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 0xc0e27fcaa78d21a271f5c05990da4ddf1dbcc7f2f9a07aa637027e4cca0cb512. 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/089dc833-dde9-4a3e-89ef-720258771657.json and https://artists.proofprofile.net/proofs/artist/089dc833-dde9-4a3e-89ef-720258771657.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Babel - Music From And Inspired By The Motion Picture
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 0xe7a7eff54486f725be6f9eee85c88e029cae7fffa71f2acc432a060b2b342eec. 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/USC4R0614167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13bc8a4db53fe9b26f4d9ffa59d18417d0e20af573cb2d0995c9134d75174e79. 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/USSM11600222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9df8bcc3203741827384271404cb31ad9cbca0a62c3796c420db5aa27ad49761. 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/USSM11600230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfeee1735ff08c51b6b41147dfed9aebfa2e57ba90339ae4ad1253984721fb6fb. 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/USSM11600228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd7b83ab470665b6b393f5ecc6bfc63c7421d0bd8f41498b6b8131f2a3e87f1. 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/USSM11600224.
August: Osage County - Original Score Music
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ee47a070c162e18f27f2dd3d68c8b9240521ab8281f797c2867bf4885489529. 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/USQX91302804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc964aa51ffa35c6530892b7504a673dae94e920114ba24986189ad93c3e264cb. 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/USQX91302805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887a88213ebec416d520438b1b535e0fb645376fc2f665a422c709b86d811394. 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/USQX91302807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5569b472b7b2c8577626b63ab8986ad3cc08c63c0a1841fed894668741dd6b68. 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/USQX91302808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f5676d0882a5d3e3c820437f6bc2851f5922d51a9a9886440af503d8753b5cb. Chain 2 (Bitcoin): anchored in block 959145 (2026-07-22T15:39:05Z), 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/USQX91302806.
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 0x97b9c56be5cdad4a3592cd26201a6eb57473fa88a4dd568295a7eff49be81ffe. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/USSM11600219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe446d8957ec946550fb560978d788bbfe6f124dc4f4eb4824b02bba756af855b. Chain 2 (Bitcoin): anchored in block 960179 (2026-07-30T00:39:11Z), 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/USSM11600220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b6323870180f7a5b18ebbf9eba93aba876d0c7f38b4fa70ab018e53d6077505. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/USSM11600223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f89c476b03777f36a728eed91cea8064695857890c057928cece2fd1459da0c. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/USSM11600229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x414a99f075b66941824138e97eb851852334408c0c08a2d95f41b1b2aeffb338. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USSM11600227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x304fcca73c0e4021a141b2ab6a9fa2c8e0c6603c909d9d055a49b04597e82de0. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/USSM11600226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dfcedc18e62d21e972718371a5e8bef1b17daa9799a159a4b38378497e79f86. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USQX91302802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf16d8184067b1da4a6b2abaf923bc34d612ab1340cde49d7d97d91d7819e8d0d. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USQX91302803.