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 0xbbca34e87ae2771e50a38244dd8dc27fc04d2f95eac52b5a1459b288e8919cd7. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6b4fda1b-0bb1-41d9-9373-df3fe2a56cc1.json and https://artists.proofprofile.net/proofs/artist/6b4fda1b-0bb1-41d9-9373-df3fe2a56cc1.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 0xca796b5f911cfc11193377479c6f33484d6de3564d3ce189c9a8f313cd0605b2. 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/AUMEV2347507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb668c9a08e5c0408f32ca251c822467910b8a84923e84d0bb6dfd42b1f46814. 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/QZWV32325046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d72ff8a9f185efe6c0ab7d26e3bd3af70f99472783a0bf16e8be778502821b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZWV32325356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeeebe0f74822662e3f583331934dac280baccd3af4042d3e27df71d1710c6d3f. 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/QZWV32325579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a0c9b5683fbf48e7f9aeb433d074c6eb108a3ab089abcec30590dc1dcd161a1. 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/QZWV32325694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b1bdbe8736d07517d3e87e4e2ff28478415190981c445e56665e9dd6620408a. 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/QZWV32325853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35a8e8d410ea26f6c6799f7e0a8cd87f9b185f7f2d23e505326f361af1aa1e66. 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/QZWV32326165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2300366af9b8fb427f67ecc23f8e90e27dd6be0a9a07ab0007b38d8ccb34114a. 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/QZWV32326746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ead9768d54244dafa11dfe243191059289a06025c116baed68bfc9301b964ee. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZWV32325177.
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 0xc38607817f8c71ccbcd8f6dd17c1a3e32c2cc8cec22411d21d69ae1228adf043. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/QZWV32325998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1acc22c398b8cc52495a5b9ace5c08a90e4b7d88c5df8eb488618d4b95b97408. Chain 2 (Bitcoin): anchored in block 960381 (2026-07-31T09:50:11Z), 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/QZWV32326353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x935e3ab1e0241e1b0af940add470ad7b934c3ad8b85d9adb24b5cff937c18d8a. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/QZWV32326748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd4b2079fa55b7138dd642903c20822b87a39765459015f8ef6083d83525ad83. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/QZTV32435213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48dc6801a059b550596ec6f06973ecf59fa72e88a4b6008b5e802aa6cb2c85e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZTV32435217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa105a8db9178459bffc8785a40199b8cbeed1c838ca4d9b7039ae904c01ebe04. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/QZTV32435236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ba6fdbbeb4f641f5768b09060a0eb28b9e0e06b2cd0e9352218396fa605f848. 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/QZTV32435224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7099df2f554f5e183a846a2d56d39540af46e5fcfa372a76e3db1a3f7473076a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBWUL2573900.
Chingalinga - Versión Catrachos En La USA
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8906b374f47ba3a490e73a3ddd0c7e12630616b3efa35599e0446a28b767a7d4. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBWUL2573912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65e97fe493386809ddcff8c6691f5bb966f09ce893ba7491e4f38015f83be5d4. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/QZWDE2507161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53bda23eb695eb12a92efd4b6453719cd62d5655bf834b0e6170d2dee44b7b61. 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/QZZ8A2527472.