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 0xe4d1316fe409fc7e85da81f38a1d787b97ae81d6d91e4465ae96217c59a89b72. 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/9d2c1374-8906-4c96-b56d-09664a8023d7.json and https://artists.proofprofile.net/proofs/artist/9d2c1374-8906-4c96-b56d-09664a8023d7.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 0x6a5db67bf8e140321e8699c31fbb20241742b104b27743a37d4225928fb94e56. 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/QZTB72243538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x175bf540064836b1b83ab3465346fcadb4ba6d77ad15365919055d7f18e41ca7. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/UKZGC2408207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ceb7c12400982b21ec2230e73aa7bb2f55e7f280b7dd3d4d5abe74b15654a8. 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/UKZGC2403398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d17e53909fc2b5237c622fb4c21d106b07b6b12759fb3e9fa5c839e1b68a1bc. 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/UKZGC2405721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b993c9a83d27a4629b755e0e44bc9116ae36ebcbbe1c99c6b8a1a00cdf3d40. 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/QZFZ22362358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de57055898c268d55de2f58e9c24b5029ee0dea5ec55d82fc15539e3226834b. 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/UKZGC2309152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09a0b4359c5247d80fed3fdf58f226fecac85dd24bf9959c42987abc8e5d2625. 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/UKZGC2303669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71e23f7a124c711b57d7460cb0582b5b006f9f4e9096c8c9a44ce2661212320. 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/UKZGC2308017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f68c902bcc6ee8bbcc6f8e61fb6f169a0ba6face65939c00ea250815dc2e64. 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/UKZGC2501247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbace7359218bf97eb13cf24108d535fbf5f4a9c8e9232bf0fe17346b377df3b. 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/UKZGC2500647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99eb125226225cbb470b379780189ea1703a5860dca9ac2914cca15b70a67d3. 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/UKZGC2407476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d17e53909fc2b5237c622fb4c21d106b07b6b12759fb3e9fa5c839e1b68a1bc. 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/UKZGC2405721.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ceb7c12400982b21ec2230e73aa7bb2f55e7f280b7dd3d4d5abe74b15654a8. 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/UKZGC2403398.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfb69278f988e1f629a1cb2fc4d1829a23728364ef32adc0a06bfcc987e6102a. 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/UKZGC2403458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38344ff8efebdf016ad7f3c5e5cbfb81a18930375587390bb5cfd7f5b0ed1da5. 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/UKZGC2309829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3de57055898c268d55de2f58e9c24b5029ee0dea5ec55d82fc15539e3226834b. 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/UKZGC2309152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa71e23f7a124c711b57d7460cb0582b5b006f9f4e9096c8c9a44ce2661212320. 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/UKZGC2308017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827ba2429603b46ddc5b205d6ab5c7d1d8d3d643b0e68fd0f9c0703490bffeeb. 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/UKZGC2302424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00e7b661a21a2ef306a55362a03c179e17a484673847849ff79f80a2c7079728. 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/UKZGC2300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b993c9a83d27a4629b755e0e44bc9116ae36ebcbbe1c99c6b8a1a00cdf3d40. 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/QZFZ22362358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6741df2c9b46f99b339989a7e8a89b6dd8cf44ff02485467762a6999dd9c4bb. 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/QZK6H2283215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ab4f9dd2dd708020ae8744a3c5a646dec168f3e23d6194b5d9c2aed7c8c1d32. 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/QZK6P2215760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb7a088d4bfeabda1be2be6ba9f0fed4818fae393227a4993f1a71674942c064. 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/UKZGC2502529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbace7359218bf97eb13cf24108d535fbf5f4a9c8e9232bf0fe17346b377df3b. Chain 2 (Bitcoin): anchored in block 957050 (2026-07-07T14:41:13Z), 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/UKZGC2500647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f68c902bcc6ee8bbcc6f8e61fb6f169a0ba6face65939c00ea250815dc2e64. Chain 2 (Bitcoin): anchored in block 957056 (2026-07-07T15:15:30Z), 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/UKZGC2501247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8d18e8c3587b934a249347aee45253ab1840bf4edcb40e274e4f9a5657ab56b. 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/UKZGC2502530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e4577d218df52c8019e99497114a467f5a51661e298617526424ece2bedd82. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UKZGC2502531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51192d459f01ec7b055513fb1d67fb1139e8ee95d3b7ef0065a313e60eb6cf2d. 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/UKZGC2504835.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14f3dc6089668217986a84ad7d444d9874ec0405c525eafbbcb89f035e7d2424. 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/QZK6F2581991.