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 0x91577a1b18c4af0502d3d3d34ed08b3ee17116854328ff0cf7a04411db715fc7. Chain 2 (Bitcoin): anchored in block 953996 (2026-06-16T20:04:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/30dbc2f7-79ca-4135-9965-8ad4f6d3f914.json and https://artists.proofprofile.net/proofs/artist/30dbc2f7-79ca-4135-9965-8ad4f6d3f914.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 0xb009f99195b170db90a43478a8a25592a6bbc8d0a5eacdf231cd2fd7e18dda0c. 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/ZAC781680100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab803544977216cb711d44d3ac7ec1a2f74c492f3e99a4bec0047c669fb4d41c. 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/ZAC781680200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fd193aeb615647811e7600e3520287c15ffc53659594086af010aedd4b8f27f. 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/ZAC781680300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92270129f581542a0f8a01f041ed05129e9171d512edb20094dd5e92720cca44. 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/ZAC781680400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f04ef58743a343a2fc004b1d8a95c54a3d65de8b8cf1554d2a105c703159744. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/ZAC781680500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cd7b1c5051295d63371f90b238ae918ace8a85160e4d182e1e62fa8ee28590. 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/ZAC781680600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255fc2fe6b2db2dd7abd028b545221c43f29bb217dbbb6c6704aba20304ba9c1. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/ZAC781680700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7964132c340bb6ae35ba7a6a17610d66b06421b02d890ea57b1fef13140ea1e5. Chain 2 (Bitcoin): anchored in block 960294 (2026-07-30T18:46:00Z), 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/ZAC781680800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x717e69e6b35f697ec3e23769e315943f3c8ae0c1d34d9bcf5f038c41a553fbee. 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/ZAC781680900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1078aea276ba1522b139165f72ae607be37f6b05cdcc115aafbbb1b1b6e06ea1. 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/ZAC781681000.
Stilo Magolide,Scoop Makhathini, Dreamteam, Dj Tira
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3ec9d8b0f0bdb280538670f05db4a8dec35ca58391cad2baa7c773b7566891d. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/ZAC781681100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb4537b2a8590314cbcdcafa787c13b35902157631a6f89161b148fac748d1f4. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/ZAC781681200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c5e8dbab3df0355ddb5a6178d20b8ad11cfdf0175641242e25ffe3f679a392b. 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/ZAC781677000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c8bc4ec8a7c886fe122814d4009e5293921912cfd13d77301ade9157439bf4. Chain 2 (Bitcoin): anchored in block 960191 (2026-07-30T01:51:26Z), 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/ZA30U1700036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x030f709344a6fef387c7493683b051ebccc58eb15779052edd637875a9f92c94. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/ZAC781710100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243c579b5a4ad1ce48fefca2a7be0f472dc07bc24b09c1bc72e59fde03462e97. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/ZAC781620700.