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 0xb34467202c6cb5f4e1203bfc42e67b9591a80899999a34e20fe2064ca359ba58. 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/c7f2607b-00c7-4cd9-895c-b310047a6851.json and https://artists.proofprofile.net/proofs/artist/c7f2607b-00c7-4cd9-895c-b310047a6851.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 0xba1feb832d4cbea53c99cfc38863d1c7fe5ef2e5441d7cf4f857198374fee2c8. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USA2P1176443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a24250cb14ff6a6e72b52b870759b3eba2730ee7ff7f3d21bf7ca71d2c6a3e. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USA2P1176445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8db171c65cae73b993dd4fbb97cf0312b2815f27b4199ae963db51c636b2e5b. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/USA2P1176446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8613d1c0f059fc76d9f578ab607258a225f0d01b6f43014637c02ae00625e5b4. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USA2P1176416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65076a77518c67d144976ada246a9e98a7d2ac262a7ade2da27389fdd3c6178f. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:45:02Z), 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/USA2P1176417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e7a542368cf7407671bdf3b78efb99eed2b460c0f4d308e8972c173cda7dba. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/USA2P1176419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x692d041f205d78f356c272014e2c4620af2f8d300036f0f5fd6ac4121d7b4f6e. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:57:17Z), 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/USA2P1176423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3638063dc16bf7c86c2c406b110662f5e24851878de38b3abe015feb0b9efb73. Chain 2 (Bitcoin): anchored in block 958891 (2026-07-20T16:19:04Z), 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/QZ8251912316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa64f1f386cd189f4fda20623cfa7ebc4318e5f7a57a991a59a6d6058992f83c9. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA2P1399236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf81ffc6bb3e39c4b603b1b3fac66c9f3e076f96e63678256d38454c5fd8567cf. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USA2P1399237.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef14d80a4dc36c3ed53664560986b67ac4303e4c646aff44d424e0f9d0fd12e1. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:48:58Z), 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/USA2P1399238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda9824b35b393dd8e136b794df6f7939448fa6d6c94b6f0801ec16a4911d7316. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/USA2P1399246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a1511d029b0491a8a2d7cd94da7b868854fdc76a4a63dd1f78d3979dc2af991. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6N21710836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42f06964b77dfbfdc30e18d812dc7bb972fa7ad49db759aea73a53b5f1b73a30. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:48:45Z), 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/QM6N21710837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cc7cdd476358b7adaf0f1aedc31d1d789553ae5b771ed3e9325ba62862b2975. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM6N21710839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8de0151cf954a18608b98ab8cefd0ff15e0eed2f61b4d4f52f39f60fe5f32c. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZ8251935768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e47553e580965d91f7ec40219125d096e839a8d9b199549761ffabc57a53c45. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZ8252110465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e570ead24ffe704daa604cc7cb0778b26a150c0eb8661c6e76bf05236c55ae. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZNJX2278900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96223971971eec7697d7da03e37c8cc4f23184a5b92eff5bb1ef8d602aa338e8. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZNJV2342164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b1bddda66de8a029e6bb541143556664449068722003273f95134c18cb3559c. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZW9L2364478.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9484fd696a151986675418ef193b8676b83f08c286d58d416849d733837b36. 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/ESA092504927.