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 0x838972a3ba46b922d37d38d2ba77b76ee2b293616b1f49af32a740073dfdac7c. 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/fd685ae5-bbdb-40ef-b498-de79726d6e7b.json and https://artists.proofprofile.net/proofs/artist/fd685ae5-bbdb-40ef-b498-de79726d6e7b.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 0xeabe340bcfbc493483eb701979a1baf5036e0ac49f5dcc615b1cf30cf7203871. 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/QZMZ92001145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e725c8f56e352b35dcced79927c154ca50701d8827dd8894b22db32a3fcf8f8. 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/BX2222200004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec4742658609fbd7e10a9a932eab9399e27649b09f0c4bd0932ad4d192576bc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BC6M22535261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7da389c022f982b31da60913c489b445cb8b0523f89d8450d7ab8fe05587a90. 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/BXTHX1900048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c7144c54c87f98fbe2ba1279b0a00fbb428e09f802e9194436e5e269c74f53. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/BC5LB2200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2728932ef88e5269ccdcf1b0748f9fc06fddc414e44fc5d9679b08229277926a. 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/BCLQT2100022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4854f9714e9d1d90bbe3dd032193c5bed3be0b9b4a49db5c8c75b3a2f71f3779. 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/BXTHX1800032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79b20bffae3c0a7d4717653ace0f36efd877e1eef082cd9fb0608b844f6b69c0. 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/BXTHX1800033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f1c496d60e29cc41436f11ca72fb5b0e88581a811f33dac8244372c6936901. 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/BXTHX1800034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8ac402270330e8388dba1169195b095d03391060308e4081dbe737d9c140398. 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/BXTHX1800035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37cc8deb8a92802b1cbb758d40c266adef085c82362efe0af639dc9999bc584b. 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/BXTHX1800036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7836c860709fa58076b644dbad1853be6014524a44c0d1402e20fd243f0f08. 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/BXTHX1800037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb321d5a7ec3609e8ece339963f6e31a51e8efa87ed3f8c914c7c4eeb5a9fc8a3. 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/BXTHX1800038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed4eb94d035fbe1cecd76a0a6aca2564398ba8aa795d0cc5250c1b6b2758c86e. 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/BXTHX1800039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7cf1d64b191896d66b031f37c9d1175eba647eafebabffad5f61728d50e2321. 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/QZ5AB1802494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2858da8123457c7b64e838d2c9739b593059b4ad76d36f116835792127b659f7. 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/QZ5AB1802495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98254f179eb07f63881d35fd233365eabdfaf226045f978b245f7009685a81fb. 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/QZ5AB1802496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac3d32d93fb7950c83d04065cc8a74b0b44e6297994c665b00af13da98ddcd4. 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/QZ5AB1802497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7a0c918fc9ff9b6421e4b6555c44d248c1c487b08d614ea61d99e7d5a57c802. 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/QZ5AB1802498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d57ba82ef668158ed290e5530170c2d77af48030394c6cae7acb667805ee293. 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/QZ5AB1802499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd69fcdc1530f43796f166813dc89f607b5b757769c30e2df35a861c163f1170d. 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/QZ5AB1802500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f986b390f5df7e9afde36589b736393f8d564261748875d91acdfb9b9c054cb. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/QZ5AB1802501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66da72b782d5c52e176d79b28accb93968682e382512a36eff478e2e84f38bde. 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/QZ5AB1802502.