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 0x634a85e616bb99cfa4801b72ab382636d3272a63309798f6789aeecacae20a58. 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/e0aa922a-a96e-40a0-bef1-140142354955.json and https://artists.proofprofile.net/proofs/artist/e0aa922a-a96e-40a0-bef1-140142354955.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 0x308488d62007782e011a173606ee51c196931e9d500952fdc28510a9f2494fec. 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/TWU712401524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea68ff82f1fd3a2a1210b0717824216dfa687717b3ca1d50538c70301ea9052a. 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/TWU712401521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x645ada611b234009394ecea4a0b9ffd1b48fdf3cb5b446e349e891cf89cc6fe6. 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/TWU712401528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca07b83f5575b11d87728de6811ae5f5bca9b291001b998168f8d857c043be0. 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/TWU712401523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d82c7174930028e5b10eb1a62e46c0f3d03a1512c2173e7e733524caaf02b59. 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/TWU712401527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d70e25dad4d86111e7b4c2b30a1b340b3825faf9c8fa008d5ab704ae0eb808. 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/TWU712401520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ab84387d54771edae20798ddfbfe7a058a697c9b0d4d54293a98a90ece12055. 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/TWU712401526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85898db5d68fd34469e664d80df4ba821362fdd17c48f62ac0fb5c9dc5515674. 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/TWU712401522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08ad223f22061b378ab1f8206e7bc382c28e7a9cbecd0ef6930c486e74252f03. 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/TWU712401525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71aaf9eb5a68809cbb089138cd928f7c060d50bed325b71613bbfe531ef708fd. 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/QZTRX2458059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1235256cca50337e889c52507773478d45990d4eddd5f4a2609f8ccdce6cdad. 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/QZTRX2458512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedc96a552617b7a24ca6db60bf0b3de9c25a8bee40de726b48b44e722e8a8192. 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/QZTRX2458525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b401d0e077b3b0130b083c62060dc1368f5cba9fe0387935c5794ddb09527f. 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/QZTRX2458548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x262aa0c59bafc3e74a488ce49bcaa1f5d21f37138b887a7daca8b8e55304efce. 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/QZTRX2458554.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fe1cf75964b4c29a16ed24966135efebe136645cd76aa9d7332d043fb597a40. 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/QZTRX2458591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ee00d0245bd03e16a8788232674490fdaa73da005ac1784ccbe4d6b099fe2b1. 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/QZTRX2458596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ee3f065eabf0237fcdcb78fdc690615c890398041720d99aeb30270294268b. 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/QZTRX2458597.
A Mother’s Hope (From "The Tale of Greenbrier")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9428d0f6ee44706f2af295a049ec755636129cb469064c79206bdb5a05c80b0. 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/QZTRX2458600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x452464741d132550e7fc21e2234b4a0507cc4ba46136e3476c5b8f5d9e2949ae. 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/QZTRX2458618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4104e0cb4ceb940d71ccca528417c9e02dc518b43d7c5a0a88a04547d6283e88. 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/QZTRX2458364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4229e5ed49b874f9328af2f511bde18ab73d9a2879d19f62990df0330b90fe9c. 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/QZTRX2458652.