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 0xb5fc0de2a9c406a3e83bd9f5b7123f9980e6b256ca69505540fbe82feddc9744. 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/77344d3e-162a-443e-a697-8018ddd40a3b.json and https://artists.proofprofile.net/proofs/artist/77344d3e-162a-443e-a697-8018ddd40a3b.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 0x44c1bf04b18a1a156f2c4aebd559b9461366d34871b42efa5567cef5c66d7bc1. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DEAZ31019351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x235b539c256c491916aaf8cdcd6fd324ae6d0242b01bf79c0c0162eb757ce565. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/DEAZ31019355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd214d07b529c875400ec6bafdc6a36706ffe9a58c2321bf69d90a39442f4f77b. Chain 2 (Bitcoin): anchored in block 958850 (2026-07-20T08:32:30Z), 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/DEAZ31019358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a18b30b834e5239d39dbe5cc769ff726c8af46e54fbd7c71395f4381a87e47b. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/DEBG61201376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x558f90f3258403ef08288ef9f4fa4485a6e0a5c3c24400064e6249c16857f4cf. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DEBG61201377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d2b86be4bc6d8252f42209805aff139578534a032d1360c4bf2b6810daa38cd. 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/DEBG61201378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e0ab69cfdd965a2fb10a23316ef8a0f6464b9e4f3984e3c672c0a8a8ef8e3b2. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/DEBG61201379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c76c88a1596362342304326cb28e44d6e82640380f5bbd0940488c4c873221. 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/DEBG61201382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf724299f146dd9f5d93ecc2407a2437fb893c0b396e15a0587a1510dedd3bc6e. 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/DEBG61502927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ded7d66d51a7806e748c375d243b5174adc5746bd5da949af5e4d845cafdab. 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/DEBG62305741.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe700b6998e02d6553f27607dc9368e4ea4770568d09a615382ad0bcd4a88c43e. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T16:17:58Z), 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/DEBG62305744.
Ibiza Beats - Volume 6 (Sunset Chill & Beach Lounge)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x464f30d31b2f2984929b6b12a6740f456b6e7a8de5d6778945d6cacc27e00df7. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/DEBG61201375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf200c5a94e9a64b6dbdf1988d02ab43ff617bcd5afd8391fb53b79309e445515. 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/DEBG61201383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda11fe6abeee1bb57927b53a0324918ead4ae6ba1346480cabb80b603da6966e. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/DEBG61703355.
Loungerie (25 Amazing Lounge Tunes), Vol. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90b97a11717907756dac4a897605a601ac05a8436e41ccf39672ad9cddacd5d1. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DELM41304777.
Ibiza Beats, Vol. 9: Sunset Chill & Beach Lounge
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d34a385773bd3ae64b39b418997a436e6f47b31c24855676b7ef5bab387cead. 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/DEBG61201381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf49ce8decc41ed7bb5dd8093ca99a4c7d50bb2099d4d7ff3b1f8dd1dca73537f. 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/USV351431618.