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 0x3f893131e149f1e01b1039f2c8e407d1d29e8a969f16b70d81f44fcd11e243a3. 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/cff17731-f8a2-4f5e-8b15-304bc327ca56.json and https://artists.proofprofile.net/proofs/artist/cff17731-f8a2-4f5e-8b15-304bc327ca56.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 0xcee8f100ec41ac4a62f2cdbfe9f8daffb8d4612eacf0f06b84a523ac33572730. Chain 2 (Bitcoin): anchored in block 957820 (2026-07-13T07:54:01Z), 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/QZMHK2391412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd29b4a7cacaa7f827a0dc7bf655a3530b74e08e70d128090ed8b89548f0a70a5. 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/GX8LD2205309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x236ad5b26f99acff86cae05bf17bbcf43f5f92b4bd49254d5bbf0d1d1e1b9e53. 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/QZTAZ2238557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd02cbf4c959646b88a2658af6b6718b30653a3ef903442fac3054ee76a54d3e. 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/QZFZ62313581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd40f78e84cd36492973b47b3bd1438c42d541adf97c66e27e750d8ef5d910ca. 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/QZMHK2337482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e12b21b3a0efb767246cfd15d391cb114ab631d42f37585c5ad53af2a00bb2b. 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/GX89G2230904.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1058b9e76b705f477a76e0fdf6d270e60c369a29dac1009b5178c5e4f5f72ad. 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/QZS662464095.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b0fa21a87220c14bbb1607af8f1a1929a61d313b30d64961ee0027cd42d801. 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/QZ5FN2300520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda6ab49854218b543dddb6f042a75d67233f6456c4638212986dcf968aca5e0e. 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/QZHNA2433017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb55af747e85a548cf6acebf0eef018b04475dcc01d787ac7fa0c581aa2a9756. 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/QZ5FN2317550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57bc8cbba6335021f264a325a0a4b4b329b5ae174f1b6b7d11cc21243ac91284. 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/GBKQU2460209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9bd23aeba03c299a103dc6c25e8f36643d81dfabf527dd9fd2f10b5071059ef. 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/GBKQU2455187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfeda4e5ddc2e87d9fb978cbb69197138f90f64204beac56f466c04aed79f5c3. 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/GBKQU2455188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab502af352320967e4d3ccbedd8d82bdbfa607157634385665d80173b013394a. 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/QZMHM2476757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a5cbe2fdabb6af4017dc0618249ec0c4664c0c20dac291dba9a4b1586d8892f. 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/GBKQU2423253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04556a1a9a1e9a3df19d3bf4fd80c9f28d2256b27d54de3bd266d090429c4872. 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/QZHNA2435284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ab980a93718b89593ada6a684a47efba0e45e6baf59860c93a056916331599. 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/GBRKQ2375809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5a5dee6c8840c23fc3ea96864d5ee6707c39d5bba561eed619172f1605911be. 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/QZMHK2523097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5f3e364d2f417bbcf67b30d304862c31711899884aed7b10a231ad7fce1bbc9. 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/GB8KE2426113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42adb0b2597ee8898e2cdfd40be4a513f0ea928e797201dab6683bf35c1e36c2. 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/GBLV62407832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e58f8cb1f5453c14a61b294cffa3f4a3e01ee8b24639620d7a6af289d33da5. 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/QZWV32483166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbadc196efd73e071e2dc010ccf03ba66374e81a3a1c38f581a42e994e447cde4. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/GBKQU2465363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93328a1827f27f73029eedc7d05ec673a4ab7ba55c0cec4a7767c64105967022. 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/QZTRX2362747.