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 0x99a92eea871be7615be7c2aa559986631d8aee8b520c37062fe46c27fa19d8d4. 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/dd0b82e4-2aa2-410b-a759-b3d9fdcb21d9.json and https://artists.proofprofile.net/proofs/artist/dd0b82e4-2aa2-410b-a759-b3d9fdcb21d9.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 0x49199544d1578ae0fa10cd96163b6927ef4b000070bdff8b14da33c54d93d550. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/BCE7P2400571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41989dcaff04d72240299d52e208ec74518fcd69cd874da5dc1a383473e712b2. 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/QZMZ92418887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2441c5e49b260ba8ca50d49256ee289233b41b4b02cc800029b22becf3e6ed21. 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/QZNJZ2304577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ca214eefc88840c5751e937d75f52942590ba72c9f9356e66fbee3476800f6. Chain 2 (Bitcoin): anchored in block 960339 (2026-07-31T03:13:37Z), 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/QZNJY2323553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd73087da2f23519ca177455da477cbde71dab777418a0388d7a3d389daa2266f. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/BRWCV2200020.
Achei Que Era Pagode ( Remix Arrochadeira )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffdb908479cbf6aafd667c7f493000b37d6b5a01a9385cd25846e63ff8966c25. 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/BKF442400137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0b91207e2c2980d377783f434acf18c9bffc179f6b97394e5c1f7f883cd8f0. Chain 2 (Bitcoin): anchored in block 960210 (2026-07-30T05:21:45Z), 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/QZ5AB2324447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7010fc31c331cd6502fede754743550f7c79fcec33232a66c7508613e71a8033. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZHZ62021524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1fad55ebc3fbe32d94c2cad55894c5d4bb03c1e6ac85561d7c786341438dc3c. 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/QZHZ32096949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2c312acd5c1a1fb96af2ec914df3018c6569ec1780a351c36c77e7cf9c66956. 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/BRWCV2200021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57103a30d0150a057e732a41552a6af68177809455c2d9446219be0a8f2b41e3. 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/BRWCV2200011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4dfad6f89fb463d37698aae8a88031220c955ee0b57ee160ccaba0df70a6ad5. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/BRWCV2200009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb670af2c7edca7584e6bceddaed3d3e256d27da8a936d3eb5c8ea32170290f43. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/QZGLM2519736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadf5c7dcce00407020f2a2d974294bd1d8654ff6fd2b7c9fb957f69cbd20aaa6. Chain 2 (Bitcoin): anchored in block 960231 (2026-07-30T08:33:28Z), 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/BX7O92400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80279eea1c6393e04edc01de710e7a7b6684f0b0c27817f4126d4cacec2dc7c4. Chain 2 (Bitcoin): anchored in block 960173 (2026-07-30T00:11:40Z), 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/QZGLS2312501.