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 0x968bc107bf79620c67f849df9e924f8164c4460a64958cc250b5c6c51f278e74. 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/3b9599dc-2beb-4514-8e47-a456c2de086b.json and https://artists.proofprofile.net/proofs/artist/3b9599dc-2beb-4514-8e47-a456c2de086b.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 0xd6efcc9da88f3f7b26f886da867dc692f4d2ac1b139825f6e77622761a8c6000. 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/QMSEY2100811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec1d7282c610d88bf18e1632711d4853991c29f98d64c26f6fa6321cf21eac20. 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/QM4TX2280956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e0e0cdecd062a06f2f2052b8d17ea0d7d36716e6e526117db08cecabb4e368. 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/USCGH2187526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x449ed21ac41617dee70db50601a949023f9cca74e1cf81c407df462c286148c2. 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/QM4TX2280959.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28e95019c81a7aee2be3fa37decdb42aa6113fc98bcf72f345bc450908e6b6bb. 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/USHM92003722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e994f98087a3a645c624e6493af10f83b17cd8d97d885ce5c23f7479dc39d1. 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/QMBZ92481865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1b420316ecf2438a88f23adf9915d11c4ec51700770b9fd3b46e28275e672cb. 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/QMAAK1975126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c1a4f60656d9618cf7f3e1b6d91ce97d528b73d7f4dfa585e053286efe91a4. 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/QMAAK1975129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42611aa36c7803148caeaa4bbb9759cf03b76544bc537c591e22ccc42a37520e. 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/QMAAK1975132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1a8b46ad67545d10e6ca7600e66113fbd865b43aad873c014ca6f49807b1e98. 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/USDY41910032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94813d7a5ffabb778230434e592260d3ff03e1e8374f6330416a5e3a3026001a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QMEU32401024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a282340072f00666da606a72fc194487f4dad60cc8ae6fdcdc2e94e4008c427. 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/QMEU32309589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbebbb071f2cdd6202195ac52319dce564552d03334416369863efdf2e31d53. 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/QM6P42367142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7e0e0cdecd062a06f2f2052b8d17ea0d7d36716e6e526117db08cecabb4e368. 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/USCGH2187526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddbac6920a3e1389354ecd7e530a0fb09e485e696c98db69ae968d3eaf94526. 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/TCAHN2330343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec3bddb9e7075aba051e902889b05d5e8aa0934077fd9025ca2342724a0cc59. 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/TCAHN2330359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1e5da5cad43bb9207dac122fcaf52f5f4c355946f4ddaf9f96df15dced8a30. 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/TCAHN2330457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1d1f157b627436d06c711ed7c829c2b79d3cf8d73aeea7395e6ecf70fc6e8a6. 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/TCAHN2330477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e0fd76ef8cf36e7fec8ba891f2a3dd93cb1c3c27fae241dba3bda8a84db0be2. 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/QMSEY2300902.