Doris Troy (born Doris Elaine Higginsen; January 6, 1937 – February 16, 2004) was an American R&B singer and songwriter, known to her fans as "Mama Soul". Her biggest hit was "Just One Look", a top 1
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 0xe6c60c03626009afb010007cdf23052a65d6464cd04d4bedde128c2cae929717. 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/0e205eb7-8bb6-40af-a4b2-f98480d1d2bf.json and https://artists.proofprofile.net/proofs/artist/0e205eb7-8bb6-40af-a4b2-f98480d1d2bf.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Sings Just One Look And Other Memorable Selections
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 0xafa7f518675b018ab07cc938f86931473c0db19ef6f31867245304eba2efe3c5. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/USAT20400050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c3b89169c9f3f2242ae401d22578e9d3455e576a5e0363e05f19fd103ff9ca. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USAT20401916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ca44c22f8ac215c15862fe6d0caf319fd763a160cf7b680757d8ac94455ee19. 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/USAT20402002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062e5cf905b8343e12e4e559f1011a6d66bd7f9f0964edf03ef38d6410ff251f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/USAT20402003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85bad60c37d1c00e0eeb5a45bfa5b53d4bc0bcea02858e4b451688f851005b6a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/USAT20402004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3cf118c9e9a74d7d49f33d8006242721060dfdbfafeb712604f17e5d127a933. 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/USAT20402007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd837adcaf497d079903f0848e05f9703a775196a177602c78eb9fb6055f1b666. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USAT20402008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f4565175a987457ae880771b86f5c46366346fa766d4c300916ce84994f863b. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USAT20402009.
Give Me Back My Dynamite - 2010 Remaster
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b5d2743ab6b26e176ca4eb70ffc1af5c15c105f3d72c7a63d6b34317245d1e6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/GBDCE1000147.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c9bd3bdc5519b7abbe7756be939f95ed98877c664d57adab7e43d0edadc67f8. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/GBDCE1000159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bc9100f7f1aa34d3658141a40229e0d009c03f72dd91ebda17b8096cda5f518. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USA371361198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcad06c944e78f30cf5ed04e61d2653a1458fd208f40989df7d3c51d21203818e. 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/QMDA71494110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2ffbd44e797bd2d533065f9e7581bdb6098dc45174bcc84754cd4488aa23199. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/USAT20702942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd4a2f4d066ce50267847076d1c800642dab49036fad6d49bd80a225601dd08. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/USAT20400051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e920c6eeb2712833519280a236ff8a44aa9da6c228869a90e8082bd40efa0d. 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/USAT20611343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8109dbe60ba8e74110482253badb469939a712bb5884a094b761263ef6b9a543. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/USAT21405117.
It's All In the Game (1979 Disco Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c14a15a6f87cb1d8d7dcebb93a9128a6f1f3d7627d702537382a762028bd8c. 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/USAT21205832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c14a15a6f87cb1d8d7dcebb93a9128a6f1f3d7627d702537382a762028bd8c. 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/USAT21205832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d1972606d3ee526013a9413bb82c95ce48f7e2a13798b4837c46ff272d7776. 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/USAT20001011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48c14a15a6f87cb1d8d7dcebb93a9128a6f1f3d7627d702537382a762028bd8c. 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/USAT21205832.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfde09a419c0d03a6a98ae3c4764eff5b393a4dfc75a54dbb44aa68e14c377867. 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/USAT21205841.
What'cha Gonna Do About It - Single Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cd4a2f4d066ce50267847076d1c800642dab49036fad6d49bd80a225601dd08. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/USAT20400051.
Come And Get It - The Best Of Apple Records
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x577bbdc3d1a778a142b2a71689c66ac6d31ede0db16e927d7f33bf2f23648376. 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/GBDCE1000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfba56f225266a55384edfe99358e6445a8e9328cbe63056ddf36e0fc5f4ee233. 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/GBAYE6600201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88dddbfac01c389140b798620d7a82fb4f8646ba1769cffd6e53669a2f3c1da4. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/USCA26700136.