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 0x7c26581c3ffddf4491cb612dbdb5a81d9042de7c637f746f8e43b527a7684655. 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/d2f8d757-987c-4a9a-b92a-0011cb637e67.json and https://artists.proofprofile.net/proofs/artist/d2f8d757-987c-4a9a-b92a-0011cb637e67.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 0x82cc0166d23e95305f4a1af74f1ced519e6be4c91ee728892833e888ece15730. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZTAT2164081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbab45ff25b508bf7ad88e08e9f3a7b300ae50e31748b7868076b6e7f7ce873f. 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/TRBIY2200017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf3cc009b2ac0b876fba091780c0754bff576134db603b60295f926d26fa08da. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/TRBIY2200018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfbe8706bde2f3455aec885919980ecc1396246276c0b827a1f505849f7f6801. 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/TRBIY2200019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3c6a1099c9ce74a1a20e494617f4f07ed0d4f20ad5ffc959ca74ddc2b83749. 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/TRBIY2200020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650afec53b32ae00304580b156fa2c2ced226bc4c321cc958669524efdb41675. 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/TRBIY2200022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x878f6e21e38241f749b698a25a72babc490ce63d16a225170569a3134ade025f. 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/TRBIY2200023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc077e9f7b8ad27526cd3588251254c7e5535125167d4443f8f411b902bb87e1. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TRBIY2200024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x981ea912c33a3b24f12b4e4246836fc6f9ce88e9a872696479c43c8c70536657. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TRBIY2200025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd34a0b80c90e32ec9448dfe617a7a1740ddb4cbfda7ed0d80b139191cb759cee. 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/TRBIY2200060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2d9e09a510a4777a61349bfa107c6cb281969689029aae3c569943c82618c5. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:54:13Z), 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/QZHNB2203016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89cb7a1ec21cd2b010e6875abb8736b96c003835fac2bbeaf84285afb6b6baf7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:51:53Z), 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/QZTVM2220438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9712b50c170c7c58ea34b6590ac476d1bfc98fa676f4efd1e92ef63bfc80263c. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QZTVM2220477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b432184472f4b06eb1a387f884b01526fbe173f8d275901a4b9cb24c19e4582. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZTVM2220516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25e8e3166a031d87590f6f3a820611169ca417aca26fb739b9903ac0d0497c7b. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZTVM2262853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43bc078dd8a82df05820ef9359c4dc013fd527199d16e40b19d75f5b6bf0feaf. 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/TRBIY2300222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628f93569b44ed20aef1c7821160444969b400fe8859e63a2cb34da191c1d290. 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/TRBIY2300234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2725388a7921bfe320d9470900a7eba6cdf27c002312ee9e15f500b17bb0f8e5. 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/TRBIY2300245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4db2c809642859a73c3b7f572cf10733a25011418df12f5e07b9f5aaf58cdab5. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/TRBIY2300246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487aa67c2c361d5cfce5dcb08d59b36f80ce957941cf79eca8ba855d4a320b73. 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/TRBIY2300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x487aa67c2c361d5cfce5dcb08d59b36f80ce957941cf79eca8ba855d4a320b73. 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/TRBIY2300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46ddde0d340f89ef9f25865b5642d53830a067521efafc41b83ed8aab0842971. 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/TRBIY2300270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff3413e444f81c66ca202db5d84fd4b38b68d3787847666f77fe965647d49efd. 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/TRBIY2300272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73ae7745535bcd43c1af5a7a875378fb85e46f744908661809a121993690a5a6. 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/TRBIY2300275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68e6ead6382383b03eada7ccf121c6dc6d207bef42be6c7379c92e5c0f7e6c19. 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/QZ5AB2464000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595084feb271340fcca17c240bbd28f0c985efa167eb9388e6f8bb40602fd7ef. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/QZMZ92422915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc7f827f17132f2b55ee4e1f1bf16159138ca4030e042c7c0c337407f7534395. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZNJV2424633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595084feb271340fcca17c240bbd28f0c985efa167eb9388e6f8bb40602fd7ef. 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/QZMZ92422915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46302a430e8cede29289baca05c09bf937f662763ea7d10f0c504d2e7f982110. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QMFME2378084.