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 0x800159efcbfc2f2296ae90b18ed7e363bd5661e4293969ce34a1ab312cb60af1. 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/b9092d14-8d1d-41f4-bf2b-9e8f6202c66d.json and https://artists.proofprofile.net/proofs/artist/b9092d14-8d1d-41f4-bf2b-9e8f6202c66d.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 0x6a7a81f9ab19a2a996f50177e73ba38d7d091b6bd1af8076bbaa8ed4f1e5548f. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZTB52482538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2a43a7c7507778fca130fc0368091e4a224fbcfa4a2db5cb764d094c9082e78. 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/QZTAZ2416119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29e594c11b16b5bc68d066fb279a64c152489a5349e50f024c2dae40b252d5dc. 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/QZTAZ2416120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ae3c844a4613d0d2b9a620a3dd4643c3ab7168108534190a8f60e068c43d1d9. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/QZTAZ2416118.
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 0xcc76e7231c1dd44d69dcfd2602da6def4d7c0c4a36f0c988c1aef814f48b5711. 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/QZTBB2328473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8113501543206ce9bd9d0016318fd359e3756fcb5bc32d51c7907bef8925843. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QZPLR2338884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33a7f7cfcee8e7d9dfe5521b81444004d0d3073fda9597a33861bd86c649cbc2. 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/QZMEN2356276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9985c284aa0fef7f284a946c3084feefd9660157aa69836d3ed2212cfe08aa15. 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/QZDA42331308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadbf9700a3645b6e501bdf4844417e596bd61a5f45bc25abfcc9052a1566d73f. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/SE6XY2262550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57f8e495b3a1e374c30f298f6b4152c8836025570ab4e938381e622f6a4d1da. 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/QZDA42418972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9feb8eeb8d721e6eb4c421890b624b0599ff130ed69f1db4467056138a767f51. 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/QZDA42418973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2f19c7879d470b5f7dea05cec35e6c6b4dffabca46660c018506c3ea05fdf9a. 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/QZDA42418974.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacdaadd83f4a44f5921c0c71c8134833abd579904f6a2efde125252ccc86a4a3. 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/NLRD52352671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22d39677b8d5046c8de7f86ec85260c2cb56680d21557dafbf8e0ee041f2f610. 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/NLRD52352673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7213c7c438c045fb66543e4cfce6f2957b1d3e5caa36499bf9a77c79e514fee0. 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/NLRD52352674.
D3M0S1//ARCHIVOZ (BYE BYE) RIP BABY VARELA T.Tooop
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1fec053eecf5fbe89f574af2b0ad075b7664b3212a2386c91ee8f39be9fab4e0. 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/SE6SA2456579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b4a09afd30780720f14d6bc502883c8308c584acd10c45382a24e702de17a8c. 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/SE6SA2456580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x496b66f8f8d9ebe1cade08e022c5b21039e5062bf10d5ace6c3cab924906a9dd. 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/SE6SA2456581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc685105271d5ecb1da2c73cc9a91728f34f805cf26750ac468e75f120ca62f73. 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/SE6SA2456582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9615fd8fa300de2f98612d40f408a6079e9be1bdf023630089a030319ad153. 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/SE6SA2456583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae0f44b865b267996d710aa9c721d73570f3f490ec9d988a3b73d8ca2c188425. 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/SE6SA2456584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5195e0f7c39df8b330fd074fc7ec7cd79d6ec57e280798392d693bfb61004f39. 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/SE6SA2456585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2b658ca5aad96ddec15dad1f4f1f6260d04ae593f3b42aa8de187ca46e9052. 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/SE6SA2456586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea2201e289694ab3d0ee0a97e3c5bb6c8044b0602ec593e540befc97664f7516. 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/SE6SA2456587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x332f989a13ee9e17bf841d304856e53eec1b9e3c9bea13d95c52d724b43e64ca. 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/SE6SA2456588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb110583777646f5a6d5e11071fd4de1223a2b4534bbab867300d00382ebb460. 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/SE6SA2456589.