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 0xfc7112f3cbc798437a89000743104d7ece4ccc8d0a8c1da7ba3ffc33ddd05dda. 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/6b679831-7000-4664-8704-89adc17c503a.json and https://artists.proofprofile.net/proofs/artist/6b679831-7000-4664-8704-89adc17c503a.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 0x914098b3524455f5adf7e09c1119e336d0d339c11715358a0809a8ea38459847. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZES82276532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefdeccb1339e98cd3127651acb552ee003bc36cf605a935b370a48e25ba9c353. 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/QZES92289259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x136469a960ec3c93da2792f2b832673314d854755ab22dd43af3bc928067d75a. 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/QZES92289260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914098b3524455f5adf7e09c1119e336d0d339c11715358a0809a8ea38459847. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/QZES82276532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4d75dabe0efd3e9ee117791d5807ebeb59ba5f82369780ed42567a76ca5ea85. 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/QZES92289262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a548a100ebd3a649f8f7f02ba18bddec6ba8ba9b91468aeec5bf68027857543. 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/QZES92289264.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ad10a7705d2221691b96828d52e055b1f0fba863d1fde2e8f7e2934505d46c. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES92289265.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb006ae45625517ba39e2f113ffbe1639d8b71476f231db8ebd70924298d5afe4. 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/QZES92289266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x044c8b6e6fb3b2afda577eadf0168d17999dc7c4aedd1c866ac02ffafaad2967. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZES92289267.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4433591f43d1a083b30516466476f2e111ae6327c70a3fb8ba7882b7acaa9cb2. 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/QZMEQ2305125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb65b8e079cdf39d12d5d842aafd7831e4bf980db86f61a117a6a45a0d3b7ee. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/DEBT92400093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd5a9133ada42711f18ce405b03f04f759546780302a352d478f6ee5c6384375. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:35:51Z), 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/DEBT92400096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd534f2e0995a6f657b479835eaf2589d153c170ee21d268f3085023ee02bd523. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/DEBT92400092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ced41c2336b1529d0f348817a0f83b818c21d0148c6a9ac9d329bf4db3cea70. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEBT92400210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf3d040e5568d48717a3d952f4941c1f486c4cee7017a9cab49030c6df767f68. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DEBT92400221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6afa7c0625f78c53402f313abd6293650bdeb6d76fdedd610f23dd54821e934. 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/DEBT92400220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f796bd3abbd6f171983e0c894ce326f72f6f6885a04da963b8e86231fd63bc9. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEBT92400222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0cee6ea56f69b372484208024eb12eb7ed63d17422f9bb9835c78a9bb621084. 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/DGA0L2322097.