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 0xc5a9ce87229b64eb116f77538a5c13afc2b0c3751b2d8f86036f96c7b8cdbedd. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f099236d-3e6b-44b8-ac2b-4f28bfa405d6.json and https://artists.proofprofile.net/proofs/artist/f099236d-3e6b-44b8-ac2b-4f28bfa405d6.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 0x9584f8f915a0c8970da185ec5992c14ed0072693079b10545c3eaad731cddbd8. 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/QZK6P1944548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd41599d57063b365d2fb0e58dea219ac6bf4af5beb29e4a0f38a057832ee3d37. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZHN82090397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3102241b823a9f01b4fb8f3e1d72f195bee6f646f1aa4d30c9b7e31d19e2d592. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QZTAU2161010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa640b78900f6e5bccc6b6625c9bd649286ab65925f420f85653bf820bdbd633c. 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/QMDA62262383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb77a77aecfe034d7f05d59424826afecab11343492e4826f78722227ddb1f7c2. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:50:29Z), 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/GBKPL2208654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7622c8cddf8b3117f1499707f3ec666335ac849179f5155e7e98d63cc9c8eb7d. 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/QZHN62282565.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44064dd09188265d0dfd3ec7e602ffdc9098d70c55b6d2c96bb55f71b77d4467. 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/QMDA62262392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1a1e0914e13fafc3da992c946500bbea6069577e5930b180b7d082fd54e2349. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T11:47:29Z), 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/QM4TW2346819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd59eb288f34f82a97432ad16674aaa01b8a37a15dc26a26ae615bb6fdba8831. 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/QM6MZ2305564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8e04a40bf3d3bccfc63a5037b8907de86962e7ea194b12dd0cad21c0fa6027. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/QM6MZ2305559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74b4c36d0c630300d33af133650109aaf9fde3d145adf415208ed17e5480630d. 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/QZVEM2333212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e94cd0b3efe4f4e2b1d8acd2e6e61388e8ec98c2c5f40f19efef3bfe6cd148c. 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/QMFME2388337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d419e14f1b3dc507f49b28b7aea05a4cc40f1d01718ab2f8e0bddb268d6bbb8. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QMFME2349869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c6f36792628400972174d14b3524b65626515932b423962a9a5b8a5ec27449. 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/QM4TX2403618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c15483490199fe99ebdcbdf3d50d350553928fc7b3a014e85240917eca7a9d6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:10:48Z), 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/QM4TX2403689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43a6d2d22c7a25983b7e225ac34a2fed112922ba9fe20e7f77a417ef0a55ee7. 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/QM4TX2403734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0efc840b0c1b576753aff18a35f27dd3f1471ac624dd3b1022ca70b7b2e81f6f. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:05:42Z), 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/QM4TX2403821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fc6a17f5cd6f7076a0c5865890c52096fed1049d56ffc6afd9faaa8635b85b. 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/QM4TX2403859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e46a467dface103149913512e128ba976a6b7df359a59387a021baf315590ce. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/QM4TX2414047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x579362fade31b6726f55965f9aae6e6c3842428c537649d2e563196ff0706721. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:02:22Z), 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/QT2VB2420227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ebaba1c9bd87e61b346659108c7a6b625c8d4633fbb19a2325c24eb9bad5507. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T11:07:31Z), 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/QT2VB2465936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeca3f1e3a820079900e0fe3b3e2e263c5b031b02211637995ca7bd39e93437c. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZWDW2577125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x004bf5c368c031f85223a0d7ba9bd79d3e5da73cc16cd17012550a3330b80687. 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/QT4K42513875.