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 0x35da4a7703c2dd27117e876c5c7fc6e902cea516e94a6b4b8197175933adabf8. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/abcb26c6-ad62-4744-9d88-15b4642d4a9d.json and https://artists.proofprofile.net/proofs/artist/abcb26c6-ad62-4744-9d88-15b4642d4a9d.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 0x1ca737249454cc5ccbb3dd9f8a255556a960ae4a377cce464aee1d427a6177b7. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHNA1914983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c4f1d24a3a6708a1424b311f4245f512ea3821a55cccd56eea2a5125178861b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/QZK6H2016766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd59c48d50d4c8c764f803ceb93e2b30f69cd718412bcdec31a85ade00f92f66a. 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/QZK6H2080213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2109dfbf822f904d170ed9d8844f9fde17e3bfddd7c92a78862cc49886a7e4c7. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/QZK6H2080215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e39cd661c579a042163bfc2eb011b6d278d44d80b3d7a0f10ed0c542b225b88. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QZFYZ2191915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa92e3249eea03fc45ec7bc65479a24df89ae98b2dd267633626b9bcd918668ef. 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/QZRP42101049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa0016289dfd6283e8bb087e8cce790411bd2426bed42e4a045152a168cbbcf. 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/QZDA82223186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85626bf715f5163d81f22f1b4a63ae4085d8874cd7c291039965a07592a4c3b1. Chain 2 (Bitcoin): anchored in block 957796 (2026-07-13T03:24:42Z), 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/QZES72073767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d397a533ab5f855e7579e2a49e9cdbcad6eb6822589616860a3fd2b656f73d3. 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/QZNWT2196796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d812b3ac0adca2d799df9eddd5e42fb83111f8f2481db5e862c2463b14de95. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZDA82223187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e39cd661c579a042163bfc2eb011b6d278d44d80b3d7a0f10ed0c542b225b88. 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/QZFYZ2191915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75761273b5c2fa48e24dce91e1643962bfb7509e6a39fa9dda4dc915005739ff. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWT2080808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1804d8a5840b23bda93334022c00d7a459a0065a45d49279a72146bc0a0035a2. 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/QZES62059252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ec4fdd2dcbc3c2457c7a6f13a757fcae927f6861f35afc16c748d6ada64cb1. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T15:39:43Z), 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/QZHNA2240234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b973318d386bbdd9933cb490b93b8f88e12aa37d3d3e7315fab78ae3640cc6. 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/QZK6L2243831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b91471fb5503765ac5b4c51eaf725332c387fa39da1ca9f0b656068acec74c. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZNWR2261769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89afc187dfd8f569c215d28e1745dd6b3c526f6a46be6ef3490260039d44b987. 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/QZNWZ2266025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82c5862e7ad8cf6c0e6a4b3f6407d84016a392c6c35398fca456c61bce5861ec. Chain 2 (Bitcoin): anchored in block 958721 (2026-07-19T11:02:33Z), 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/QZTAS2289571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d9ccf5daae19d0861c05e08d4bc88502a84e48d10491d68afa5c53b6633df8a. 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/QZTAZ2276536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b91471fb5503765ac5b4c51eaf725332c387fa39da1ca9f0b656068acec74c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/QZNWR2261769.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d918c486d3bb8697bb32fcacf7a6b085c8282413375eb8605ee12d1155bb1a8. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:16Z), 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/QZTAZ2276538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b9877847f08faa80fb37a9b5be8b0d2ecf42e9ed0790a6eed29516438846920. Chain 2 (Bitcoin): anchored in block 959003 (2026-07-21T14:38:23Z), 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/QZTB62252200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedfa45fe5856673ff903624ebfd4a00ec44904d8cf1c42b8452aecf147fbd730. 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/QZTBB2214567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe7ae7c19d934b4aac1a41945c0b31eab6b2b618d7c28d78acf865001794cfd4. 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/QZES72360436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab7bab4445ffa70643fe31de4840eb2317d820ec68897bbe4d63766d312c5fd. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZHNB2368194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e2e32d995bed2000315a92689644103fc2886234a6ff0daa0d065f0b83192de. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZPLS2373626.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f2200b112b5336a2c28ecce35b203731effc179393aec59ec052cb3d56efae. Chain 2 (Bitcoin): anchored in block 957880 (2026-07-13T16:39:18Z), 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/QZNWW2344230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35295a3f612fe99fea1bc4ea40932550d21cccaaa41473c0cf0f6aae8de186f. 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/QZMEP2057582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12af0fc91f3ca12247076996eed780e6033dd16950822455bb3ed7176d0a0b36. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZES72271799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c90d9511bf06df1d469525a88929b85275d2f11a443cd8705656c17d82fc06d. Chain 2 (Bitcoin): anchored in block 959054 (2026-07-21T22:53:57Z), 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/QZES72355860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41ef0e5b7daafe3cdad951c9d9e9d60a4e36f9fd7faf39571706f3433181657b. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:42:48Z), 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/QZHN52395710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34ec4fdd2dcbc3c2457c7a6f13a757fcae927f6861f35afc16c748d6ada64cb1. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/QZHNA2240234.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d72565f8245bc4ba77aa86948746d00f9b0e69a4f1a526960f4508b9de6ed3c. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:26:41Z), 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/QZTBE2350734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99fedea889d83156760638aa6ebfa99e1df6b259c5ea3779dc565c8686a0630c. 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/QZTBE2350735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97ea41ef574a6e9169e4876dc8862757c7884627b3eb94015f6fe91c32f5669d. 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/QZTBE2350737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd194509f3fc9686a58f3b322a0b1be12d140609bf1556116a628585a764bcd4e. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T16:41:36Z), 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/QZTBE2350739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8377d2392b0bb07f077a3aee6f9bbca2319aa08e5d3ebccbf604d33a2e020d53. 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/QZTBE2350740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde560f1a0eab06023edc8fae8f85e2da6729dafc9eefbe1a286403c8f5fb49c2. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T19:10:28Z), 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/QZWFH2330783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcda9de24bc6f164715f51dcaad542e73ec33decade0739271f846edf1232136. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZPEW2435425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d75f7e4919e475408abf46a4d7fbcced647f53bdfa67ae368532c465cf6b3fa. 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/QZPEW2456538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe193bd5cc2c9cffbce518b52935e11517af3df7ecb62f6aa65ac105213327294. 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/QZWFH2413131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e6c3976cde120a6760c66ef190b0529c962beee7ddcf9bdbcd4309af6947b39. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/QZFZ22583387.