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 0x1666088fdbfbd969ca9551d9b113f5dc669efe5b88df7b5af3a11f576196da58. 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/df95e677-1620-4ae3-ad88-bfd8ee32606d.json and https://artists.proofprofile.net/proofs/artist/df95e677-1620-4ae3-ad88-bfd8ee32606d.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 0xd1f9c5c20d15385387549073888f83dc9a72724b53a41986fdeaecbb5a7e47fd. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/GBSMU2225293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e62eac1880f7e367ac1b5c44abce59f28f4c79d447fe0f5e317fd1777183d4. 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/GBSMU3197657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdebfe5cb2d2d7f745044d734906e03f393b8366c8d81d0e8620e342593f54076. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:17:37Z), 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/GBSMU2929593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4cb2e4bea5480d8b354cb12032127a33462839c8d9785c5afe988f23eb57d0c. 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/GBSMU3021445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x53049e601401ff54236b337c8940eb0d93d4aacec9040a1b3f97b917f8288400. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/GBSMU3436504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51cab5686d69d5ed7aa466ab9b14fa5ce08102fa3fd501c3b15e790e07f4dad. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/GBSMU4106360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24e62eac1880f7e367ac1b5c44abce59f28f4c79d447fe0f5e317fd1777183d4. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/GBSMU3197657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a7434630688ef68c3ad27f09c09d979ec114b7d61cd2e42859cc109849db438. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBSMU4106362.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec3fbedad92a9d86068f2ca3d44130ceda4e430fec4c359ca91e3a6bcc080af. 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/QZDA41916973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8e5fe8c6c6663f00b1d7a17dd8d80b83aba84e8eef0aff1a21a493550c816cd. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T07:20:32Z), 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/QZFZ71988054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e043dfd507754eb74f4968d51ec457031689f24cd6afd86c2331b0f4b909dd. 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/QZHN91919192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9210b584580c3c68ec455d586cfd8130fda49113d4b435054417eba0866adcbb. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:46:08Z), 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/QZHN91919193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x050cdcb5b8ce23a6d94eef6e7e683f33393879fb8455878b5111f9bad3c6084b. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:51:56Z), 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/QZHN91919194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f4a571f0440281c9c77b30d9bfb1d056a0ce3858f609218eaa6828ef5b13d7. 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/QZHN61931269.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc401b5038087ba3e02a8218c2195ede921ea951366b4a5e5bd95c97ec95b545d. 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/QZHN91919195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60eb8ee011eb34180fdaf36afca2eed537e8183d897aabbd503a282076c75c3e. 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/QZDA62034290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0e08916039c5730ca25e0e2c302167e7bb3864098c1afea629f16ad854d2660. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:41:20Z), 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/QZHZ32159888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bdd9987e9b75831ec38cd43aca3a9a6077a1953d24eed87e4821ac3815f7513. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:43:07Z), 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/QZHZ32159887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9e941dac4a587ee9e41fe81ddc5fbaddb6be73b2c71da4d679485ba6c468488. Chain 2 (Bitcoin): anchored in block 956383 (2026-07-02T18:11:59Z), 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/QZH232159890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a3a1dc67695860979ce96be0935caceff3a6c3b18e5721ac1f471b9d334fc0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/QZN882217341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9d1ab5d6f3530b81e52b23c23757c5187217389470f6379328f2faed831cf55. 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/QZN882222600.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e076a2d8971f387bc01bfc66fcf8db914c44cf2c3c55f11d063df4d0db78a81. 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/QZN882244745.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b69090404a8dadc2efe406e518ba87b30bb5295123ea53e535ca538dc50eedd. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/QZN882244746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05fe3a89eebe84cca34698bf38a7a1f24b90d8575eb4ef937b60124ff635cf98. 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/QZTB62214301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32b16871261ef0f6abe031e56c5d2235c1bd6ccb545308e2d69516749b9fcb1e. 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/QZFZ72317097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cbfd2fce4de784d3681b0ec405eb61da097b96fa40d073a5ad97da0fae5503a. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:45:20Z), 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/QZPLS2312844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0be9db242c411ca9a95f69b0520013c4585cdb9a0d2534b35d72f1556e77774a. 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/QZPLS2316783.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b2627fced7512d4fe267a0d851d6deac450d15e90fa615264a542eb0108fe1c. 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/QZPLS2316785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21a948b72c7d6222e12273499ef6b6387515f35b705bc0795101464ddd87d01a. 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/QZPLS2316786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda22ba03dfd12d6289254aa5fb3be76ba864c4feeec3c06ba0c03f9aeb0fd700. 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/QZHN82463364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc181ca09975414e27581def631fe52a7c55763cb67b71d293d7c734f2868629e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZWFJ2480481.