Leaving Time is a 2014 novel by American writer Jodi Picoult. It is the twenty-third novel written by the author. The first edition was published on October 14, 2014, by Ballantine Books, an imprint o
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 0x8513660f027116ed47bf85dbbabc8bead1d539f4e7f0137aa63db730eeb64909. 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/59f9c0d7-1d6f-4e07-8357-37fb84017bc6.json and https://artists.proofprofile.net/proofs/artist/59f9c0d7-1d6f-4e07-8357-37fb84017bc6.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 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 0xea504b30e94412cf82212b8a79618920ab14a8fca2f7f13b2ec6df8d0bd8d654. 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/SEYOK2100404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff71219ee3c280ae21a28abba1817af4cb1efc41412ce60c1c5922d995c317e. 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/SEYOK2100405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02c53faf4b9650b1489829e445cc7bcbff7346e954bb24f961112b0a78b2599. 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/SEYOK2100406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b96f17253bac1be1f0b756cbbc575ed3c98a3b8e3f51ccb62ce237cddf5da4. 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/SEYOK2100407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac9765737585bcf692819b4b7ad2766c3303ab1219a6fc5b52284ca4c268afb7. 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/SEYOK2100408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeea9c81e060812fb718020f203c6d389d878729800a72fedf2e8b569b8a4012. 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/QM4TX2286828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e4863407211022a4c549c8747d03f87c55a39746bd15660813f8953b182736. 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/QM4TX2286829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f258f5831fccab3700916ec2c45a32cc933f325491c67cd4685da01b92371a0. 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/QM4TX2286830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1ad30911b37db1d5b0231bad1f5f3727eaefb0234f7d2ba6d70db9aeff5465. 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/QM4TX2286831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cedf6189f11fadf8880f3b16bf3e2e531b76514c196f3da306b0b4480472a8f. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM7282492531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaded1fc01527da569c285fb326342213aa8a23f1d63fd00b0f31f4518dc9ff8e. 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/QM6N22429914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36daa850416c8c9e12eb42ce7f24a337348d00ce5ed808fcc6a3808e98e2b36b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QMDA72207760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x313d90fb7b56bd72cc4a294703e72950c36ac57d47fef3730a6076816c80e426. 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/QMDA72207761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa01b1242e896804f00c2f322b82bbba926de797d75ce1385fb019a348eb6a2be. 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/QMDA72208803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeea9c81e060812fb718020f203c6d389d878729800a72fedf2e8b569b8a4012. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2286828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e4863407211022a4c549c8747d03f87c55a39746bd15660813f8953b182736. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QM4TX2286829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f258f5831fccab3700916ec2c45a32cc933f325491c67cd4685da01b92371a0. 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/QM4TX2286830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c1ad30911b37db1d5b0231bad1f5f3727eaefb0234f7d2ba6d70db9aeff5465. 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/QM4TX2286831.