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 0x0c82277dbb64281f4ff96c00df31f1985caab47cbe3f24e7e023788478b9f8c3. Chain 2 (Bitcoin): anchored in block 953691 (2026-06-14T20:39:17Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6aa38c81-4477-4ba7-909f-2f10d0c83696.json and https://artists.proofprofile.net/proofs/artist/6aa38c81-4477-4ba7-909f-2f10d0c83696.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 0x9d667266431149a949dd1d68cc2711bc88c6898bd097bd44f8afa9da35ff5016. 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/QZZ782469344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb40e92ff48af3bf1c9767fc341736257bbc7e0ff95da3129cabee24fdb53f0. 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/QZZ782469345.
I Swear I’m Not Making Flute Music Because of André 3000, Although His Creative Spirit Really Inspires Me
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35727fc98b3ef4787c66a9ef6aa88149a39ea21f18eef748d6bbcdeaaf925eef. 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/QZZ792495253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35727fc98b3ef4787c66a9ef6aa88149a39ea21f18eef748d6bbcdeaaf925eef. 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/QZZ792495253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d667266431149a949dd1d68cc2711bc88c6898bd097bd44f8afa9da35ff5016. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZZ782469344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8715410bd7a4118a7aedca69bcc9c8f725f22de0e1d6d4531327be074210466. 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/QZZ7X2468001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7e08e8978559af2e0958e3043ca92c2f53f27b6a702ddc2b743ad48e93d5bc. 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/QZZ7X2468002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb75de7e81d4b4a0c0db5c7ec89feffb7ad3e69e537321d160456b0dd9fce007. 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/QZZ7X2468003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f7e08e8978559af2e0958e3043ca92c2f53f27b6a702ddc2b743ad48e93d5bc. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/QZZ7X2468002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb75de7e81d4b4a0c0db5c7ec89feffb7ad3e69e537321d160456b0dd9fce007. 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/QZZ7X2468003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe456045e2d293287c6d996c9d6bce42d864a0e6a02f00992ce6ec53c98f5b699. Chain 2 (Bitcoin): anchored in block 958828 (2026-07-20T08:01:40Z), 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/QZZ7X2468004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f98551cf96408db59aef0f0c6e1ff251733d98256b992e7a467f15c6f38797a. 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/QT3EY2442524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0c31e57c39a70eb0c1d20bc1e9c5cd389a316e96755831a1191d9d6986521df. 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/QT3EY2407475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7de9c2e447bf2b1c94238279db64bb434212cb8c2a2cc8f1719c963da81e50. 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/QT3EY2407476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bea8683423d8ccd201cd27c1bc141d89831ab3c9c6bdfff95030be825e61982. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QT3EY2407477.