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 0x4d12d302897bc736ca31cf8fadf3c1508fa75c245ad2ce75eee4e334b42fa969. 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/464cbd85-7971-4870-b23b-1e710602d4a6.json and https://artists.proofprofile.net/proofs/artist/464cbd85-7971-4870-b23b-1e710602d4a6.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 0xe40da4b11e833758ac79b4da27affb2d08a441036d91b5492b93057a725d3332. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:38Z), 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/QZHZ32031674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb83ebb010388bbba6a34d10e99a9c4c9555677f4c919759b08c42751543689f4. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:01:18Z), 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/QZHZ32031678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb9300448d930605d34193dd5117dadc09611b8ae79bf6c6a69f26de2a6afb0. 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/QZHZ32031679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41c7d418fd6231462f4f6d792a044263ef928df40ceb060d753895307a515e6a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZHZ32031680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdb13559ef49104fed79c4d6689193cb4279e5d7fed3736acc167e80c858854e. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-20T01:38:42Z), 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/QZHZ32031684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d5acef94cb72d67e7bda7441d5bb46a4b73233ee0c41a0a9b6fe936f6f39104. 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/QZHZ32031685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2dbaa69bd515a30c7942b1ac3838734d73fdbb65204d972a282ee24c13bf918. 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/QZHZ32031686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aafcd42242bd36e2fe496868bc47941bebb3d8d9669c272d247743e5b4bd255. 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/QZHZ32031687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc055272cbafb63d80abd746ba339e1615aedee27a95341417b953931d421a5c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHZ32031689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd874e8d00b674e44db4211630f0690699d655d43d164b748ba5035998baac3a4. 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/QZHZ32031691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c760990476bbe292c8a2930a867b43ecec047ed00a4a5d5c9893cb49330d55d. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-20T00:06:16Z), 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/QZHZ32031692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cf1f530fb66ed72d01c9e1d66fa873ab77cfddba97c77b523e7bfc04d7706f7. 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/QZHZ32031406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1916c6b01bf7fd3aba26862217c8e1bc1dad23a76b413991df83ee8e171cece6. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZHZ32031407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbef31112d68ca37e9a85cbc9609ef5a3a9ef08e74284ddd2188ce88494cb12ab. 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/QZHZ32031410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaddc6b579af570c2f0de7de4afa38d8c7497ede6901e4b8c10387e7a21ac5ad5. 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/QZHZ32031411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedede788f980c6ab4c48230c641b168438ff5e8961453fa76f3880b4d3454594. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QZNJV2016360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7b7fdaaa2b42fd379028038b5160ac7f2816d6be46ce25ad0865283fe8dccf7. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:33:25Z), 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/QZNJV2016374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0cdaa8248c65c3f43d3e9e0e5cbab29b80c1e2bdff04d31ab69419e42fdac5. 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/QZNJV2048278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa487f676145fae18646a495bc4b832d303c3a8289478e2786e188aee65eff033. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZNJV2048280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c3cfbc006334dd6380aa6fbe40eccff6b6169f5e23eaae1780373fe2f5177c. 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/QZNJV2048281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x158c092fc0e64bb8d697c7ad184a5386d192ecedf65d4855e868e953a0eded52. 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/TCAGH2270374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe58283eac05a902eb99c9d92b6499c61f0141600f04deb085e2ac935a6067cc1. 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/TCAGH2270383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81602df202b1ba50ee1e2276c22b8fd49e72060db31ab709c6fcd31b2f508d7. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAGH2270388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa17a9809e1be85a3b73eb53614f0833f0ec5fa089b66a5c241dbfe72648e7127. 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/TCAGH2270392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6b47edced285e82cb94f5afb8ac766d79461f90a6c5adeaa9c8409a5843dac. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/TCAGH2270403.