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 0x7c5993bf4f88fe249cb24095042a5ef3ce04981c53552f7b45909b857b261791. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/745fd454-7d2c-4b01-b60d-b5b78ef2dac7.json and https://artists.proofprofile.net/proofs/artist/745fd454-7d2c-4b01-b60d-b5b78ef2dac7.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 0x0057a76f028cea5735c6433f2f55b3d0e04dd5e181b05cba1014e86d8ae02ec1. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USHM81568557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8638440f5c277680001038f9efab5592d6950cf107b5779d9ac74650506e7b88. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USHM81568559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193a9a1e1c7275a88fa9e0b47ab434354fb50d69dcc76555ba9bf69562f5041a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USQX91701941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeddcc7b89479b01459f4f71043a12fe1ed001fbdad18deea0fb4c5501c8fec07. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USQX91701945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e39eebfa506186a1ad83b19f74365827c660a8053da3e2e84ddb3d34822f01c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/USQX91701946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x824a3ed328b6b56e3eb557f35b8541c55bc6f458c3e0f950d2ae11528f0e9d39. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:59:47Z), 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/USL4R1818754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd446f8de80bf939517770f9e2c6a14d0c4dfa41ba981853b3cdbef10572465df. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/USHM21951078.
Lauren Ruth Ward: The Wild Honey Pie Buzzsession
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda8dc1e672853322e64d436be54c7778c98246b7fa997a404d2910e814af977a. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T16:44:49Z), 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/USHM81910256.
Pictures of You (From "Little Fires Everywhere")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4bf9baf44bf9d6a961acab0444d6543c38326ddcbf90a9fb6fd8402d3beba5e. Chain 2 (Bitcoin): anchored in block 958420 (2026-07-17T13:33:01Z), 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/QZNWU2164874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfa12ca41007905860c9f62b1e21a8053727cb5582d2dafa22563ef09d5b30a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMHM2287801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b32b6afc66dd1a3a500c34e5d5c0757f8fa080ca8bfbe612b0e9f9b2176080. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZS652295493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfa12ca41007905860c9f62b1e21a8053727cb5582d2dafa22563ef09d5b30a. 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/QZMHM2287801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbdf818e9aea3c8b0c2eb4b5dceaec373ce31a97aab6f6fe358c82d2ec698b7c. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QZWV32321890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42c7412f0fac6fc399617f1b34d55c69d1b265e6aa26a5fa069d67d7adda6d47. 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/QM7MR2000740.
You Think It's Like This But Really It's Like This (20 Year Anniversary Reissue)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71628bccc4f3703d1c53ecb42f4c0260d860da732916a91c76691b689efbdbc7. 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/QZAZS2006908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4d47b4a6de3e9d56b55d367d73698f3ff3904f230f446f30cccd3daac2ca9c. 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/USQX91702671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91a5cecbf834a9e14161358be7bb848a2f775524454da7fcc837cf30f1d8f597. Chain 2 (Bitcoin): anchored in block 957084 (2026-07-07T20:41:57Z), 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/QZFZ62098831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x624da6cac61a96a9d56725fb14752e5043cb37c7098d75e215267da6254858fd. 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/QZGWX2027945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b3a9365388250e0baa5e6b144b5759b7b17afa500ea9cf6491bcf254ee10335. Chain 2 (Bitcoin): anchored in block 960145 (2026-07-29T21:13:37Z), 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/QM7MR2000399.
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