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 0x19bb5581ce799f6eba6e5149e15b64163562eb9ce9ad0287b0b25cdfb0c0ba0f. 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/8c43298a-3d6b-4f9d-86b7-7cbdbedceedc.json and https://artists.proofprofile.net/proofs/artist/8c43298a-3d6b-4f9d-86b7-7cbdbedceedc.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 0xb5187b0417aa9c438b6151ace79962c17bae6d1537bd4f8eb1f690fd866b3b9c. 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/SE66N2209793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x887838d491ede2b4dbaddf5b84c8add6be1314b9bcec84f8f13d5168cf1fa9eb. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/SE66N2209794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb608aec044a9d0afb2658d7b53bb5342342a2b090d6c474023659c80e99601. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:08:41Z), 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/SE66N2209795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0345d5229fe8bf82db2e1faf6ae219a9bb447b8eb41f9832854665ba593b9bc7. 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/SE66N2209796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4e778cb2bd8a738da517309c9ac9e3211a36535df31c157fc64ce55a646194. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/SE66N2209797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f36180205c15900e6954d6973be76f9b6ae228f6610a7ded450e3d1c27683c5. 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/SE66N2209798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd63ac444471a7bbd899159db82fd0462d75331b19924ffdd2c28a066fcd8f00b. 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/SE66N2209799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd79c52ae8fcdc3b733076ec16cf0b0dbda44adb48f1d3d561709303a6f83a61d. 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/SE66N2209800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef3037eb04bf98c884844b8887518e2aae59835a51c42d6a34d73832aab2daa. 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/SE66N2209801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eb77fea1a86409435505cc056ee8fed1f50f41e9f2606b628b92ddf21825963. 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/SE66N2209802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaeeef317360a5b1f5787075f69c725c0eaa40c499e0944d52d47ebc8e626142b. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/SE66N2209803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x710fd87cb4b341e245ed501dfcd358e8c208f053681e782a3e72aa40184a4199. 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/SE66N2209804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a3236a5263c513ecd0c4e7b434bf6ad9cee4803cf46726b119decf6f9e71bd. 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/SE66N2209805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd8d32ecd84d25da4741f0954f66939659b14a964f313a3cc2936e9f49579417. 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/SE66N2209806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb54aab298fe97d96bfa667a00870919e9e822028ce65d1047822b2eb0b5a0cab. 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/SE66N2209807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa388a6fb0ce80ef335bd79880912e6196b731cc1cbd2023d7ff530687195881b. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SE66N2209808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb59e555e3b229d99f503186921a4af50ede82ddbb536264c15b77f6f1fde231a. 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/SE66N2209809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e6bb94689da021a4ee509071cbdb5dea1cf0dc5106cf343be9f469bcc66f9e0. 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/SE66N2209810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ed2e140c216322edb48f5fe6bf7232843efddd49106a982e75a9084e660c6a. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:10:32Z), 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/SE66N2218361.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19e44bab2217d4e634b9a999e6c0c8628b9a51ea6225d3fdf2d8b27ff0663ccc. 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/SE66N2218362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfad3bbad4bba99f47c34c39fd7d2194c3abd905dfab73a2ffe79b1d814097f62. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SE66N2218363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x980feef0d9f8478a1b85489bb37f9f084e866a7fc4e8b5a4390fa22cda7f0c2b. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:59:22Z), 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/SE66N2218364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2340c105b2b5e7cb1699d921c3a04b252899543f8d0b32f28892d71498cabed3. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/SE66N2218365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b93a43a9ce32e1eb8c643be9ba49f1d5413bf509cbf6b8114813303836aabbc. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/SE66N2218366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e38a5f3f2b20c12afc7ec9856fa7d8b98cb0e0ca215ce0aaeffd3932843aa98. 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/SE66N2218367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3602ddf1966b4685cb0fa52e32cbe75c4c67eada20dcb3fabd98d302c0da3ba4. 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/SE66N2218368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf99128a9a80f03eb40df3b1c5b2a383a7a7453fdb31a0fc39f12cbd0b10e9e07. 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/SE66N2218369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1d5185d21a6d66d7afe45f1523db966502ff3d11735f93875d9b8e66c18ec8. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:52:03Z), 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/SE66N2218370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06c9c99259f2101febbe61404860fc9563cf19510ba30f23148f7559fdaf5320. 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/SE66N2218371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x108dc6980acbe8fc5906f1940a2c8ce61878b78930845d58451d6ee406b805f9. 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/SE66N2218372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf648c2307891d6420ec9ee1da438962ed3a471a0721519e32eaabca9d205cc6c. 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/SE66N2218373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5accd4bd1ae35730d017fb562f773b1b37ceb7cadf944991053c3af5ecb9bd28. 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/SE66N2218374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6c52bf4268dff6c9941c084cddc2dd2ddf497fe3a0ce42427387b26f4bc7c10. 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/SE66N2218375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe1e1420bf5f5f7c300cc96f6614db297befd321d116d5aee4cf54b640479e3a. 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/SE66N2218376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe41ac07ff51c387c1ce59283c86079597ed48cc466df505c533982b80e81042f. 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/SE66N2218377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a1a5d67d3a82effb0c3060ae47e41e46a41e5b78d281a506fb201faa944be7. 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/SE66N2218378.