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 0x7ae3a145d149d3d0397e7e41968bff0194067c659c8756638f17420aac5065ab. 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/62bfb544-fdff-4c71-a847-54530363718f.json and https://artists.proofprofile.net/proofs/artist/62bfb544-fdff-4c71-a847-54530363718f.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 0xc157924f555bcb9693e6c6c83ee931e552154c147570556b144b4cb605beb4e2. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SELJA1200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9baf8b1cd2be35c24f36bac0c3c4cbe76d70ca6d4c556f94ee7d1a6f8c3edec. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/SELJA1200503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02b8a2defc48f11a5021f84870ac059f56759bb7effe5c16f40d1ba0a79c16c8. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T03:53:19Z), 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/SELJA1200508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a6549d914309012b4137abcd6bf566300bf9416fc08b2bdecdc5c4bbb48ce8f. 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/SELJA1200509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa846df414874f9c5ccde1ae60bf8d0f669f25fad11d187a5ca8b6ee175c0fee6. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/SELJA1200511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efc8494a1780864c196de47c11160ebdb7eb539fb9e62a864080ddbad37b673. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/SELJA1500101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf52356c45b139d095a36f02a7866f1796c60eec70f361a1d8cb69f57c99c151. Chain 2 (Bitcoin): anchored in block 957730 (2026-07-12T16:41:26Z), 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/SELJA1500102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0a42301e6b04de87f40be22da79035c0795bef322d8cd7c880b242da7182d19. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/SELJA1500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x537ccf1dde1ebfb387ce9dad5a45cf743f5e8b095fce211d1abc709c832d8279. 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/SELJA1500106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc30d114448effebc132bbf5a28822a830808a703923fbc0e27d1e565e1ea36fd. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/SELJA1500108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40a8dd8fa50e35d65faf4915013fc5b68c8c390cb30ca8bb265b09d366371c92. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/SELJA1500109.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3df87a94ef053568f854e354bc90a9be1b845f73a74dca72dfb63b49e9f8621c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/SELJA1500111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x249c45caa753f25d67bf2233e668db501e6fe2bde9531f6fea195b424c23d4cf. 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/SELJA1500112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37573fa3072ff774daf4d2934903ac972a6585b31da1467f4499adf0e4c486ff. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:39:56Z), 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/SELJA1700302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d451c8bfc58a8a8c04dcc7e35bc4cf3625df3fe9d418824c7746bfe9e6bc214. Chain 2 (Bitcoin): anchored in block 957717 (2026-07-12T14:54:03Z), 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/SELJA1700305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x162e2ab15105e0cc8fc65b73fc99a64018a0057141b54862f72c8a71a9181148. Chain 2 (Bitcoin): anchored in block 958817 (2026-07-20T03:52:09Z), 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/SELJA1700306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f3342036da3104cfcec85922f6fa001140bc7da1d68072ba29da00c19c06092. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/SELJA1700307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb20f529f724a6fe94fd8e21cec9340e567843ca0c7c636ccb7cdcc058be2cbe3. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/SELJA1700309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe197eb12906ffbf7e0dd8c0d3408d1b82117a62f194bcbf1ea5cc2359c1f0476. 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/SELJA1700310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe03826872969910075f37f007a7268d1f1d56992294e5df4b346981abe5edf0d. 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/SELJA1700312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x373b098331af6defc61c5abbea1a062d0af55d49a4a972b68c77a39607bd7f04. Chain 2 (Bitcoin): anchored in block 958404 (2026-07-17T11:34:58Z), 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/SELJA1800701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5c21b4da1aabedc89356402f7320b5ef48f4eed5f316686b75b1708f51baf63. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/SELJA2001101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7374cc63b59e2c83adcd322c8d521bf6127995f5f02ead3ae627bedc1c788a76. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:52:56Z), 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/SELJA2200401.