1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x38814677b8ea8fa1c52980dbf171cd64e12f7b191b2acf2ff53078b468078796. 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/3dd03d09-3e52-4e74-bbe9-a41cd5b2f290.json and https://artists.proofprofile.net/proofs/artist/3dd03d09-3e52-4e74-bbe9-a41cd5b2f290.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 → block OTSBitcoinBlock must exist at that height 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 0xf2c7f4b6c06d676636bbc9e475b01af6ee1b9966778db87c3182dfe4c15e21d6. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FIECL2301906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc66ab7d75a29db6dc3a9d420905c13d7a31e12071f3452feca3928dbd6899ead. Chain 2 (Bitcoin): anchored in block 957830 (2026-07-13T09:15:55Z), 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/QZVEM2388133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327a2440cf0ee43f9fb9aeee454e0bb513024d5ffe653713c57df2f5e319994e. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/QZPEW2414472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x360ed1e04fc1ba42e97458e7b5266707efc57a21122d19c4c5f6c2bc609c779d. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:55:45Z), 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/QZPEW2414475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x713af02a78944c7bb8259f5427cce379fd5d50fd430514beec162ee9dab05861. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TLVEM2461815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d7b9cc893c42e76fc5692fbc1e1b9d1a64b3ff381e205bde173fb94d68c25a. 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/TLVEM2461816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87568ae7c58af0074ef674e6016d6a3863a39bb63c9436f192f0180ac79a283b. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:15:29Z), 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/UKZGC2408027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8bab5a404f3414d3daecc60004fc8f396f4d1de44a48d0420655fdfb3b0477c. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T02:28:59Z), 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/USANG2444113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73b8f4003d9590fd17bba373ad3569254c9b0ab6f73236964784e2c963052a02. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USANG2475389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b9c5fbc44b1546f54f677b31e22a0b29be8cb32dd33ec96729753b7026c7d57. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T22:19:22Z), 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/QM3DF2405828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14ebd532f16e7bedaf0dd3976d4e154510fef964373ade97a32b7a4aade86670. 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/QZVEM2552704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75d3f2705b6b73bdee30e6b27c9712a5bfb9e47512f1c151204111eebd6ca7ee. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/QZTBF2596010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf61c9b5589d0897052b135c5d4da8cdb34f1c17921c96a427d8696c54812bc. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/QZZ7P2547619.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a77411ed26f8c01113e6b23ae73574253cbf5da0f03bb1b9775d4b341e34a34. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/CA5KR2497623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x578eed2f48ac0ec56a719ea1ba498a8070ccc134b568f4564a8b8b7f76a9ed3d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/CA5KR2497633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f8968f3bcea17b1a742faa244d11211cdde7e5450ca1d23101ad9050308c97. 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/CA5KR2497643.