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 0x86627f19779ce52ff21a2da245e69ebb1be16af0b6ad817261fc2f3e6f1f9c70. 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/e986690d-6160-4969-8f16-573228ecf14a.json and https://artists.proofprofile.net/proofs/artist/e986690d-6160-4969-8f16-573228ecf14a.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 0xb2a052499f7c4a507e328cd5ef0f1d24d14dbe31abe3ae44af307a51a35458b7. 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/QMWZB1710765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3bf96223b6b18a7883044fcc181783ecc01d490844092fd170776876bb99c69c. 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/UST8K1737255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5751363b3eaae0f5407a972bd5cca54fc68bdf49820edf3f0caa6ee92b9510e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:10:29Z), 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/QMWZB1711943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd366562c160e3ad67338faf48dfeacb4eec2f3cb919acab4c2e23dd62ceda75. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/QZAPG1834748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x169ede2c8cd3d1418ba845f11d82d7dd6e866c12255017bedfe287d519dae0c9. 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/QZBRF1803072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79904114cfb1ceda9d35ad1830de97f49ef3a23fe31a7789cce29f3d999b7c67. 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/QZES61832570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ea39c9bbc6a5d2bc4db85f796dd1b653bf830679c1ce274215c5a828513811. Chain 2 (Bitcoin): anchored in block 958631 (2026-07-19T00:50:09Z), 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/QM24S1902082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x885d6da65ab831c66078f8b5f1dbfb62d4eef4311a58cc8a12eee26879b3b3f2. 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/QZDA81990906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d8b0244e7cb097f153ae8f65d1690566e3871db8e2b19c2968309a6c0c1331. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/GBKPL1948799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd45e2a3633943e049b5ef1370ee2d715ea012266f4ee8d1678166fa53cdb2ce. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:13:01Z), 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/GBKPL1953535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28de7686697f55a24968349746baddb16eaf470d352bf4e66d3d83f05f9f1521. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:00:08Z), 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/GBKPL2096778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07c297c6d58e1dcac1feddd3fd3b26872d0b811f41c527243190615b3f43caa3. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/GBKPL2096780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50bebe0e529c8db948ec5b59204e1b2d7f3c690c03d5444871116b4c80eb045d. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/GBKPL2096781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0347025728d21e43739d105835a5191548ee7a3aa6b8e0eaba2a7f2828dee593. 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/GBKPL2090384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x586761b8c3e114901b821ee6a0bdedb84fbaff048e7a5ff4ea635cd62a9ec3e2. 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/QZMER2088212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1185140f4099b3476a48d97fc65251b62dceaa2434395c3d565efc747cc04530. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZDA52105905.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ad2d6e975539021da579c0e703a2afee59922f871523a5028a6a345a2ad156. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:53:11Z), 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/QZES82125370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba27b4e6c81d2fe97a54e7db319f535a17193c78795e233d61f852a34223a73a. 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/TCAHU2446748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd122940e18fd080d6c19b7faf635ff1b5bbc059cb7ea61dc8200a4bea695197a. 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/TCAIR2471296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75c0d521f20483dbbf06c389485883e23bd3928040e5c14a3b4c17b223121108. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAIY2492058.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f7c4f5c44ff043f280ae816be174666804d95d118ddf567d9e964bde8f7350. 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/QZCE61892295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d5b779f230a204050db7aba08904ab280b8e769a043ee7a0b52abee97319f9. 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/FR6F31820880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c0876151f34130a5d6757f8f94c4015fcbb21493739a9066f1ea7ea8ae97d05. 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/ES8741903124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fd2beae4a7d0f9024166d7c462490132a3c8719656303c674e3bee590a98ddf. 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/GBLV61707547.