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 0x84692d9d07d8de1200df4f8875cdf2f32aea3c5d88b309532de40539e407608d. Chain 2 (Bitcoin): anchored in block 953742 (2026-06-15T04:47:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/964d4d8d-a8bc-4c49-ac13-8eb85bb78131.json and https://artists.proofprofile.net/proofs/artist/964d4d8d-a8bc-4c49-ac13-8eb85bb78131.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 0xa7acb1bd2d4c7cf8d166657c8676e573734c942bf892fa1da37adad98371baba. 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/DEUJ62100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf32a801864a2ad667a5ebdb09fe2b329b49652db12a4fdf70ca4364cc55ab7. 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/DEUJ62100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6ab4ed532fe5e01dbf3ac61244e9ddebc4936e47678afb81d25aa214256bad. 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/DEUJ62100069.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x114ae3eaabca7d331b1cdcc32f60b8b43f714e6b745c179166040cf275362ffc. 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/DEUJ62100071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1bf6aa3c0804fa425815f61da3a0107bc601b351bb7c1b210268f92cea7a1d9. 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/DEUJ62100072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x345900bbd4c3ccb64040d1f8139953322c50fdaff1f4ac51e33c401b8b385853. 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/DEUJ62100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6561a94b47a9e088f6f13cec10ea9ecda9f9b69a75b30ab4acf16c143c446d. 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/DEUJ62100075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd937bbd3a604237cc37d29751dbae52b023102ec61500b853fd0d3bc8d1da370. 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/QZFYX1913683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d10b05562109584908d587c897e2abe784665ed8d2ac9d494c3390f8e50fd6. 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/QZFYX1913684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e8bed7f800e4541cc9c38a9ecb3b9e8084c1d46fb482de324a21beba82c3fc. 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/QZFYX1913685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6f371a491e58c08d84c4e4693ea700a2c44a957905812c2d82b84573170cd1. 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/QZFYX1913687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2409efc17b275a7acc73f4038ff3398ca2a331e92850edf278d86a3ff5c2cea5. 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/QZFYX1913689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a2d9e383a0adfe42d7b240b2524337d851522547a46287719f8d3095788292. 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/GRNRR2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7acb1bd2d4c7cf8d166657c8676e573734c942bf892fa1da37adad98371baba. 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/DEUJ62100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x429d6e54ae25f1ffd1d613b0b4c06eaa36dfad63bc8dbaaa514703e825834ff9. 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/QZK6Q1978577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b7cd927758777ed3b2ba2b069de0cc89a1c2ecc9617eea862cb356dada43455. 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/GRNRR2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a2d9e383a0adfe42d7b240b2524337d851522547a46287719f8d3095788292. 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/GRNRR2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf899be5ee8c9f26c2594eedf797d29cae43375c7ff7b71f9021e356035b8e98f. 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/GRNRR2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cd25732906654dabedcf91cd73b4e596ed9a4e9420bd0220f98ed08c092b7dc. 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/GRNRR2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e69a1564a853f997b5a05638099d7d551ec44169cdbdf0c15ebca2269fc791e. 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/GRNRR2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30ada963a28041f859f175feb3d80f6aa025a7df9d49cc2ca00c359237c57690. 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/GRNRR2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8af9d22b2d6cbf41fa9207079bc023e9f0527359191ad6d19e3c078a2c5265b. 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/GRNRR2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bfbafd8928805993250a30a4f48c1c989bdb348e7f1dd1b02728a3f66a18ea. 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/GRNRR2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44129973a4ef08073dcfc823bd1c6173867b9eeb907212b8e89bd7b4b22c9013. 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/GRNRR2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49060fb844ded925265cb15c0529449eca100d09a8413725060673adfac9f958. 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/QM4TX2515900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44a88d2bec000493b53b4af0cbf4299ddccde5a355a93c781ab200a84212d570. 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/QM4TX2515754.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4bfbafd8928805993250a30a4f48c1c989bdb348e7f1dd1b02728a3f66a18ea. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GRNRR2400008.