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 0xe6882ef674c2a95c0a06114918d34147c6dffe7d9964b630b452a03a8fcdfae6. 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/03d04859-e829-4c7a-9c62-651f264c535d.json and https://artists.proofprofile.net/proofs/artist/03d04859-e829-4c7a-9c62-651f264c535d.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 0x98e37100b570f85e945d1dde17b6f520191097e4ac87d7ad448f1b775cd90b6f. 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/QZTB82368335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9e3628fa5442a67842966bbfdbf7a6323b585897fef6f171dedf331bfeaa2c. 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/QZK6K2483164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66996f40c35b312ad0492ccb3f7955b8679ed25a56380a2c5339158a4c6d9d1e. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T14:59:15Z), 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/TCAII2418781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb09bf83086373fb3671a83bcd50efe97947d101cbb9aac9a9921c6b4de4c4061. 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/QZMER2433676.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6de2369f94adf8deeaff982ebb48579a0447b55e1ff14fc430ce0869f9091ee6. 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/TCAIF2452397.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fb6d7ea825d8129b646ae28f899705c732798df7d8bdfa17f28d0274312d890. 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/TCAIR2414753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa100992487362c57ebfabb2370c01d593866c754809874d17bf1c842e1531912. 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/TCAIJ2452480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x564a19f9418f0205d6da4ff0601e40b1ce0a5eb80dd0def5f0bb1778720028c6. 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/QZK6F2401616.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bcdd81cf037dc728efc92b5de5ab7f06840f8d13edf67690f076e6f7ffd0c1. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QZWFJ2482821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9407581ff3923bb7f2bec3d85efb2e4488767ec3afe62a7a4613b169fe791611. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:26:19Z), 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/QZNWY2419775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6456f7f34c20cc819a1342d558c77513f9327adf36701a275ca45f83362dcc06. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:58:23Z), 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/QZWFT2443705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fc96dea1cff3082596dac0ad480cd0158a13a9967a83db201bc3364cbfae4b. 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/QZNWS2433325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72034a96a7af93019bcd16605f07048279a8a297fff9d8fee95ee79d22a780fb. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/TCAII2453610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb925736fb3488497e971fe1a2ce6964e4ec2689296e9faababf5ee17c459e972. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T01:18:40Z), 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/QZZ7K2457802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2da3d5497f907bd8065a5fda53fda2b93b0a3558ae344da10c5c0add86c6a64. 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/QZNWV2471392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12fa5be110e4c53629ef970bf5150991509041abafa61b0a93db219e00c737e0. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCAJE2557730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d690af1006dedc5ba39782d011945e346937f5a737276a7a94522f4e2d7f532. 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/TCAIL2455867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8325dd449c13014c94e769a2c1fabe660a6dab23c51a56946b5b2952d5920302. 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/QZNWZ2424496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7e21314731eb6ab162fd7a932e8b1ac671e4de04cfb756dfa835baea9d4228. 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/TCAJA2458215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0fc9db090749d52d1234a1ef405980b43c6cebde3ebab8db8b2ff0377b325a1. 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/QZMEQ2494696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x983a645eeb61d7c0a65ddc4ba97a761df3f52a41a57516361d1d10b114cda27b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/QZZ7P2425186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d6a3c2e9f7ddaa8d3432db82aad37d8cdfba735101b71ce72939dae54e6c2de. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:04:30Z), 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/TCAJA2458450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68f7ed22ce1b2418bcfc139874f07cc55e4fdd319a7723da2867935b3fb5fcda. 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/TCAJI2502957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e8207f3ad09ac1aafc7ad738e70f74310dc760070adce6056b35f4eea1ee7b. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/TCAJI2503809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x077b2baea028c4c7fe7b613569c7f004f7d38ddcf46737b57b0b92583be8d99f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/QZES92575804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85ceb0047337831a3f3822aa8b9445b6e61d4bc846e14559618d703dd69ff447. Chain 2 (Bitcoin): anchored in block 958788 (2026-07-19T22:07:06Z), 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/TCAJI2504443.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022a7b3ae74c4cf27654052c59572b3f8aac6e7517fd68e5c1d5f056dbf4cb80. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/TCAJI2505165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f275cd0fe12ab1d99b490709e64077ace42dd328b5380b5f70343750017480d. 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/TCAJN2574875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf57de627f7eae9103187a388607adc11ee76b6040e84bee13883f4def7e55af2. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZNWU2538245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb649d0fe99cdf9f84fa0e4b04fd77c2a8b35b9b494fa10e2224f3fb985ea0d38. 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/TCAJO2588291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb745177a60dd273fd61a8e288cff44c6eea847b21e9b562ef1f3dc1c9898534. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZNWZ2546414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddc52246f5e72299f87d79d128231abbec6821309b783ef9d94a6277f340cdb. 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/QZTB32501012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x116c452adaecbd13f7346eb5c848ad7883f6481c5f797e94b3dd25c152b68009. 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/QZTAW2583262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9637010594a2f1a462331e0e84a29959344be9d35fc18001df48900215a34f64. 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/QZWFW2562412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4916ddd45b21136b7af9b3ae195413516b166c0fc5d3b2b68e8846c2fe5b207c. 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/QZZ772502057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc05773ab81a9b1057d7b906545e610ed2e9c2917a3ce610ee6e6e41058c27213. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:04:26Z), 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/TCAKA2524980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4268f4a8d9c36bb154bbc70c653b4c6087e53a103750efc089f327723d59d363. 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/QZZ7Q2595202.