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 0xe1584a028b719b0c88ba489bca787b8c9b0d1ff3eb0717155f77b0b958635f0e. 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/52e0675c-7f23-47ab-b9f8-ba93e6506d53.json and https://artists.proofprofile.net/proofs/artist/52e0675c-7f23-47ab-b9f8-ba93e6506d53.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 0x54aa5e165e09b3bbf62fe5f35723f0755031ed583b51a52a1128df9316599408. 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/MXD941801503.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3b61f8e33dd508edd5e24be02e9d56bbdd3dca23118c78a72599a71a8f872f. 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/ES5087808632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfb380b353de199c21454aaa471726164030d506cee225eefdb64977827fdd87. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5088002690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfafd5e5605ab22b3dd021387e6c8947f77e7f7ffc8cbed7ad48504003ce8bb70. 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/ES5088002691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x44ca35b21ad2ec61d49c513267d6d8a72af5cd5faa8e1651d2c5c0d24cb36125. 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/ES5088002692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1b7b03ddbb03b8c262458c9a1c49d838099436e1fbd29d7a0dc762ffe4ff7bc. 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/ES5088002696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2df292c8a033249deffc14b0a0fd9e2620adbcb4117159e6733cc77ced7fba8d. 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/ES5088002698.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e78cc64eebbd06fbd3552c075d8126774fe5a633012e8b920e2f0de9f6b3e3. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:22:50Z), 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/ES5081200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3481a437d74d9c39cb702624953aeb78ca50b8254fb6e973737cf0a569667c17. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:41:03Z), 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/ES5081200091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08418a43046721271b15b2e751e025ac8a5a401f1cb19e8d499593fd4f41cdf8. 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/ES5081200093.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37af11370fe1c5134e02a5ef76ff891528e25355886a4b6810630c84e597625e. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:56:30Z), 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/ES5081200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0889e3e980ee01aca229860353f8042643a5e5a9d47bc59f86f10057d519e3a. 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/ES5081200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23db97f015e94642925567c57b7859da75db152e8fa9ba9a446c10c09f6460b6. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-20T01:37:37Z), 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/ES5087908628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9171810541b7926995dcb1e0285a7c6e2d55a27d4a0510cd13bd2c2ebba8b6a6. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ES5081200110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdf8c2a19ef7969235938c71f8987794f934c8f62e8ebc3935dae5ffa3dd3ded. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/ES5081100528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd450cc3b0c895a147a72b11160ad3ad73823f682dc9507569133e3ad077ea617. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/ES5087908636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73af2fc139609a0953c1cbf42c72c575cf065c0e5f16493cd4c2f5c7b13b9680. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:04:18Z), 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/ES5081100497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83e5b20babfbddc2d4531801c518ae9770e3decb2583344298e4df126e53462. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/ES5081200100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6095800c9e54c72ea78d2817706b3198584130fea6a32a2a20e91014eb2f1128. 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/ES5081200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f488cafb376605118e33a88bccc696d910fe927fc8562276e111b1916e476ea. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ES5081200104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a1165dbc57c610e57bd25824131ae1a54af3ad881e12512a075e91dedf17a1. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/ES5081100495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa3b61f8e33dd508edd5e24be02e9d56bbdd3dca23118c78a72599a71a8f872f. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/ES5087808632.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3e78cc64eebbd06fbd3552c075d8126774fe5a633012e8b920e2f0de9f6b3e3. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/ES5081200086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52a88d848d483f226575bbe880f896559a8a39e4143c74732065daf20e491e77. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/ES5088208626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc132a2a24f91298bcefcf65b917f766dc8ba31df0388362699dba1eca38aa90. 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/ES5088102288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b9027c65b1d8f6fc11f42044030b5d058507189f48616ec70b6e3d422c3cab. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/ES5088102704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce16e576315ac7ec6e766ade612c351938d85370e12841de81b14da032a3284f. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:28:49Z), 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/ES5088102706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x857260547c682a3e3c6d3555e794f2769b75eb0de7cbe63ad25d37596f30893e. 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/ES5088102709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbceacd6d9844bcedd837518a13cff0302a0859dbeb4588606dfeeb34505229c9. 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/ES5088102712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d12d137aaf7dc884c21817db1a13f318c895141be53fd22ac5e5d37828f75b9. 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/ES5081200113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8209969860d6ad354c21f2a6a39cd799ab41975c6b7d368f73900b5471ec1800. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:02:54Z), 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/ES5088102705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6095800c9e54c72ea78d2817706b3198584130fea6a32a2a20e91014eb2f1128. Chain 2 (Bitcoin): anchored in block 957603 (2026-07-11T20:26:17Z), 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/ES5081200101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83a0e99dc4384936dc0fff71fabcde8c608f22c9bbfefe358cb5962dc45a3455. 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/QMFME1591431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc735ffd4e3f77e3bab3a2e2ac1a2c3f486bbc03090fc59a945641149cc0e8443. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/QMFME1591434.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b4b14f8fe65e76f6af4f3b11d4818fe5b2593e9ca9c6e090b3ab3483dd65fe. 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/QMFME1591438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4627e0e15f94845cb7ecaeb789f77067e392c95bdae999321b863b652a6c8ff6. 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/QMFME1591439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f74485a563e5d284e3d6759371df9130620c9161dde28fdd79694d357af47f6. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QMFME1591441.