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 0x70a3ac7e59391ef131e66f4ef87e32b82fa4ccc1eeef1c5bd1b0a2bc9f631f08. 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/94ae6de5-7110-474c-8fa1-ccab9d028246.json and https://artists.proofprofile.net/proofs/artist/94ae6de5-7110-474c-8fa1-ccab9d028246.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 0x582fd19721424d2586b4f120e1f056d7cdffa7233dae70a95fa897d78329e07e. 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/QZES82251560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d3fb80d8836b9acdcbf70dad103211b5d856bc34655a5de9bc0a7fa86d95eb9. 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/GX3Q92097636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36b34cc73ed27af02b9ba9d1dfee6675a48e61da7729d353c2c52018db7d531c. 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/GX3Q92097637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd2818dfebd812dfcf90579344a2da81edf223d1bcb75bbc66e27a7155a77535. 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/GX3Q92097638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446c87cc3b609a9903c9f644dce0c869fd742562a2f20cd82b25f74763fe0f9f. 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/GX3Q92097639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf30d6c4633037eb1f7d035b9cf533b35b53df8396b1a1c6ed1f600af8f33b7e4. 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/GX3Q92097640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x387e3ce38883146d58a145dc1410e78ee6b34ef0158f302d2adc6caa6864a6c0. 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/GX3Q92096766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7904ce827ae212de6698d7b022b9f00dbf98b1cf36d09359806c47b707be0491. 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/QZNWX2135193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73fd81d1b3b2c4631dd9c79a8b627aa0e0c36c08f2254ce0189ed95e86efd39e. 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/UKXN22345851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23595d7376e457c0a861b84ff631816bf92c9ff0061d576ef91bea37d2638bf1. 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/UKXN22324572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0e312a798a442b7bd0b25e37537e395321213950c45f8393f0b60eae36d29ef. 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/UKXN22324573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86527a7f0a867bfcd41ea46bf45990dde911e95324f39212115f4e5edf5519a8. 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/UKXN22324574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cd7346a71e78f84f25f5f06561f64821300979e2577f8a150dd85bf1c1ba4ef. 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/GX3Q92311357.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dfc976c0fd31e4f61cd9e36d8b49e25bdcc35a6f53b01cc4a5f966a736c13c. 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/GX3Q92098274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32a13d4dfcea8e102dcc46e46368c9d20620a241d71e12ce18c3096f669c590c. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-21T17:05:39Z), 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/GX3Q92096602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3230ee5fb35c2e7d70a8cde15c11cacd33873e54c88c765234195c4863098c21. 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/GX3Q92091281.