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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb7d54931cdb761b804e2223a61a9afa932368fb208bceebceef433df67826f. 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/55b3a02d-8e54-4553-8d09-1b6098e38b54.json and https://artists.proofprofile.net/proofs/artist/55b3a02d-8e54-4553-8d09-1b6098e38b54.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb956ce3fa007c94820528e5915f65a66d4cd8469b8da508fbfea87f008fd0b64. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T13:49:16Z), 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/QZFYZ1964867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9949a93c0e4e753a78a95bd57fcba6f01431653ef0582bfe5c1d80ccff62fe04. 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/QZFZ31900197.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181f0c6ea4172b250e35d9a799d09906a865e242be7a2e6698b782a770ff7b25. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZFZ61994208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebcdc33ae59fb0f5cc7a720a4540cd88274cdf91ebb9905258642b071f97d4ea. Chain 2 (Bitcoin): anchored in block 958134 (2026-07-15T11:51:56Z), 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/QZFZ61994217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45716ba6d3f26fc39e397ca7f70301808879c4a2265ded8fe744efe58bf4f89. 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/QZFYZ2008562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1954768a5a058856470f5f49965a388ac095aa8b082aa573ad4db314e15965a. 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/QZFZ22099283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe99930cd0e0c64ae221ffcf09aa574485a5b2e6fbebb59aa8cd1ce88b4166fd7. 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/QZDA62016764.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ede16e94491ad1411af5dc68cce932f42bbcb0a8e95128464178026a1fec0b9. 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/QZFYY2248433.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22975fd54088668c683daf0f251da9829b58e89f5e2841a84fd6ab2f0a65a608. 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/QZFYZ2219208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cca37e5154e2dcd23c3524744912da38cd291a5e91b685e711b073e988afeb. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZK6F2269714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879232d9b6b047c9fb281b139ce8c4c7dbfeee02c99610172fe7a2451ca60100. 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/QZMEP2294848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1987df85caf10776ad18d63b86dd31ecce32b154820f52306437889ef6d10fc5. 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/QZK6H2238210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914461076d49fb8ae2fa6d19f117b747c0a393e75d9df8b642a17e6247e03415. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZNWT2204952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90c0fdc833ba908ed0ed8e235c673b129177612b734c3798b4f795ef91614514. Chain 2 (Bitcoin): anchored in block 959043 (2026-07-21T20:42:56Z), 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/QZNWR2222492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90e1ccdf6c920304d374ddeba3692755a15d75d0ae36bd415495cb8a983cc14. 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/QZNWW2238766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbafedc4730e8fbf9aeddd21fafb36d946e8bb37b6e4ebd9e85e4562887a0c9e. Chain 2 (Bitcoin): anchored in block 958756 (2026-07-19T16:12:29Z), 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/QZNWZ2267089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b5f77728e0e72759a4d96ae7e6ec0c52438ecf8fde086fa4f95cc427c4119c. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZTAS2239909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d559b1035565aab7b124628b45bff484789fd299072a20181f40658947162ff. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/QZTAT2203767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1987df85caf10776ad18d63b86dd31ecce32b154820f52306437889ef6d10fc5. 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/QZK6H2238210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb90e1ccdf6c920304d374ddeba3692755a15d75d0ae36bd415495cb8a983cc14. 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/QZNWW2238766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62b5f77728e0e72759a4d96ae7e6ec0c52438ecf8fde086fa4f95cc427c4119c. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/QZTAS2239909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x007521a579f79f36a7625a80b25a7eced5f3d43c2abd73e8e82f98ce60c0bc75. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/QZRP42287393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d559b1035565aab7b124628b45bff484789fd299072a20181f40658947162ff. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/QZTAT2203767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef8504d0afe6193c9bdaf5b53a3b9e82ad92d80a36d865ba424429ceb78530e. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/QZTB22263633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x914461076d49fb8ae2fa6d19f117b747c0a393e75d9df8b642a17e6247e03415. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/QZNWT2204952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x879232d9b6b047c9fb281b139ce8c4c7dbfeee02c99610172fe7a2451ca60100. 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/QZMEP2294848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cca37e5154e2dcd23c3524744912da38cd291a5e91b685e711b073e988afeb. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/QZK6F2269714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbafedc4730e8fbf9aeddd21fafb36d946e8bb37b6e4ebd9e85e4562887a0c9e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNWZ2267089.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd396bbbe81eaa7096123a993aef6c4c8903f9f8fa5053db303f8bfcf845f28d0. 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/QZK6Q2032637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5927d9ff06e30f59efc5ac8d23fda66b3983a513f1ae64ca20fb108b418559ca. 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/QZFZ42337920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3fa768f658d7c6e4167d95931625e9e94db4171873fd2c3ffeda01d52a4cc40. 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/QZDA72377943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d1480cf7ac868932f7b7eca75c8820680e039d6f8c6dd8d4c0a75c415783bde. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:36:46Z), 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/QZK6N2549943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba4bff23c84db99cea3cb6b1287e52228dd04d4cb05121020a8ed2eb4f5081f8. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:40:22Z), 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/QZWFS2552655.
Somethin Real (feat. Kira Kosarin & Sik World)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79960c4ba4ee7fb00d2613f335676766afb87b11a9fdd1d2a430aac9f464ebc8. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/USLD91718037.