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 0x3fe32d72128ff62b0a0bb336ac46d39d00b4c32676e2a99ea6377ab9f846f5e4. 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/0f7ddc70-1596-4360-917c-f9fd3e06db7a.json and https://artists.proofprofile.net/proofs/artist/0f7ddc70-1596-4360-917c-f9fd3e06db7a.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 0x6772d4202006d4c788abda614965192aefa067718812a675c847a01001c7f79f. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRCDH1700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3c4ecc2cd2328eb25ae5600d3f8f84b2d7cca71a9ffeb3fe9795a3349c8d7cf. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/BRCDH1700002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe703317339832db0e7374f1bc41ff7176540920df8312543d15dd1bcc2010561. 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/BRCDH1700003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc049070ee76673886b220931eb4a231eda432366333a5b0415fb5c43ba9b6c1. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/BRCDH1700004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e22b8cf95c6be2fca21218e1f6e9d065eb6b69ceefdb0907342e1224de3880. Chain 2 (Bitcoin): anchored in block 960166 (2026-07-29T23:39:29Z), 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/BRCDH1700005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77051f8f2a1c86d83b0148b5968851d9d4f6bac4994f0df565bd1b1054315380. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BRCDH1700007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc289209464ba72f3e1a2eb01b19e4c3f49a521b9ac38956f709cf24498d87354. Chain 2 (Bitcoin): anchored in block 960456 (2026-07-31T19:53:57Z), 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/BRCDH1700009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x066ded91301b9246477f730fe9ef75d02720b4af3a86b12e6bcb938725e8a575. 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/BRCDH1600002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b54e4eaf503133c17980d01265e169b9087485ad21e0de92e63c7af12f59c29. 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/BRCDH1600006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c83ca46d27b3448e90325663ded03b39a329608dd310174791b930803c82c6. 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/BRCDH1600004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe71e471243a204d9a8972ec8fbc97c5b480312a5960b89276b490d36d5895c19. 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/BRCDH2000004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7468c71a4000e423a676ed518f936534c204fe272b8ef57ac07df22d9e41765a. 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/BRCDH2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805aa42dc2633cdace7b652c095b49e1a40114fbe0edabbbbc1129116ce9a013. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/BRCDH2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17d6ebdd6dba28820ccfc81e7b2ebc38a199b9c5d5285ed5661c967db3e96e01. 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/BRCDH2000023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4441d7ae62722b98d5ba891dc1b0ed792e09a6b7d24e42cd24e740d0efdcbbf1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/BRCDH2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa72433d694d97bd7707c51281a6a8ef546bc0d351fa6587a1b474fcff18094ac. 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/BRCDH2100001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x580d2960d6a155c6bc9a4293b9a9582445195411c0fc1c9fad841e45c7804fd0. 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/BRCDH2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4339f078b4218fa58cab3d6ed59eb9fe28a80d79f31827a37c26037068c2cff4. 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/BRCDH1600008.
Shaking Planets: The Music Of Sérgio Benevenuto
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583519b7f7ad5158ca2e147a43a449c62628936a8f4bb4b2256bb7ffb1232dd6. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/BRCDH0600003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa8be13b61ddabc4f0a7b80c97895a6a9cd324e327746df3aa5f09da94a7cb45. 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/BRCDH0600013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1371ac9e86b114be11448ba248a63f06696d9b3382eb5f6836a9b2e2ea682807. 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/BRCDH2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077aadf86a8c5807e538a36aa54b70b7e8f41684bb0e7761d7a7a56c91838217. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/BRCDH2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb32237f60840b608b17a4247e341d957129cd83c23a2449a7cb0da39e29c5415. 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/BRCDH2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4441d7ae62722b98d5ba891dc1b0ed792e09a6b7d24e42cd24e740d0efdcbbf1. 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/BRCDH2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7468c71a4000e423a676ed518f936534c204fe272b8ef57ac07df22d9e41765a. 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/BRCDH2000026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x805aa42dc2633cdace7b652c095b49e1a40114fbe0edabbbbc1129116ce9a013. 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/BRCDH2000024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c601ddc8be1393755b3d4769b6d83cd4bbe375ee018761f879c73799356d067. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/BR2191500812.