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 0x0459046623c7d12bec885c83c6b954b3558f94323ee93375b35eb6501ed8d6e0. 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/8f427fec-f4fc-4fc8-baa1-b1898b69d3ce.json and https://artists.proofprofile.net/proofs/artist/8f427fec-f4fc-4fc8-baa1-b1898b69d3ce.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 0xd87ed7a4ec8add4ee82c34a2062fd23eb488dea3098b45324a193bcf9b0aecfd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/FR9W11912457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0023b2000c70e2bdce3ca9159e0126b4a78383df4f49a050b57de061f6b5df08. Chain 2 (Bitcoin): anchored in block 959034 (2026-07-21T16:34:25Z), 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/FR9W11912448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x694beda8b3bcb1d63bafa48def5b38ccd3fb68484b2dc5b4777490472751a746. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR9W11912449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa810e367fd9d23c1c416acbfd86b198ca76f29e14a484a27df52c29205e8426. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/FR9W11912450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19966bed9cdfe39812b464cd4010c0381e4e8438ffc42d1570515f9bd4bf1c08. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR9W11818453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed5a3731615a1eb05f7d77475a39620477c448cd0fdd4d33687f18c4050de3a. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR9W11912452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd945506633a02488699612b20a587362dc6a1e1b9f831ff1efe41e21982d81c2. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/FR9W11812938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c70e9891f03ad7b5c63c9d3ab5c0ab9e53314d712a6192d0c51f00f618fa70. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/FR9W11827349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1be3dba28765e591212ac0024548d9c0ae31549cef0315ce8aabc6fa5a7e5d37. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR9W11912460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c9fb8110ce6e8ddceb7b3288a233c0f7a2afa619d7d5a02f864b4a8316e729. Chain 2 (Bitcoin): anchored in block 957805 (2026-07-13T04:34:37Z), 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/FR26V2003460.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5033fe8f0298f8830215763d08af49dc46e12b79d2a2f65aba9f5d57180a275b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/FR26V2003455.
Monstre (Extrait du projet Bendo X Vol. 2)
Sauvage (Extrait du projet Bendo X Vol. 2)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x839c8a657b6784e02c83caf1c8c53ebb2fabd892a83f724b7697e5a9a619fa13. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/FRX762148190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cb54c1f86f227b7751f01872e7b670d82918cca9ac4fc2b3f748e55433a53b6. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FRX202150283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00667fe61d2216f93f395dcc3cf5835590fef8d37f0a9eb62d799ae0aa6d8a3e. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/FR5R02213754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a83a907fd0f780bb1e5f0722f327fad1f2c3ac0342032942c38bcb73ae2abc8. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/FR5R02400692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9640ce805890e2c89f608a5de4f048ed06d979d028170576a7f5df5c67aeeaa2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUMEV2595453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb222a2e67689cbfd4505a971710d4549f983d455e51fa04539b803b85c3eb4d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUMEV2596050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cdbb8f53c02a0b28c9190e6d182cac6a369fe61830d1708ffee2f50cd908c5f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/AUMEV2596053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe757d2e6dbcea12593cf57878f3a1514d4b5e50ca4f494dd015d16df5821f35. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/AUMEV2596055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2b1cfd8d0c34035bcd45184917edce32db71e8e02aa40cfdff8ebd3ad8502cf. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/AUMEV2596058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6ac9443b56e6c95906370fd201e78e3d7c114c613c19e0dcdc3ef5599745e56. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/AUMEV2596062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7f0cee9b54ed75541cec2e876f826b52f5dcbcb4ba6751b57b56e128987444. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/AUMEV2596065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc208c5c25eef866a9b2d2e32a0d9141423cd19f33e34c307bb1f21c6b6f8d739. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/AUMEV2596090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9485554a6d8a25de25357323f73ad8cfd876aa2d5e721a012ae9c87e53a1b28. 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/FR0U91500052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e30fb1c1ba12a4020fbcceaa16ece499f64de7ff3ecfaa295028c84a17fca67. 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/FR8FB2209120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x884c0a4fb7706781cb2789b04ab7b9f10798f27ac665b89888acfe064d43e691. 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/FR8FB2014400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee260e46695e71019981b7bfd38545bcedad3f28477c710740debd750a6d621b. Chain 2 (Bitcoin): anchored in block 960473 (2026-07-31T22:27:44Z), 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/FR9W12127571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962fae9626ac1b63027cb11f68c854612f7b5ffa130200e00b879cc3fb137503. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/FR0U91500313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73253621656cc808b988499eb4fe1f39a8cf01bfed0cb5f348645de9aee0cb65. 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/FR0U91501713.