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 0x1797e48b780cdb601c1a8727bac345f9e3743f6a3f54de10d78a46855bd95c13. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/cbc29915-9cc9-416f-969c-919139841bab.json and https://artists.proofprofile.net/proofs/artist/cbc29915-9cc9-416f-969c-919139841bab.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 0x475079f23cd18fbd1ff547ac8c5e80c83f8e636399531d184ad634a079d57498. Chain 2 (Bitcoin): anchored in block 960410 (2026-07-31T13:50:38Z), 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/US7VG1965021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64ad3ed72a34bb816b1e95add41414be0c3f88c3eac3974e64c61ab63520a42. 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/US7VG1965023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdd7aa5cd066b24d05091df4294d6258f20dd158dd97564e4890776e8ec49d3. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US7VG1965024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bdcdb4a14fc18666fd355b4e44b6acbbf934daa754911f5fc7238313adcfc99. 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/US7VG1965025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2e46c23d1610185059a490dcf3f3fb688c860ecc18080788020a7d70adeea85. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/US7VG1965027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fc0927ad3f912160452c1fe845d2450dcf8d576efe1493c09c63c53275b1a90. 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/BX61C2200001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48a80241d61128a1c5e7579507e2195b218eaebdc92d4db05f43e1c3d79f7e9c. 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/BX61C2100008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79db106596a1d637e042db386d720d205ad28b67e3b7d5a280ed5d8dfefb4426. 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/BX61C2100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef296141f1faf809c8b32c3ab9cf39701708547e8b55813b1f6aa9e9c0b7e6b4. 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/BX61C2100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf71d367bcc003da11c5e7daa51608a6334b973f16850c75cd95947a5962bc85d. 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/BX61C2100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f16e4a2d4d7db17e0974f7534e5ad2feecf06ee2a156d45865022d337a6181. 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/BX61C2000002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc99339325183ef68fe62442a0b94c116ea45ed3c9f8e5f74e24d436be67e95da. 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/BX61C2000001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92754ddcf147d2dc662f25d09cd8289d0eac754041c27d19c8b168403b631828. 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/BX61C1900009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd14fef3d2e2f5e9cc96eb844273455135cd36246b78593d0c317df61bdee9b7f. 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/QZHZ51927876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a5b134201c8e06ec17557392b18482747378c62b2608b74e4420e9d8b8946b. 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/QZHZ41963272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800f4c2ceee56def3ffbd3f21db2e6e21012695fd68d6a9a4588913a030378e3. 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/BXUVV1900049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb920553d0a3b7f5e727a162068ed5e16fa90a0fb9b4ea33389148344d7fb4d61. 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/BX3PP1800001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2adfaba4c2b4322769a41b07b1c44e15c7764706a194f0bda10cdcd51bff3000. 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/QZ5AB1992916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2dbd8f1a1238e677855a8b822915e99e710668953ac619417352a6d2b4b3cdd. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/QZ5AB1992917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c7ce0a49513c6a200a25dfa027d28d852144a99b0db16b79fb1c1e6436bcc02. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZ5AB1992918.
Fricote / O Gavião / Vou Beber Veneno / Bebo Pa Carai - Ao Vivo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3831caa624ffd9207353c5ec6c08690c1bae09cb21f492a0a3521c7dfeeb04a. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/QZ5AB1992919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e90bf365a8a8aad982d55a61407ccf7a3e1c6de4f4a0f32593d9a6f27756b84. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/BXNT61800062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c89ffbaeb7f482e5f9c9ec0cf41bb1c6f526365028de7974fe105957642b12. 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/BXNT61700030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd3b689483d9091f2760e08ce839ea3bf2dff5dcf6caf9e9a053adaac1a692d9. 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/BXNT61700028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc1730a6a1fcad433ec8f0c00b65ac2b89ff708a1da3006cf48f1d7cdfc2a37f. 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/QZ5AB1713407.