800f11a2128b9e9d1a6bcdf4c72faa77114d5b69308aa051219b57a862. 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/TCJPV2391949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ebc89e5889a9ffd6e519e95f5a994d376b9bcb2cb208e0f46b31e580f3bd74. 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/TCJPT2232971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13cc6afac57debaf6f0958ac74fae3e5b5a175ff8d130ff2bb04c94244c35cac. 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/TCJPI1803014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc007025fb3a029b61a7eeedeff12e87d36fbfcb9e2305a8ab0461ddf5113b1c3. 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/TCJPK2062064.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x216088587d2b3b7cb0219da1b03bec340001feabbd3f52245ce0081e112047b8. 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/TCJPJ1975585.