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 0x0e91fa2410ac98dbd12aa77e20ece1550689b0722f7d11a7471807860eb7d9be. 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/c6449245-f29a-477f-af12-4c181956b381.json and https://artists.proofprofile.net/proofs/artist/c6449245-f29a-477f-af12-4c181956b381.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 0xd8e68005f48ff21329e89844d8a3d5f8a6559820101066d9131661e3cb5ed5e4. 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/IDA601800761.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ee3fbf3198321679fe996be223dd1839931746bdb91431818cd3ba9b8f968e. Chain 2 (Bitcoin): anchored in block 958325 (2026-07-16T23:46:08Z), 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/FR59R1931417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea91fa06a382b28dd4c52cd577b69fe8a74da80368eacd42719aa6a4cebbdf8c. 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/FR59R1931418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b86754aee056e17b68d5d9dc96e82fb657033db29c8bc129a3e2028c7ff3bc. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/FR96X1909197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3253485d1d9cbcc103ab1d0b8dd7889368126b52804fdd06dc7273c7b1e409d. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/FR96X1989503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfd4abde0691e9de83cf5b2c57a3d0a4bdc75c2cb3124971780d2a13e9c24e8f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T12:24:09Z), 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/IDA601901024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8cd630b0af024b32696de22690a0036b70d7ce0abf39a281e47c2aed00f99f. 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/FRX762071816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5792b9836a1c6f8d7b3190c5792cd2929cb2e7cc054c5682e9c07675a0586c05. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T05:06:49Z), 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/IDA601901199.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431296523963aa05098918664be637f7f296d78ea6a288746bd452a4c8f7aea7. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:33:22Z), 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/IDA601901249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cc7166f4c2e5761db3fd4016572e408d6d54a16a8e168ab2c7192e8957d46f4. 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/FRX452172593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb43b6a4d1c939dcb3314497f5c62a9ff7f097bc9aafd173da7ba912d7e53621. 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/FRX452172594.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x628d7f882523db8485d9009400c4094de7bf50fc532630ddb200f0f65336aa25. 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/FRX202224893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5b1e300dfdefa66d0e30675c84bd9aca1d716d26c443b089b69192af492598. 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/DGA072366013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddd823bef835a2f1439c43c6485de8021b7c105a252fee9dc64674b3680bd46d. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:59:43Z), 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/DGA092335230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x225892fafeabe9ee99f3f5994aaf1324ac05cd949880959de69b1b66fc73182c. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/DGA0M2321498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84cc6cf022fee54b015b1ad4ab5198c72dae33620be20a413d02b600d0116902. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:04:08Z), 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/FR10S2462145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc91ac430b118ece35bbeedbffb9499846d9953f177635b8e0c39cffd460ec72e. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/FR59R2421112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655ed249f16d1be9d7b7008acfde1f836910c3f53a09fe6f15b2f892adcd5954. 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/FRX872495937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dca7b7ea21b77246bd383ae500e952763d244fbd2c2f483f22e35cb68dfb455. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T09:47:57Z), 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/DGA052494125.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe7597cb03ac7d5d455910b2ca6727bb06e77de35a02e0e7806532b0fecdef65. 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/DGA072425234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a05a3beb67c09e0fe952724b2879c00972f02856b1f551e3e6d36f387c4caba. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:33:56Z), 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/DGA082446275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3084cd1294ea6443fd2530bda32392e91ba3b26c5e1fcf343b204c0583d3a515. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/GXD7V2493410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3900928242bfe81d3623f5105e46f0953afd673540d5fab9c6b21001b102a7c6. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/IDB772108034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f21aa30e4f233626018bb272eccf5a7cbfe59ddfe2dcd56b3648e6ecdbcca52. Chain 2 (Bitcoin): anchored in block 958582 (2026-07-18T16:47:25Z), 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/IDB772108254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7c7f2c910d25c78a16831cb9ee2b5fe2192c89216112ec7a7d08b0083642ad1. 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/IDB772109263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x638dec41623cb9b32c28d19f7182c529b68e7453fa207fdb9ed373d28c4dbf34. Chain 2 (Bitcoin): anchored in block 958422 (2026-07-17T13:35:31Z), 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/IDB772109407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06151bc4fd4616dd032870886a0052e5358d9f943d1861042afab7a3e05785f2. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/IDB772109888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25a527fa7db27b2f1e86b6018e4e975449660dc6a41e21849fbeb841ba2e934d. 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/IDB772110015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4cf6edb0f9fcc2b550ca58ba2e07c9921e4833ff6da4e123be9238d774c5dc3. 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/IDB772110635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1203e4d8dee4cd34825532f03c33b51b36fdf821a060d45b47a128259c985841. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:18:42Z), 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/IDB772110839.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x405ff49333b02a427a55411c63f040e1da335c2b8024844154f239d4140972b0. 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/IDB772111031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65cce3fc043863b6eb1515e6dc820482aeaa7d161409eb4ce19c70f499abb3e0. Chain 2 (Bitcoin): anchored in block 959015 (2026-07-21T16:25:44Z), 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/IDB772111867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e7db9a36e39c8976b2d1494eac3cdfedf452605d25bd33e9df99e261a2e2c1e. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/IDB772112625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52d137bd67554b9c78cac05ca6eab07aad91b0ac314fa0087b65be895136ede3. 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/IDB772112705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca70f3a524934001a3bee5820126b584525f2776b8033f6e33d01889a6fd57d3. 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/IDB772113412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa49b3b48741dbbe5169266882c5ef2166e0f3bf2d7f4ab315cf0c5db531ec26d. Chain 2 (Bitcoin): anchored in block 957785 (2026-07-13T01:55:31Z), 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/IDB772114223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1202f0d9fa077612627008bfb16c061d4c0753701c359b14f03da90405b9ae48. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/IDB772115624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d71e4524927ddb00bacd9caf49be3dbc30095de7d65214eaf31cc869363e0df. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QT5M42535978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2049a925e5b7d637273d98b879d7b0c57fc29ffaf65fb5ca06be023568b6a71b. 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/QT5M62516926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c40b65a97af77905aab207f2bd1040141512a0913170a4b13db2192cc8488f. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:58:21Z), 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/QT5M62537868.