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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd471927c10de4e9f9789f2caa5bfde5aaf7d2a367b1a63884840d50ccdeef95b. Chain 2 (Bitcoin): anchored in block 953907 (2026-06-16T07:39:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/16c4339e-4709-459f-a75c-01238492340d.json and https://artists.proofprofile.net/proofs/artist/16c4339e-4709-459f-a75c-01238492340d.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Hand of God: Season 2 (An Amazon Original Soundtrack)
Hand of God: Season 1 (An Amazon Original Soundtrack)
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe434f20bbc6e2426d6d6127941c317f8c79fc3125056061b49225d2c4bf72bb5. 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/TCADQ1852644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf11b1d5018f7bb18a53b00f4f8d0d67d49072ed6d2c2aeb545508a42401b5a0. 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/TCADQ1852645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34723c6732cd56d4e7296695181960d0e7c0ed85bde841cd4df232fae11ac0e. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T02:33:54Z), 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/TCADQ1852638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162c49f5dd088a20eab0633c13644bf161d551f4ebe022a7458d7ddcfe8a4b55. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/TCADQ1852641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0360e1c53e428f40ed17d6a8b9cfc402e91a30313abf6398c9b0010dcd32b368. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/TCADQ1852650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fd7eb8e7b3a4cd04293f7a0f7433e5a6bb2a32de0c3fca460d972fd1401f58c. 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/TCADQ1852654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0e094ee613966df311437d640ea49ade85e4424e2be6ab53e902b74e582576. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/TCADQ1852656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22420fedf0d2d9e13fddecd9f1a4e1e861649743ac0be696c5e7ae0ebf5c53ef. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/TCADQ1852647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x933d85230deadf0d420ac47cc39c3bbddf8e409b58b75b17d0fe92f94c1971fc. 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/TCADQ1852652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4c495ca7feca8c6bc3c1b3e8c03793dc174764e3bd3a4cd95146c114a009b35. 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/TCADQ1852653.