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 0x04aa68c4847e814af265d2969f38a876e737df84dfb3e04163016dc834889b06. Chain 2 (Bitcoin): anchored in block 954555 (2026-06-20T12:10:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a8af8af3-da64-4a95-a24e-39690b2444f2.json and https://artists.proofprofile.net/proofs/artist/a8af8af3-da64-4a95-a24e-39690b2444f2.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 0x43c9c0f3ef48dde07886a2fef8b1073b18b6125938026ca0933cd45133df6ec6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/BCKRE2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92064c5a4b9c5bc355da727d6a66d06bd40694154bfd01005a4cb7ddebfed123. 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/BCKRE2300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ebcc13f0373eece4427d53a952b0ec26df3283f34703a2823055f4e4a5b821. 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/BCKRE2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc07e982ce916ab793f80535fe9c1b70b3c7d8264b17d47ee7e0ff213d1e0863b. 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/BCKRE2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f3ba639f94eb8f9164d3c60468f41960ffb91cd707fd569cc847ea42e3e5a8. 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/BCKRE2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ea67c9081e4106700d1497834fe1f912d8e0633b26649ad39a35d19de8bf31. 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/BCKRE2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35eab8d550dd6f304a3c5e561044e2663103221de005cf26aa790b47991f8918. 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/BCKRE2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7426cb7ef670c3e7106415108fd5899201e48b8a4c68f1cde67da6d916d8041c. 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/BXV5P2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3dcc05d8922589031cb93035c50fdbb55a6599d9eda31511ef67ca633f4bea7. 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/BKNBN2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7220cbbf84efc19f734874436650ed34a70f9f08d0c61644f503c63f3d379fa1. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/BKNBN2400006.
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 0x47350f2c184ece6566d86d5c5cd0b3fe8977766108555e2743700df8abba0861. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/BKNBN2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03c1d9de3186f82d38183a5f75b4e85ae3eea3e410d0575fa178397c0e39de02. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/BKNBN2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe7ac71c93e8cc009e8c5f7db0ee129296d263504495a0980b268b743991f48. Chain 2 (Bitcoin): anchored in block 958041 (2026-07-14T18:13:17Z), 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/BXPG61700010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0a793acf2db6efe04ae863c0dcbabc080b6f656546f7dd0e8f3182db06c781f. 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/BXPG61700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ee7e61b8a430f57ad118eed81fc41eff11a851d3fb4a4cb765b08841143b648. 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/BRIGX2100008.
Baile da Revanche / Cit. Boa Companhia - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2692216e3fde51cdf8d3fb13fa489cdc4b0d19c7e7b23f5e92cef5f667c8ddb1. 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/BRIGX2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd96c141fac5bc550839d6e6e25a01ac1d0f02a12013543af01605a22302bc742. 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/BRIGX2100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6199481f9afd8ce620bbe9ec972b57f49c8fa287bf0c78e95a911ef1bd5a25. 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/BRIGX2000006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53184f42a0823aa5708d50cc50afaf717b7ab0d9e822a0e6a4cce62a962a76e0. 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/BRIGX2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52b16aeeaec8bac3ce8f727a6b06371559f4db0840fa9be93df5e436d692a430. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/BRIGX2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7843e3030126dce2cb17bd92c0bdda0656793d75361744476f9a301790b7940d. 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/BRIGX2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68e4628de16cf3719e88d037e973d26fa5cdab05e329621f1591e571447733c. 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/BRIGX2100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f06e7007e477f8f9307dfcfcc1bf729266cc9926e79936bad0dea7c252c61fb. 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/BX5M02000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad6b327d07a093de39563b4079e3dd9a14ea400a1b08e4e2e26a51d6c484988. 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/BX6EC2400017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077220dd6b5a4f2d98aab2b8c134f13afee666fe89c371fb858df112a0116588. 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/BX6EC2400015.