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 0x49a04d4a20b131db46d2818dadb0e48f8ddf354754206ce690728e4dcd5305d9. 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/458eb27c-9aa5-40d5-bf3a-93ee3edcc6ee.json and https://artists.proofprofile.net/proofs/artist/458eb27c-9aa5-40d5-bf3a-93ee3edcc6ee.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 0x467eab400cc61668055591adc4b7eef28d5bdfec63c2d5dbdb07d4a0dbc724f4. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:21:19Z), 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/QZHZ42125490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f0baf0de219dffef2112de7e11992027edd5afab4f014684cc53d0d29c8d2bb. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZHZ42125516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd72904b2123a01f4abcd3f1c5252c28abf9ffa989c80c0ee23b3f3d9421e4645. 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/QZGLM2369454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe766d92b3149837a8d4538763cc33ae6e773c44c8f0e6309179e96a557043be. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/QZGLM2369455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5dcbc77bc62b023b03975a2da99c84a65c65a892e4993edb7671e703e07ce9. 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/QZGLM2369456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8577f5b0cd0cb921021ad2d88f1576f14baee94aebdd60899b54cb39b2bdde40. 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/QZGLM2369458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f53cfa9e9c5ee322c79c3cd982eefda6cc3af7cdfd3e4cf19f79dd0c7535d91. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-17T00:46:05Z), 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/QZGLM2369459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0193b06b1515392005c817e711a240d88bf8cfd03f6cf5d8ee34743b626e5d12. 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/QZ5AB2471662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62bf2d8782ab8eb111ab4be5685d52dce349b3032df1912533fdf34f791c0592. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:52:00Z), 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/QZ5AB2471665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf40d46fefda979f77d171fcd6e595a4640c780e85f73a991a7d03ca11a01824. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZ5AB2471668.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc51655a4d0360b34265aa73ed21b45739e7fb144be4906e57a20530c9f56ad01. 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/QZ5AB2471669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b3fd8bdbe7b277d6d5537766ea2eed43eb5651fcba1a42c1e4db4ee40256b30. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T00:09:24Z), 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/QZ5AB2471670.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa57c2ae387afa984507458eeeea6a4d6d2733906f8d7719c9b1ec2df683b06. 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/QZ5AB2471671.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1b2cfeaa29738cad2882b6759d3ab6e9e6dbcc4622a120407870a4fd0c6e2a4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/QZ5AB2471673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8249a9ecfec10ed05aa3fd3fce8c4b44c1dbd71482f623cc3ae567ad042abd. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:58:49Z), 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/QZ5AB2471674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbc74a6daff31ea5417fb31ac3df8287ec2f6503a98baca7894350ea855d78b1. 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/QZ5AB2471675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8665d08ee2b6685d8d1db8fcc3a96a8e2fa89da2cad11126e75d5217a1433533. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:18:55Z), 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/QZMZ92415493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95fdbc84d8f359e256f1f46ee3eaa593b3093aa63388147d221a1adb5527559c. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZMZ92415455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf9bd128aaa381bade3a39a8f9b3683e27b3a7dc8dc5cac89e6743b011dc3331. Chain 2 (Bitcoin): anchored in block 958531 (2026-07-18T09:39:18Z), 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/QZMZ92415415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x100a9c74c7608b920de167cdc56084471404e6271f7f0f28e52f829bf91e0666. 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/QZNJZ2440092.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4487664dac7ff96a84eeecbd1027756c31edaa93ce0782cd73ffe76917527a13. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:53:41Z), 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/BK5VL2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7eff79b8c12f3efdb83d30e7ba2a00723d564503f3f7e05203d93e7c4ba80ad. 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/BK5VL2400013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65fa856ed59bb6cc9b7e0528667d63c82b9136daf11827ac8ecf6b2de86ca472. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:55:49Z), 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/BK5VL2500003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae20dfd3d6a4c46e0d1350cef646ccc525b3b9d7f3a3199e04f9860fb31ac323. 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/BK5VL2500014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cfa6ecddb1d7dbb40f63b1e415fd9007a745e240a10bc48dd1768276506463. 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/BK5VL2500008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790c927e9648209ac0029894257afcbec0af0331f61f8c83e186944f0790ed0e. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BK5VL2500006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabde96ffda782b1ac94587d6f40f357308fef8a495ec11454effc74e2b0cb403. 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/BK5VL2500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb2569779d5cd40a11fa33c138c9ef9bf383d7e6d974a8ace0ca39b4576cda9. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/BK5VL2500017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb37192c4f544e4268c1723b8a2a81b353a76dfe57389dd7e891962cdb6d9c81. 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/BK5VL2500010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61354eb95f1b83de1c07547e4de9c7a9b40a7b362527f56d2941de15e74248f6. 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/BK5VL2500013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72625b7fbf1ed26a24b7f5b90bc755c0d54318400f3c1ad0894ae550c133dac5. 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/BK5VL2500005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eabcc3d8d1a6b11fe33a6793c84b5c0fbc0a132d92c83f3cd7bfcc07938f317. 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/BK5VL2500018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae5447aa29ee0b5b31a546ba2cc7818086fea67ea1ff7e9f4e9fa328b647d56. 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/BK5VL2500028.