Raphy Leavitt (September 17, 1948 – August 5, 2015) was a Puerto Rican composer and founder of the salsa orchestra, La Selecta. Early years Rafael Angel Leavitt Rey, born in San Juan, Puerto Rico, wa
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 0x0cc9e36bbafd1d6587fdc12598d1b32e472fba03ae03dad47324acad79056467. 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/78853067-b889-4197-8812-bda7e21820a2.json and https://artists.proofprofile.net/proofs/artist/78853067-b889-4197-8812-bda7e21820a2.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 0xe821a3de43610b2face0c3b0b96284b81e5b2d843d566f370abbc967263e43e7. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T15:22:58Z), 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/QZW6T2200524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2a3e29bb31956f3fe99632e054db6649c8c303336f307db214286491416d8b. Chain 2 (Bitcoin): anchored in block 959037 (2026-07-21T16:59:47Z), 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/QZW6T2200525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e8a1476f20b66a0d59823a06aaced56292cc6012e3ab21aaa1fb4ad5ffcdd93. 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/QMEU31601755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb6a54df703440e0a09be6f7852089d5ddcb8202d2193d65f982a7899e1d8a9e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/QMEU31601756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07da01da2e34105835171753c1bdf6e56c1c7b61983e9ae842406f93025904b0. 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/QMEU31601760.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f962f2ca6b046eff0f147b61a841d00358c18686476675901c9a6b4c45163d. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QMEU31601762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db0d3a3d296bf045f492653adee9f1ab29f01e945ace854f096258e5620bbe8. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/QMEU31601805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd94087e42104632a95bf4c2bd66cdcc841aec253cf885b7e45d1b926ba95523c. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QMEU31601806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ced69e6b456caa9afd358d58f66dc18d9e9363fdc3299f9fe9837ce81c90f6. Chain 2 (Bitcoin): anchored in block 958117 (2026-07-15T07:36:28Z), 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/QMEU31601807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c1b975e633ec0b1df1eaa44f0f88342b941f795f5301a005bf6ccf0f49f67b4. Chain 2 (Bitcoin): anchored in block 959026 (2026-07-21T15:38:13Z), 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/QMEU31601810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92ee6ae3dfe392828b721ad2f183afe38aeaa89e482f9b114af339bac052f115. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-15T22:40:25Z), 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/USCGJ1397773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf05782c6a14dab6fafde3def00fffdab32d5a904481f489c2dd77582ba6b028b. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/USCGJ1397774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5cb0b3d77d488c6b0e12210f4cf030ee0a932987a9578224c4363b7fd8e6574. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USCGJ1397776.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5b73524ef5a4c9512a9d886b8fba99d2ed591b54563a3c32cd386a9ae95a0b4. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T13:01:04Z), 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/USCGJ1397777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b5a63d617e0d00ac29a58763b3f9986ad7d03e383cee1f451a32c49cf86305e. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/USCGJ1394997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23f24eb4e1128e982192031dca3513a4af323b2ad404bf0926e5cdafe3b34add. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/USCGJ1397766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71468415249cde8ac6234fce8d108525796ab7bd4846b37b098fe122b6b603c8. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USCGJ1397768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48526d189742b8b7e032a763b740d1b89c0681b7a200a99c5f63c2ccac43e6d1. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/USCGJ1397772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x627331abd675b6ac11e541603ba75863ed2ed50fd4a61872e272eacaa4cc73ec. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USUL10200534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f10b7efe8920b955113c7b5613a8de6321dafe04726a6f453a8d67da4e70c0b. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USUL10300387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b47ef471e246eb9b412a3eee00973d3f9ec1c3e9f31e836583746825b99f6c0. 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/USUL10300397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad405397b435a5fcfeaefdd03566618bf70d33724689eaeb76e1d6414ed47c18. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/USUL10300395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3af32e71a6c76854e6dd1e8a7bc58f78f2965d47629c93191244d5b17747782. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/GBLLT1921846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3698ddadb11646eca468e1063d37ebdfca1c6d566b66356a8dcbf1a7f0934021. 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/GBLLT1921856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a5bf2243fbeb9cbd5884cad7c2a000030118c420ff241a572743e18911a62d8. 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/GBLLT1921858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9bdbc6fe5973ae50f4f31ea21a6943c395ebd00097848e03f277fe4b7d59e0. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GBLLT1921865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476361d6650169a673a8c54c29cd95e4c0f3038f1b95f32935d86519a719c648. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T07:27:09Z), 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/GBLLT1921867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x274457c5c01bd6d87b28ffe9048f3c48cd8f08fcbd0cb9f3c4d3254dd256a909. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/QZK6K2260217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x193ded9c027b290c1a700b21ec7337dfc52f1a4e2eebcc1d70fa7afa795e4995. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T18:40:26Z), 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/QZK6K2260223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7069f24104757484440593508611bd2475ea127560cd22fdeb17f5ef7a940506. 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/ES5531227497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05a6a55946df9c7eb9a48a844707d187fee4e35f69567b0a21b73c8d56e24e43. 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/USUL10200532.