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 0xc39b066a296d9e6f206431822894265706e01b2d4c762ee79ae7c4cd578d6a34. 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/6527a978-c96c-47bc-a1f0-0ac1ae1e6799.json and https://artists.proofprofile.net/proofs/artist/6527a978-c96c-47bc-a1f0-0ac1ae1e6799.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 0x816e2ae35b4b0e8797bf58b9abf8f23e82c66d0cea7ca3c01a34b93408842ea1. 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/SMRUS0057159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cef9fb285fe60ea76436cf5bf2002dcfd0b02b54443ce663ca691c2feafe74c. 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/SMRUS0057666.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c45e7e61dd5c81d21f4a929bbd401a4b6eccb4dcf7372004f4fc042cf39d3fd. 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/SMRUS0057395.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc249e8146c2d4915cc74e5ff0ba9d85a95c8c41a97247b0370c11b1bf2f30bfb. 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/SMRUS0059986.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e9c83bff829c6548506beb7304371380e4ae088ca69f2d262b177eb7f97e8b1. 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/RUA1D1925164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x243fd33c8ee4bfcb6e703637ba5ef6bff22376aea0d913ae67d6d08aa9ec29f4. 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/RUA1D1925165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d3d45551116c17b2c9f87c780c263de1f2db27a1ff589d6ad0a2698993d667. 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/RUA1D1925169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cf134acf84f7448e5066e2a6879f88527a73f4af79b429d9941355f99bf55f5. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/RUA3R1927112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af29fe2bd95383124f6325838769ba06dc3bdcf032839a1b1a1ec1c76b4a4d8. Chain 2 (Bitcoin): anchored in block 958897 (2026-07-20T14:57:46Z), 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/RUA1D2010740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d694f744f1551fcfeae4969f437589eddb2c0689d06c5d41aa694cdc6219054. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T06:54:12Z), 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/RUA1D2112930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x075ffeddaf1c8138fc9f6355c0792b58fe9e981a69ed3ee5be954099a7cd303e. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/SMRUS0068074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd717546e89729120aa558ae0976f354e71d8f6d703e024a365e7b5da77771b2a. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:35:57Z), 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/RUA1D2122748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab291037a94ecd846c79fd9936db4cb084ad075a2f3cc22a11d4c6a2cdc9b257. Chain 2 (Bitcoin): anchored in block 958523 (2026-07-18T08:54:12Z), 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/FR59R2278140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a6f588533be93d75b75d366cb82a9c95df2ecdb52369d511814c1a55581549a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:47:30Z), 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/FRX282236151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbcda06659beaced3e4595a927d15cc085f630062a352ef7c5b9bdedc0f9cd7. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-17T01:02:41Z), 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/FRX282236155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007d35cb87283a4b65cbe53d5d1bb70bbc221d6785d3d6807438c54263dfb2df. Chain 2 (Bitcoin): anchored in block 958644 (2026-07-19T02:21:25Z), 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/SMRUS0073518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce86d496bc335658115be9b8830c223c611b335c2b99cf11013180029cb12ac5. 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/SMRUS0073692.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b5d32ac96e2fb079a88bcb00cf603261a83bc7512232f1094c826e54a5f614a. 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/DGA082201576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cca8debdceaef27a9344ee2541c6fd8912e255c65bf387f0e4ae018aa00f8bd. Chain 2 (Bitcoin): anchored in block 956578 (2026-07-04T02:23:20Z), 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/FR10S2364581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41992fb3f587c3cbae8d73e4ec029c136fc8ff2e32a0cac1f66b6c39528f0998. 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/FR59R2386238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14866e073ccf8dfbbd3af8fa8182917a0dc7ffe99d0adcb0c7101adc837b8a19. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T05:30:25Z), 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/FRX872436299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf21e3e3a272695feb5130629040823c42a6e359f9192e9bd27aaa1f59fe89424. 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/RUAH62405854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2316cb9dbcde75cdb1883027cf74127add10ead84df1dc6e88b73b8dcaacdf6a. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/GX3Q92574935.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab72d28ca8e21ed77baa2cedb8d333fb1ae761b48bf2a25196a31bfd16e88dba. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GX3Q92574937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad7d1eb909ae465379ed585dac66355eb3f145dff478742315a27cba181fe5e. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T20:10:00Z), 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/GX3Q92574936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481b174640126d061fd45f4c7c21ea2c13651fc7af26d1c73e284fb21ed52697. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/GX3Q92574938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724d553f6c69f22cc20ab0a5760022158ecda1e9d6ff70007614a06c7988cd71. 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/GX3Q92574939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e06c2b207b14559279f6de8ca0ce43328e25b37447634dfb3d7737ab4c15e3. 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/RUAGT2532577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b4e12254e202ef17c582120df2be7039a916554eaa07b835186f2d9444e7dee. 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/RUAGT2587985.