Heartsounds is an American drama television film directed by Glenn Jordan and written by Fay Kanin, based on the book Heartsounds: The Story of a Love and Loss by Martha Weinman Lear. It stars Mary Ty
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 0x8ecd58e8f823359362a6b89e89c770d1daedd179ca6fbec4bcbed0b19067f912. Chain 2 (Bitcoin): anchored in block 953714 (2026-06-15T00:43:59Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/842c9b4f-002b-4a0f-9ffd-a05303a2a82f.json and https://artists.proofprofile.net/proofs/artist/842c9b4f-002b-4a0f-9ffd-a05303a2a82f.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 0xfc72b560faa501c6cffd714a371504bb3e5bcc9bcfee6a9e21fe1c69f8d3807d. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/USEP41010003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6996dbe914dd73512bdfc35bfca961dbc49cd97f262f923af87dd6da40d8f162. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/USEP41010005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6dfb1eb1b75b5039afbb770a9f468882ea95493900d52edf3ad47a4c935bb14. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/USEP41113001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d432d9bf0e8802aeae7e3236b15a55227d9e889f957922c34b6a5c1c4993c8c. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USEP41113002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a36ad84cbd31e11e0b1a9440221318d410b903023dd7b095ef5fe9bdd2fd4aa. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/USEP41113003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57beb7dca983ad5e939480a1b37c4465fdd1dfb5287c72bcecaa93700b1f1675. Chain 2 (Bitcoin): anchored in block 957756 (2026-07-12T21:36:27Z), 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/USHM91311763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfba705cd2043e5d317d6c7d4c4fbe492d73e75ca920982235265a69bea4d1d6. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM91311764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2be3c6739f3d8e7754a5948b18dc4716b5d633753253039c9b08393ac71bac. Chain 2 (Bitcoin): anchored in block 958563 (2026-07-18T14:29:03Z), 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/USHM91311765.