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 0x0ec723a72debc1010f65d1e76a128b0d367fb1f41c62315b89b3bb6d322767d4. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f0e56498-641c-4953-b0de-87173e1074a4.json and https://artists.proofprofile.net/proofs/artist/f0e56498-641c-4953-b0de-87173e1074a4.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 0x77ee00eb4e047fc6abedc98d7513411bb63f534bae39a4dd948eafef32bf3ff4. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPA609802630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x570ba3339a475317715a013cc1133d7030d3e8be02f23502ab6cdb0aba00960d. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/JPA609900340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe74a96947b28568cf98a768572dafe59ee085df33945d9f9017b227491867dcd. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPA609900350.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3ebf40227cf676caf199a862abab2a0e1d21ad7469c7d31468b5d5c869354e. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/JPA609901690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb76b18cc9081d3c0778af87df862dd188bb920ab37d25782adccb9c91837e840. Chain 2 (Bitcoin): anchored in block 959091 (2026-07-22T05:24:13Z), 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/JPA600001600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe498ed8dfd575d26ef49d6f71cf3591ccaa9f339c343ea3d7d565e3458bfd5ed. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPA600100070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdad4989a934a53b830657c323a858c190f175960b69d556b03d6c07c3f82c34e. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T15:42:08Z), 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/JPA600100060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ee00eb4e047fc6abedc98d7513411bb63f534bae39a4dd948eafef32bf3ff4. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPA609802630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7864fc0d7849005cd746a8800e30b5263e6972bdd8c4202bca0340d93a62ee96. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:31:55Z), 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/JPA609900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bb1796ee0a97f45dc3f476ae35cf448ea9d4c1bbe81cbb93517ce2e08fa114. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:11:12Z), 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/JPA609900620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8f471e683dace2b725c301abf4885e1482202a3fb701d07def86301248198fd. Chain 2 (Bitcoin): anchored in block 959128 (2026-07-22T12:33:25Z), 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/JPA600104210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3460e80a12e2ef8c297b199cc1f60207cca18e68e6b68e1bcbb3b692552d011. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/JPA600202240.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ee00eb4e047fc6abedc98d7513411bb63f534bae39a4dd948eafef32bf3ff4. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/JPA609802630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7864fc0d7849005cd746a8800e30b5263e6972bdd8c4202bca0340d93a62ee96. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:09:55Z), 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/JPA609900100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9bb1796ee0a97f45dc3f476ae35cf448ea9d4c1bbe81cbb93517ce2e08fa114. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/JPA609900620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa3ebf40227cf676caf199a862abab2a0e1d21ad7469c7d31468b5d5c869354e. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPA609901690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6e25f1e9f9a48bc7ee20e16b0f7695dd08b6e53a8fc0e2517ff193326d6daa5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPA600104200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadb23313813dc2be1e4bc42e7057af6ecd8d54a8c0fb9bf1293d81bb47c05cfd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/JPA600001970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6a6951f73d0912d43b05693fc1dcd26890227ced32aba6c08bdbba6168923e3. Chain 2 (Bitcoin): anchored in block 957763 (2026-07-12T22:01:25Z), 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/JPA600100080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6eef670ea91ca5fdadb5952364c9f20e2cbc4779cee7601fe5c1da6a07f1673. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/JPA600104220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x561b6d7dc4084b4378aadf8c6a45925dd801a1469668e105a27a7fdefe0e19e2. Chain 2 (Bitcoin): anchored in block 958143 (2026-07-15T10:15:04Z), 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/JPA600302530.