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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3f5ff2772fedea9d08499cf9b041ea6938617b456eb2df82bf114a44903575. 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/2d0ec13c-81cb-437a-b2c2-cc8769807ef2.json and https://artists.proofprofile.net/proofs/artist/2d0ec13c-81cb-437a-b2c2-cc8769807ef2.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ad20339fda9ce3c6675449a3ccdd07b6cbd98ec87c7f5e4772a679fde13c4a. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/XKA031900091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30eb0a1b54e0b6e4b1bc16399359d27c3be81080dbc74c1babc44865b5061c70. 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/XKA031900132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eed02177790a33e37916772a7f00328c96d8c402ce78a90a7c6c974adffe18. 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/XKA032000323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11eed02177790a33e37916772a7f00328c96d8c402ce78a90a7c6c974adffe18. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:44:59Z), 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/XKA032000323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e1a5a9520a7a871c5ac4af9c03d381ce18e98bb3d9d8b7c3f2fce47dba870d6. 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/GX5MX2298610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad5b6d188c3e7f09859ed1256394903a514f00828656834f48bd3748e896864. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:43:09Z), 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/GX8KD2211140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3437bdbcb6f161e4494acc8fdc123bde3e9fc032bc9fe6a6cb85f5df12ba136f. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/GX8KD2211145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec22e6094554c51585ca1d77ca656b3869517641ae8729d7231cef9e81cae312. 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/GX8KD2211154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22b779642eecbd9a0251cdde09c4d941cd93dc92a0055ec1c776d1ca27c9460. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GX8KD2211161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de075375d2655502c072abe1603377543dde1c9324ba1fbb9a466366cd7e9bf. 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/GX8KD2211162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60bc56410da59bfb23a08ef0b91cf15bb79c24e4864dec91725c2af99cc35f4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/GX8KD2211084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a791debf7e020b2d0fd545fdafc5f737254b28307c0d5401668b999e3665519. 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/GX8KD2211107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3c9984da27e621c4296fe190ca56de9acd6b4a860ece11a1368f5060cf26d04. 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/QZAKB2444495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabdec487181b0abc3e874619311573ac31eb697631b032d443221090604f341e. 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/XKA032400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c8a0a5a94b8f58a2be8ef38bd4b0a3d7eacaf6e9016575dda36274c2c0ef99. 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/XKA032200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e3ec98f3d82752870bc2ffdc9d7832fef58e08e49a0370ebc9915f4b6ff98fe. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/ALA061900502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c3eb09b02b6cfc3de561fe11de794366d75ab545fcd4ea92875a1f3c4932912. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/ALA061900509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f32a2cea1e549856a48104f19fef5f6a3db3eb65a3c21b93521a1ac2e5c9034. 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/ALA061900518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6362bf05c6b3b8cbc0cc07a950b02c00e9c144c9444ca8f225b53e82d4c9fca8. 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/QZAKB2472966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6362bf05c6b3b8cbc0cc07a950b02c00e9c144c9444ca8f225b53e82d4c9fca8. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZAKB2472966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe63480e00d87f932709ee6d2693998751e8a52beb0914ed27774236e815635. 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/NLHR52237985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59c8a0a5a94b8f58a2be8ef38bd4b0a3d7eacaf6e9016575dda36274c2c0ef99. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/XKA032200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5c5f8f91294e00a26f1a7a1343969d11517372699e5e508f6418ca880babc97. 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/TCAJV2586478.