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 0xa351bbc03e3511eed876e027d81569fe4d9bb3d005c357e0c17eecbb2a10b57b. 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/24d5c055-49f7-47f4-8f00-5ab9bbff1b7a.json and https://artists.proofprofile.net/proofs/artist/24d5c055-49f7-47f4-8f00-5ab9bbff1b7a.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 0x4549def88a402fe28ed2beaec4fe745e946cf9e39fa307cebff2c66c3c312c15. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:34:57Z), 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/JP92N2456590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd12fa5cf49c0164d85e6ae43ff2dd806285521b3a6b05fe07620893e316ffc16. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/JP92N2456591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c4331477f5dd582a5c6b1f5840831fd357ac8d4c1b2ce32ce30e0d4b168db41. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/JP92N2456592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95cb6995a055be86e8ab6809386a450dd2b50444c3018379bd796299a558e6a. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/JP92N2456593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995a74291c219e942d0082cc26593431788d73403e54e619d1eb9a1c490a377b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/JP92N2456594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3122e733c7960e8d3d4ba72fc2c092be043f3d2f43faefdef36dee14f930536e. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JP92N2456595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe073e46e012be8318da0489d550567b92d113f27862c40012324cb56768d30f5. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/JP92N2456596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbda2ae0e9ac0696861e85c0fe1948b7e19e08eaaedc134ea5789a1338a0075d0. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:16:24Z), 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/JP92N2456597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79952becc3ec5a19eda132eea43dd746123f6a37517b4dbd7a25b5698dcabf10. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/JP92N2456598.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdc226e4d8aebf4f7e60cba21fac60f9916cde1651fd263c1cbf2c58169abfe8. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/JP92N2456599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e223448dcbbfd8e9863eccd98d0e4947c5bdd0999cc198fb677ef66c4c99e7. Chain 2 (Bitcoin): anchored in block 958508 (2026-07-18T06:27:01Z), 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/JP92N2456600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b0a981f2910704191d8e1e8741e2b7fa57c98436d12a2566ca7205334473e3f. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/JP92N2456601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc95cb6995a055be86e8ab6809386a450dd2b50444c3018379bd796299a558e6a. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/JP92N2456593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x995a74291c219e942d0082cc26593431788d73403e54e619d1eb9a1c490a377b. 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/JP92N2456594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3122e733c7960e8d3d4ba72fc2c092be043f3d2f43faefdef36dee14f930536e. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JP92N2456595.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c66ff927f924a8c2461316e6ec35dafa30ff017fc47a43c3c8d48113c6bb68f. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/JP92N2456602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47a954969e64d31553fe70582856d5f66abe3a4922422d652fb0241f5317d9b3. 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/JP92N2456603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde5907f1f0244b361a969de74f390ddb4960d413de6b98cbd1cc288eb5d3af7f. 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/JP92N2456604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10bd2b1cf5a31cbe1c4649f39e6700df6174a6df8d76bc48153dcb9fe9c0a1d. 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/JP92N2456605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e223448dcbbfd8e9863eccd98d0e4947c5bdd0999cc198fb677ef66c4c99e7. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/JP92N2456600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc5cc218c0985921a7ce61233493716936d490d7a35c48cf5d898df16cfd4712. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/JP92N2456606.