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 0x3a35645a9cf1fe1ad574ec063219e3bdc5e64d00062c0eefacd9673fe1bda427. 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/0af666a6-411a-48af-8119-0cc5b7fb2cd6.json and https://artists.proofprofile.net/proofs/artist/0af666a6-411a-48af-8119-0cc5b7fb2cd6.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 0x2ad63bc9f275a8ee2c91311fc24b4d639fde899b8c1357891b7625f33ca8e36b. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/SE6I32305642.
Beat Goes (La La La) - Charlie de Ville Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04c6aae5c669168314bb2af7ddb14609d4e8189f1f67cd9b79097f582ada0473. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/SE6I32305644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790894df6c6720a925133c0ad75dac734b9c7025d5ca7ebae19e4c135984443e. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/SE6I32305646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e6dd7c34cc62f9aa4acf65d496cf38f138c4676d6d025599c463c59102ee709. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/SE6I32305648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b75d8599f7fe927f4f3969acfc54947b0be3abc9a03d4c7376b87b86fcd58e. 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/DEPI82324838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826d5839f74bb084cda5a802c1465e0ff61b3903aa666b950bbe2a1fa2b15394. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/SE6HN2201201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165e942ada1a5f8f2ac4c76e051efe70d99f714d93572eb7444cb49c904746dc. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/DEUM72500759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4dcbfe7613a62bb54d602d77b86fa3aa37aa60414e71601e48f2527c8e99985. 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/DEPI82504466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae38369f48e011421ee71649470098d59d50fd388bff6ec01ad2f56d12d347da. 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/USLQ22107249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3af0bbe00f1de5a663358232e16f0c9fe3843eb1469571774aec24ece6564908. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GX8LD2380137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42283970d32b7e1b33ddbb9c28a88e37bdc03b1036d8a7cb85508ea3fc8a6cd1. Chain 2 (Bitcoin): anchored in block 960117 (2026-07-29T14:28:24Z), 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/GX8LD2378485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cec488f341644b4e7ca31ec96cb97cd12edafd7a12f30e48744967e74fdf502. Chain 2 (Bitcoin): anchored in block 960291 (2026-07-30T18:23:33Z), 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/USLQ22107229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff4fb9d367e98bcb1be84362f7f67586fd14e61e5fcb9a87a56dedf05659c88. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/USLQ22107209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f1bc46fefd3195e2b4d8d904acc691bef21ae990a31d7f5f7954b28112f3c0f. 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/GBKQU2339756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4713e8453f562f5f247f62c1942080a098a849bd861d1f1bc1cfc4bf10861189. 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/GBKQU2339796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a794d602fa9ed91fcd30dd74ac57bf86ffc28b35fef2fa72c3b6ed2ea350f9. 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/GBKQU2339758.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d64193be153d6287455875bf1d74da5a7b4e5c0e382d0e198aeac11d0e46ecb. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/USLQ22107167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fb127b93ae948b189fa8519d53479156a421322e0b0584986c024057bc07b6. 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/GBKQU2259679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b749ad97ceee4d70d6e493b82ede3c7c667bbe42f42491909ecfb54c3386331. 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/GBKQU2259680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02e3c035de33b24b0a5d8fee033a926a5098edbae0320c5065e1091e6369ff3d. 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/QZHN32291456.
Nothing But... Amsterdam Dance Essentials 2023 Tech House
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc729a237e988dec1ae93525bd97af50b9a93c9819f2a971931c20282ffd04a13. Chain 2 (Bitcoin): anchored in block 960150 (2026-07-29T21:51:49Z), 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/GBKQU2344609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37ee121042cca4da0e076af366372a7adfa528d2631781ee089758db7cc6682b. 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/GBKQU2271343.
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