Singing Sandra (Sandra Des Vignes-Millington) (December 10, 1957 – January 28, 2021) was a Trinidadian calypsonian known for her vocal performances. She won both the National Calypso Queen and Calypso
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 0x0b36daffaaca40db66860ba03a44b548994bbcaabe0d1881ecb1e07b9051cb41. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/99ce7f8a-23cf-4538-b05d-f329fe8c6be4.json and https://artists.proofprofile.net/proofs/artist/99ce7f8a-23cf-4538-b05d-f329fe8c6be4.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Goodwill Messengers of the Red White and Black
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 0x218496109ec10a8ed5cab6cf750c4d4900f47f8ee65d6bba70d38266e31e8b5e. 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/DEZ650801127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f3e9811a8b0894f981dad4b561a68b89168028257b3ff24c364c647d78c5c8b. 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/DEZ650801128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x281e7adf3011470476f0aba07a62d84ffe524357612513156f0047a35112ca75. 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/DEZ650807763.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42fd2e64187f55aa4375aff4e4d2d9d82c67d336e974484f0fbce1f390bdc260. 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/DEZ650807768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86f5a56a61c4817270c935a6664cd3b6994ae93411572abe6e519979415bc273. 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/DEZ650807772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8259a6bcb7d21c09fb0c0d5c245f40df8b4e681c507ac163b3effe2111c28f4. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEZ650807769.
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 0x35a1333513782a34023c1ed062e2bf14337e6b144459441683741fbbb2f1d718. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/DEZ650807774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd3b8ed1ed56946479b15f3911ec350ff0ed7fd0d7303d0a120cf2371cfa6cab. 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/QMRTJ1700099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58107bd40cfd74e9de9f6671904b9a033255a534dd380799d13323f351900cbb. 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/USQY50917526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e7576a9f59c80d3784bd9bce8a3c76c9d08bf46d1e65b26bbb8345195f722cb. 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/USQY50917358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0dea48eb19e60a587d3ec2d5d8e11f9f990ccc4b82c0e1f1cfc30fb5196bad9. 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/USQY50917223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd694a30e8caa5cfc8091a2a71e6b2e4ceecc68defcbf4ddf296b4727d3a8ed63. 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/GBCEJ0598644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335ba3ba77367d22fb8bf13bc780edd6a29f7aad9d8e29de93a50204992577c7. Chain 2 (Bitcoin): anchored in block 959159 (2026-07-22T20:43:36Z), 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/GBCEJ0598649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfe5626ac2b95d072e7c6407c58f80e2fb8d092f4ad808aac333b4107b63cdf. 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/USQY50917179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb94b5962ae6f4e09d3a6935cf9a32534ae3b71755a58f8942d3efaa7aed98750. 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/USQY50917186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e36d0bd6a9b8b4ebd91d78a9ef7678b526841b482002cba1652ff575bc47f49. 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/USA2P0743374.
2005 Calypso Compilation - The Perfect Mix, Vol. 1