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 0x9b5206091461de702047c711bee4f4359d7789c4e57608d7c24daaf4586bde27. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/53969637-e378-4218-be44-46f6f84a7ae0.json and https://artists.proofprofile.net/proofs/artist/53969637-e378-4218-be44-46f6f84a7ae0.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b6eafb6580e03f7b636fe26ae422c04bcf09910cb03c13b51edc9376aefeac6. 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/BK2242401364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d4c608f56ffa9f8ae169b9bf603c9fe1dcb0e0d79531a8f9d3f2461100ab154. 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/BCGUH2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d7cde01e05b944ded3ad6e142a8586d69da670d421a2d1101076c80aaf6fc0d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BC3PG2303107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0144a5c5f74f546ce6b79e97827ddf0157a887d09289516539226d30440630c9. 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/QZNJZ2469757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x312d49d6b025016d2408710df17b3c39f852a2498725d003eda31e0a6f8ef9ef. 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/QZMZ92450666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf78f136844197887a6249b6cacd283bf15c122242f5ff02610f1d9f7d418e1ef. 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/QZGLM2493686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0dd78319cf4dcae9a8fca02bebfa36795aecd80009f663eb6e1ea5f3ad510f5. 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/QZW9L2362236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e81ae0fd914459ccffcc241618a5749bd215bf2b5948573ca9add1cdf97aa1. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/QZW9L2314212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d1adcda31fcd3a8517a9123d02eeed9fb6995d1dab6e5fb214d2e7960195e35. 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/QZNJY2326711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49df4e59cc6041ac19017384b88415447bf70563c6772a96fbed2e7b4809ad8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXLWP2300115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9ca516f24f3495f3b60f2792d3390545a8209edec56a8638ec49820a31fc3f. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZGLS2365277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe430370edfdf4b516cd92f5b04ece4adda123f80c31720ee25d8a6eaf08e8c1f. 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/BC3PG2205522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb6c8b587a3c0848a17e1fb4a674cbf7c536fc92debcf391525acef77781b63. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXKZP2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93aa07e10ec97a661de5652ba93fb6333c101c47d4d33de5dfe1c4f31842e7ce. 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/BC3PG2205682.
Medley Amizade de Valor - Amizade de Valor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac7bc45081d02ea97ac1fdd427de893f13d94d1b096c2b418e3a018926a54afc. 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/BX6W02200026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecf4bce93ea9484d86f36d0ee74aebb755efd0dc0242a1bb835bd92d1da474f4. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/BXKZP2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb1e703d3913b08628d086c50c1de98107bd5850dc9eca6dfe7a1683c10d67b. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/BXKZP2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9361fb4d19c97a7d24d84ca5cb5bcdbb8a729d55c22987fb05b7d38c6eec529. 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/BX6W02100002.
SET DJ DIEGO AMORIM E Z!V! (Bloco das Solteiras)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdb3c627b4fa3d136ab49845529d8f0c4868bd720b8f39710b6c509eb9c7022. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZMZ92082074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd071d02d2d30ba6d9fed42221c0fe927ad308d6e3e2e872034a39c86d41d2f72. 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/QZMZ92037111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ade26a88d89c4ea1f76a4f19b678ff7e660554f7430a3f86e7677d16d9bd24. 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/BKEHX2500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f93c5289f3084b3cfaf09091a8722b267d228da7f1860ef109921f454847d8. 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/BRWMB2500263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24279c68895b4d3fc48a43b64e7cae2134bedca559f1b9e64f737d549befd1d. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZ5AB2313050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d71267282bbeb19773b5193fbdc08d96c3c0d3705f840a8be81c9a6a878285e. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZW9L2390323.
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 0x05d357ff326c528aeb5e494c3f4ee07525b3efb66da285d4e50df17c225a6863. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/BR4SQ2100021.