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 0x5c61e5260f27dd8fd874651f90bc9df7b7c4944044eb2ed7330208d7f78308a8. 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/39bda4fa-975f-450a-9185-07e1e6ccd755.json and https://artists.proofprofile.net/proofs/artist/39bda4fa-975f-450a-9185-07e1e6ccd755.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 0x6d85bd69c26e178f40cd320e97d36cbd42e678eb467137d8f7d174b98c01131e. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/USHM22130059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7c698c252c906188577df09124632e0c0a3145bb3bc36e2e300e19b1425623. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/USHM22130061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af1da4e42d3660e3d8afeafcfec402d12757e1205053a8418ae01d82f65418c. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/USCGH2290378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e6a58caefba84577efaea6ef9fe846a029c202b7336ccc41cf078e0833ae822. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/QMDA72218508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5be5aedb56564548fe3e25b59700147fbaa2e98b962492c0ec4cd8a3ea7e0ad5. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QMFMF2236122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f25c487001b12f08549f772b0bcb77f7172cce10f14af643bd7f9086d68dd23. 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/QMDA62316889.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47a41b120fa549ad3445b53ea3d19b29584a691777d38d15f8278920dd56ba8. 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/QM6N22423084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98e804c1a0ce9088593295e525a5316070fa2d5f58705dfb6ddd8ceb9465608a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/QM6N22423085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44efb45a9622f670c14b46b8b659e94a7db9411074d3873568c81f813a60f9a2. 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/QM6N22423086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1592b107fc6deb9b0e62567b464a6101d18157379ab995df4e5dff29124aa84a. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QM6N22423087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9897c511b8a3e7b13b906a147584767b39be759fbeec367569cbb97446195a99. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QM6N22423091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1abb8357aa2e490fdd92520b66a179ba0aae29b1e3372d31e98abb90bf60f3a2. 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/QM6N22423090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd52cc0602df79855e14a7bfe859e905986593f92049ad9df65bbd1bc22d67ad6. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:10:32Z), 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/QM6N22423092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfdb768c3ed0352dbdc12eb53f6e77901c9655bf424227726dfe4aa31ef6aa07. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DKM4R2500201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd697237bff6c9e5b46f24b663d47fb7981e75bed5b0303b9459c214a75ad7f. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/DKM4R2500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6907f675fd51a60a9d415c72e06f6d606b484db60781167468b98d7ecfe79c21. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/DKM4R2500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8662fa5fab6d2fdd13e8c1ff5dbaa504c6fdc3564b09480ad3340f611f5bdf1b. 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/DKM4R2500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504824a27be64c146c24c7b722da972ce4e9f3804ecb8cea01bdaaa28a88300b. 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/DKM4R2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2f972684e3ecd6e24d5c1c8dbbe7ebb9c28a6f29f889b414d509969b1274252. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/DKM4R2500205.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cedf495249f7336385ec54118964a165d7688c08dc52e69d7586892f2786f94. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DKM4R2500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf94de9d589111575d458302cb7323953b39f7e3ec973c740e0e1783a8a7d8f. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DKM4R2500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa4a5334e4c73e0476de205ab26161158636578ea399a41311e4b293f9a585d4. 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/DKM4R2500208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd732cee1301d5e25b541a84175ec595452fa9ba373a887a151ef40001184187c. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DKM4R2500401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd697237bff6c9e5b46f24b663d47fb7981e75bed5b0303b9459c214a75ad7f. 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/DKM4R2500202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6907f675fd51a60a9d415c72e06f6d606b484db60781167468b98d7ecfe79c21. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/DKM4R2500203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8662fa5fab6d2fdd13e8c1ff5dbaa504c6fdc3564b09480ad3340f611f5bdf1b. 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/DKM4R2500204.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x504824a27be64c146c24c7b722da972ce4e9f3804ecb8cea01bdaaa28a88300b. 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/DKM4R2500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cedf495249f7336385ec54118964a165d7688c08dc52e69d7586892f2786f94. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T12:17:51Z), 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/DKM4R2500206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cf94de9d589111575d458302cb7323953b39f7e3ec973c740e0e1783a8a7d8f. Chain 2 (Bitcoin): anchored in block 958473 (2026-07-18T00:52:36Z), 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/DKM4R2500207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x67efdea46ba58f9f090b0451504b10a7c4f5ec1acf658f464511bde9148f5ea0. 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/US6QR2500008.