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 0x0d226c34733eeacea6cc57b8b265155c99849982fad861476c4ad57f3d772d01. Chain 2 (Bitcoin): anchored in block 953783 (2026-06-15T12:24:43Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d56724a5-32d4-46ed-8432-6522b5e96bbf.json and https://artists.proofprofile.net/proofs/artist/d56724a5-32d4-46ed-8432-6522b5e96bbf.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 0xaeefe345db641d50cd1a5660c6e545dca86ec772dfdb715a0ca22dffc4d91aec. 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/BX24I1900005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a994129b4c656252ad99a256b1baa138e2537556e533ba60256b650b4af7573. 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/BXCU91900001.
Suíte Pros Anicete: I. Chorinho Pros Anicete
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc5dd1fdc18d77f6b6c1f9adc052bdae26ff6bd1e14d660d7b1b807740dd8931. 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/BXCU91900002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf9c2c9b1095797f8102d9140c026a5b0928c2e64d1b7ec48f564bedb6af1499. 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/BXCU91900007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5a54d1f5a8728b7e81d762319aadec81f428d53eb1e719dc3e8abed248f06c4. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:50:56Z), 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/BXCU91900008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a6fc882081dd17bc15794236c4a498bce5e347dc34fed58a025b44db59fe24. 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/BXCUE1400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7ad6dc03af6eaa49946a6a5b0a64ceafad6850fef4a7113f8aa511c5347fab5. 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/BXCUE1400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ac85ba369b7c8203c1a7d09d7ac0685de404bfd691679eba8002f198f6cc272. 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/BXUHS1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12bb7f9e9299f0513ff4711aa671901fe8da7e794ebc313fa8241684b8620ccd. 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/BXKBP2300019.
Bach in Brazil (Original Motion Picture Soundtrack) [Original Soundtrack]
Die Gitarrenprobe (Arr. After Jesus bleibet meine Freude, BWV 147) - Arr. By Gilvan De Oliveira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbbe63839c21cecd669116ca5110881aeacd8585e326f4e9719d48889256db3. 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/DES381605005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf23fb87f36aa72ca440ba69a7a35b55ffdd21a3455d34f29babcec67d13bf709. 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/QZFZ32577246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20669a9c42654d74bf055b201627e5dbe85385cc144ea6c9c965327b7882dc5e. 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/BRRGE1803269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6ba5798344053975cdd4b919715322256f60120ef56a22e4ed3c6216e009e2. 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/BRRGE1803004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7376ac02f78f74e82ab5eb0092eddad196164a8eb3e45a8f27707020181ffeb5. 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/BXCUE1600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe669f7455fea9285a0f66434b272cd181749959927978d5d698d15596a806fb8. 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/BXCUE1600009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca73ad895022bfbdaaf4801cd381fc64c65445df0c850617fe6ac486ce76e101. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T19:08:48Z), 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/BRLOP0800055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72e6b9a7c68353874cd931ee63ee844b7b3c946505453a60f237bbec8755c76. 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/BRLOP0800058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a04084be7d71ae307f9ba5fa02bdd5c1fa080848622e3ab7b4a7811fe5c99b5. 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/BRLOP0800061.
Nelson Faria Convida Marcelo Caldi. Um Café Lá Em Casa
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5105cc453d98536e90e0724d896cc43942a419e009d0447b4298f93eb7cff4d1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRSPC2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9b5567e73109fd6580f66c39c5b4a3492dea9516867f50d0fc7c95c60e5ef39. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/BRSPC2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb83594e8daa9185a0f32d5d7947e21fbdfcc2272f1154067a94ec48494a53a. 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/BRSPC2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260ce08dae4a0bc76e3f3c84a6f3bd23ab6b47efb7de226c40d17bdcea3c463e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/BRSPC2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63e05db5144f61fe592738f5285f74ecfadf3cbbaf754100e3990bef7a2dbe2c. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/BRSPC2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4d235286a355d90ea2218bf36105f9d8b206d1b0e814fcec84046f878ce22bb. 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/BRSPC2100009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed903a0828abd29ee8e8a40f7563c2cdf5ef66d26d13aa58ea3b583768d1bcd4. 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/BRSPC2100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4f9c15b771e2da6d50c051afe805fb5d7bd9efd462cf4f540d01f1d7016435. 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/BRSPC2100014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfccfc00114c13f552037f14297820cc2102e004b28567480c3ec0ac207192525. 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/BRSPC2100016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc12b670a5dfa2991dace80fcad6ca9ea960c9c8d3dc407e3515f8c91e1132ec. 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/BRBG61100043.
O Ensaio de Violão (Jesus Bleibet Meine Freude, BWV 147)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fbbe63839c21cecd669116ca5110881aeacd8585e326f4e9719d48889256db3. 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/DES381605005.