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 0x200cec2f47413cbdf81ebfed9d55e4650f41ac4b5778f7b7a8ac386fcb4d837f. 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/b4d921dc-3649-4fca-b30a-533a57027b59.json and https://artists.proofprofile.net/proofs/artist/b4d921dc-3649-4fca-b30a-533a57027b59.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 0xd6538becdf5a0b3b717d41eca014d94aa7be0f21b37f8b5d909592431e8b97f8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRUM71704003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c2fefe3108945c70dbf1f43f80d8682e67686849fb8fddd86d8f74266c9f98. 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/BRTPA0100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2a33e8f9f8a6faf80efc55bf96831d0ffc8d250df3e7494adbf91c7f95d23c1. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/BRTPA0100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f0ecf65127919cb33c9a1d521a8ca6cf12e76f57fc1dab7393ee0bc08477224. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/BRTPA0100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ad59dbb1f4d1fc936e90fbe5c50b8eb56670f06e5876dff6da855a84dcec3f. 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/BRTPA0100074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31838efcb11138d692ac9103176b4b4174d32734673c00da36549794ee5ff0bc. 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/BRTPA0100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68a36b8a3dd1db31e34cca2f481e65134d30737f860d83e1c6d00f1c5c4cddcc. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRTPA0300406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2af424bd5db73296c3ec67927579bada39234facdb119f906af81f6b73910e1. Chain 2 (Bitcoin): anchored in block 959094 (2026-07-22T03:33:16Z), 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/BRTPA0300084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d8c6ed95e51b2c1663ee4040a58395f00620b3b159f60914e6ce88d274e2393. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/BRTPA0300407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef6675587d60a4ca4547f2781d6ae0b3ab0614fdbf22fd4e67d96d874d26ced1. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/BRTPA0300086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6440e9e9410ff1bd50a2e04686246dd20c9b6ded5c8f5cae6d131ef08dd290ad. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BRTPA0100172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc0e28a701d9b58158289f388663aa6054bc878fdd40a698d34662b05d7d671c. 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/BRTPA0300403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf34c2132be390c5d75f8007e09ce174ebf61bc48a12435bcd580c15a568f22d. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/BRTPA0500532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb422bedc889a863eaa459120306690f1bb6b37d75caccc1f540f0fcbcf53d4f2. Chain 2 (Bitcoin): anchored in block 958724 (2026-07-19T11:19:01Z), 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/BRTPA0500526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97d82dea633608b04bc86b1a68f501dbddd0e39737357b62592ddf2875a4931e. 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/BRRWC0900098.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba398e361f5f9699e998c782bbfab7a73ec1883cdf194e119c40338458ded5d3. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/BXCZL1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22da643834f88c0048a468098806681efea7bce3b77feb809f439868407730aa. 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/BXCZL1400008.
Noite do Prazer (Ao Vivo no Blue Note Sp)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x886ab1515ffadf1f86f7aa0c3270a0c6d59e7efd278c9bd4a9388d3973139ec5. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T09:11:53Z), 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/BRUKM2200095.
Welcome To COPACABANA - The Brazilian Melting Pop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8959d8fbc8a16520f52e7f5ccba90ea42c7e33713eaeb55c0bc7ce9d21a7682. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/BREMI9500354.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x548d5d6b245c131bac933446c9c7709d194e66e624d87430be004d84c77de1af. 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/BRWHP0100044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf66b58a4ea857baf3b8f1800f6bbc866fc71ff5ccfba2bfbf322c453b6124499. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/BROOB2000017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c7c8081708383c90ae8f7beee1c9d611c461872d415b45ce1e25d9a35acb56e. 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/BRTRB0400096.