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 0x1c4819ecd2adfe40ebadfae8e258f62102b979937075f35cf643262546104fad. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/564a60c0-d9d2-4013-a588-29d8ed5358a4.json and https://artists.proofprofile.net/proofs/artist/564a60c0-d9d2-4013-a588-29d8ed5358a4.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 0xd76eb178b00e86338b84957a6af609a3743889142a593552f82a725252e5231b. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:23:42Z), 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/QZMZ92374314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6cdcaac37e28c92bd3fbdf881735c9a056b7481651a95ac486dabfb91755a0. 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/QZNJX2348355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa98dc33a20905fd46dd8826002ff9e222d5b610c620ebdf936310ae0f7233f9b. 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/QZNJX2345591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3e9b7621dbb5975b67716a2293c188a7db97db5e83c3fa21b78eb9db5a103d6. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:07:43Z), 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/QZNJX2372922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaaf901014fff07f07d075b63862f74d7a2fb49a4dc4f174ffa06d975cb2dd853. 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/QZNJZ2389191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x436900f50ef8ee5a2e3696ca96e5161b73bf28c12c99b76b6b93fc26843ca2ff. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-17T03:11:21Z), 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/QZNJZ2389209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e429c3388e2069bad5327562daa9cb2e87181456dbefe4346974e42aac9e2dc. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/QZNJZ2389192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca8e734fac5af37e2b3f19692001b2530945dd16ae124bd33f3404aa98a8e471. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/QZTB32372390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28022326766c5a8c16b78a7f3958d870f85e146d0840f06f513f493ffe5f0ef1. 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/QZTB32372391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2263f9a005ea1ae431a6a80a83d57adc54aacf2a19dfb089233a99a1b757dde. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:22:55Z), 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/QZGLM2557298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x770196233b2a428f16a3ac68249f539d2cd4c076575a2c84f1b083e237e51070. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:35Z), 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/QZGLM2557299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x256283a1c1984c71d274fcbb10ae3847efd58276efc59e2041f713b8f605be8b. 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/QZGLM2557300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca252854fbe46370b55bbab2a9694860f5aac65a8850de4df644dbbf842c88f. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:00:14Z), 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/QZGLM2597995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52844128ff5149bb2a72499bbeaae99757f446acded18ef58a7521d435e17702. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T02:23:55Z), 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/QZGLM2597996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20d8be4db1f4a6c267ddc3c4a725bcc0fd87bb3b7c33206f9f2cbb7f6df1465e. 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/QZGLM2597997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x135e14079737a7572ff3719700db618f67d796d686542fdcf90e39c91b6dbeb3. 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/QZGLM2597998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x279a0768078cf64eacc852f4f37977b9d29c63fb2acfc590f47c222b9f8f0310. 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/QZGLM2597999.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfabea4bf2f8f327110e78f32afa1d21592837a00d1371650fa684cd13997cf11. 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/QZGLM2598000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c21796616ed5286e98ac87c67bf2ace31fc16b9490381ca9cc0c1e9168f52c7. 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/QZGLM2598001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x002cefdad033de50d9e1938e4efa14c96bace47a912772c0017244b495a84fa8. 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/QZGLM2598002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66aa3e2f18e7e0581abccece4e3044e3b6c8d68e2fa07097d4b6112b27f4b482. 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/QZGLM2598003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a670c97fb5bccad21e249a51a59a64f85d41909fe89bfdeb5639e2b21295142. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/QZGLM2598004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59a9f5f2e7a62c025eca1ddd2182e02ae6a4825c91013d46e3e6370529173f56. 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/QZGLM2598005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc9a15594123d5e2063dc0250cc8db3bc41e24a5f6c49a4b5a5aad9a0fae0700. Chain 2 (Bitcoin): anchored in block 958392 (2026-07-17T09:46:31Z), 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/QZGLM2598006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89d65b92a3f7b11cf38dd6216766ff4ffdc0f49a6e095e94d94ec4743ad6abc4. 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/QZGLM2598007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9075c0a6ba20c2e2df5cf424259bf68cb1e7063070463f1d505b91ebf0a28b5c. Chain 2 (Bitcoin): anchored in block 957884 (2026-07-13T16:55:06Z), 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/QZGLM2598008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2d862607cba04a0b5628e3078cd093420b3e32dcfeb130cb7b4a8f8631ed307. 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/QZGLM2598009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6211bcba69d3ae0bf5500f848a5c494a24a6a410d6074cc8541e0ab7cb253d1. 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/QZGLS2547768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5a2471d9d6a2facd0a481ecb0b5210c8839fb5ebf5557555a35189c36a0e55d. Chain 2 (Bitcoin): anchored in block 958612 (2026-07-18T21:29:37Z), 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/QZTPX2599893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90ae0541a6b1f52fa3723d1e21140410b2c149039ac1e86c9376e805b3036276. 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/QZTPX2599894.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3043d0896a5dcf2b58931f75f406b4841e5a79ee48ee1ae649269ad79afa2251. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:08:16Z), 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/QZTPX2599895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x168c7653d44d7525d818d112d7d840418e6b185f222c10ea0771fed3d5cfe2ff. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:10Z), 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/QZTPX2599897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4927e62096efa89cf4977a6f3d55daa034a1b70ec5f59f4ed31ad6bb405c0d39. 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/QZTPX2599899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5bc45e9e9ae82986b225fdfcb415193dd14c1db669bd6f73cdc12e227406004. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:36:20Z), 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/QZTPX2599900.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dec4916a3874c34533f8af5bfca471f6f358dd190060c7e331ee0f12c358242. 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/QZTPX2599902.