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 0xfc4dd8939007dbdba101c6ae1b9b3a088d65beb737ff34b1d88510e5f171dbab. 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/e0e2fe9a-a172-4965-9985-c1850a3d7646.json and https://artists.proofprofile.net/proofs/artist/e0e2fe9a-a172-4965-9985-c1850a3d7646.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 0x58ba6932078ead1f6c6ed2eff622ae650e5f1cda6fc9baa1817883c4dd53fa53. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/FR59R1636944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd7d30b23fe8f60ae8aeea9c019d58b2a1cad54c8f28be27f83d75dd617d99c. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR59R1636945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf691e4a0ad72c1be875f79316f995c47620fb039d2d21c0324e8f34bd50fb7d4. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/FR96X1509215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81d5c2c8d194e34984ff4adff4eb1d6788dbe3d29619dae755c6c1d4e2ca15d. 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/FR59R1636946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4487c2e3e8e335f6c511a27a3de1bd1d6fc8eebec39011b1db2ae0cb8613ca0c. 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/FR59R1636947.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a2b884fe486aaa12a83a149febbf87623557c37f04124cfba2ea50da2b6118. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/FR59R1636948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd01956edf2bbcd315d3f9305755b7e9aba0075c2cb5d46cdec1c6612d69f8373. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/FR59R1636951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf991b6027ba4e514843dbbec01777f76d5d40bdaa32a5143db8377a7797d6b2f. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/FR96X1704892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0783f9bffd31edd1353b035f59ce22abe82a7f2eb2a23234b62db68f478e1600. 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/FR96X1704894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe55adb0348984f2008964f627f24f562e9d0d134f8d8bf158fac5cd6fee16f6e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/FR96X1704896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e4e948df198adb4fbf8ca13e51e2174622bfa12860ee16e7fcad43074c1e82f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/FRX201640881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16b2d45827674bfe8a887a7773b976df216671a72aa839b9ae574c4d5905e71. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-16T21:48:38Z), 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/FR96X1704899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28559147c15fe2c2a267b6c2db90fb38a3e0b366903e356aa5e51b2be48cd31d. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T04:30:07Z), 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/FRX281701997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ee994864d4ee392fa4d39a82f9257f5d7b8822cae482a123d8855e4e257ced1. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/FR96X1891604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20ddbf5eb439022e3ca61f14ef7aa1c42079bc91590ce1a2763f2822062c0186. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/FR10S1920435.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x062c93681740cc5e611b2881f23c8144242af509708c1e9416bae7f3ba812f07. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITR632000715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d47db2151d39de4e476ff588d45d09a0b0757effc14d6c365ed8a281322b8cf. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/ITR632100241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e68088d7ad1cbd639e695b419644918a8e9d15f5aee4661d56e905f27de652. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITR632100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38dc2384252a6573658f1a8e49a135e930287e6db1f3a950f250a36a95d5c92a. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/ITR632100448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13612dbfab9c0fe3993a21d57cbf3ab8d0f5693779b2d3bf8f9af86d3ef02c17. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITR632100742.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe538bc456753b078939eb2433a52f28e276985fabd12fceb2eed50c495402cd. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/ITR632200368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76c53b5bedb62c251e1e71e339f6f3d864a8aec04241a0f8935e65c82a3bb32. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ITR632201190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dd495084c72784374d96702a898fd4bc0f7c8ddc486f0714878304da2cbb8c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITR632301126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f68c3ee43b7e79e81bb418877ab841ab58ac8a577905df339f0b86844f4044d. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/ITR632301128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d464a6b5904647b8847d2804f1fa5f57cecd544dcd158db53b4a4a123541cb3. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/ITR632100099.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e68088d7ad1cbd639e695b419644918a8e9d15f5aee4661d56e905f27de652. 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/ITR632100255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0409aebe7d1a8786d3d73f0c783903943e72328c29d00a576467b0dd6107ec6b. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T00:01:46Z), 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/ITR632100484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11cbde7b7217e845a68d934f07776f789d341a844143526ff6423d0658c3f5cd. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITR632000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ab3fd54c541d9508b291c948e93c3af6693cf4e0886ce8ae010f4d575053e63. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/ITR632300341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40588885fc8fe6f9709aed921ebd56df3b3c5ddefd32d7e95c2c443e0bb7ea72. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ITR632301314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb83494460fa9ef4dfa0ae03a44c9c8b8a9fef78da0e7e6facb24f14a1511404. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/ITR632302026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78482f6f994c713355f3669c6e20df120d3bd2a4314cda0a1b2eac587b5097c3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/ITR632501046.
Mi sono Innamorato (ENAMORAO @Gabriele) [Italian Version]