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 0x42bee8cd95b845fbd673740f9d227e75f0d1846221c9050a958a2d338ec27a86. 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/8bf2bea6-a194-4279-8651-1c7c783baf71.json and https://artists.proofprofile.net/proofs/artist/8bf2bea6-a194-4279-8651-1c7c783baf71.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 0x172eebe0a2595d951484d37742bf2cd2341b0fee9688279c0c208a12754cee93. 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/QZMER2466145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b148b420702846c2c4e5c954b3cf77499715f6a949f4eb10ef7a1337a820d8c. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNWV2496831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf8a1a79f708e9231c9a27174798c8f9017086dde592b18abcc57820388ea06. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:37:43Z), 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/QZRP52442256.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8618c471b47d8df69e755aed63c3098445e612d3e17b33aec49cfde9c50a266. 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/QZRP52442257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40e9c2a41d8a0a237562ee65804a227e5a40c30b590f6317c1578fb2c2f52aad. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/QZPLS2417497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04ae0f4e3095191c4fec60c757904045763960d6942d10436590e42dfeecd1b3. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T16:01:20Z), 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/QZRP52442258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07751a23f135f1e2e15eeb01062853465e333315dcd366c8a9cdf43f1abb87d. 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/QZTB32414631.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd831510042d99720d02bb3742069d599133d3ba2e50818e9c7cc684fda1e8684. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:46:21Z), 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/QZTB32414632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x568361b29661107917bf53e73218fa2b4f0b4d77b434eadd3a1f49d77a6e2955. 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/QZTBA2427894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x088380693fbdbb1da84622c031e11ec486b2f17ec3c3c9a4fe31b0754717fb42. 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/QZZ782461771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d299c5bd51b06a7a2f8bd2d472c1c9aca40b209878c215e50cc0390853f631c. 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/QZZ782461772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55a341e031ec26eb163102b8b7f878e998f474786ff5938c4cc8695ed14f2f4e. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZZ782461773.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8b0951bd258487a366ad7cad441dc38aa687b4148859a9b116f95606b0c88ed. 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/QZZ7L2422911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42d0681f9f116c66b5ec5056e5939d53db53b76f51e00c1f02e5abd49115a53c. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7V2452184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d6480455d4ba24f1413dcad5af3ba54f1277f62462d23796cada27f2cabd52. 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/QZK6N2595986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabebb406f4f2e508b2c69ed952e2260be07d88a6d84b3f68fcad40623abdab56. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6N2595987.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82e551a35d4f5d0d1c62fa66c5331514c85dc8b1169c0954a83057f13b868450. 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/QZK6N2595988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdadc1f48b21861112a9f2d52cfa2524bd7cfb8d857b0d783d133e1db4820c28a. Chain 2 (Bitcoin): anchored in block 958830 (2026-07-20T08:05:05Z), 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/QZDA42533876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeebe1a02142c9c0d5cf7499bd9ece1175933e3a3ff58e2e74e1830817de856be. 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/QZK6N2595989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09001266efdb8cccb86f5b138b89df34d4ddedc93d2fb980e30854c4d24139cc. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/QZK6N2595990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55525566ae31f6abe57e86367c54d012aefbf3646b051e73ad39ecf050a4aebb. 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/QZK6N2595991.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d8760f86a698de1248069f5995dd4457eee7ec097f64ef5d2ae2df77a6fa924. 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/QZK6N2595992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4162e1f476967ab43681661cb03ba7437441ea0d60d817bbabf607e973d963ea. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZK6N2595993.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15c79b8ac4ac49b8dd0c4e9ef38e3bcfa82b757b70247038b957ced4b82c2d15. 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/QZK6N2595995.