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 0x52287361a9e95fec5031519b3f29b51cd2475c3dcf8546807ecae66d6106ba0a. 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/9fd849b9-987e-4ab8-b107-8223e31fb423.json and https://artists.proofprofile.net/proofs/artist/9fd849b9-987e-4ab8-b107-8223e31fb423.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 0xee67292b258b32519540568ea542b2e25f0523aff39fb97d1537b21d28f03926. 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/BEFH41600001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x506b596163c7e0a5844b05afa6291bf2703f327edc2f3310c8a3a5b6bf94e4da. 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/BEFH41800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca0820f347272bacd04a652c495d3510a5dfd9ff6c2b470c3c54ce643f3a4d5. 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/BEUM72000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11ab01362484b7f84a1d7e4406eba1ae9571ffd2c1ed2be50eaa7f755bf451b4. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T00:24:07Z), 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/BEUM72100073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce79531a1a3e731d54d525b9d9b2bb76d757f2755f9f805509b22778091d3067. Chain 2 (Bitcoin): anchored in block 958959 (2026-07-21T03:51:22Z), 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/BEUM72100111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x987ad7e239c371b93e227d0bdac2d6a705e0a16530431652bab20c703b6cfddb. 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/BEUM72200218.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13cd3ef9dacf20f8834d9e5bcd6892b313aa8a18cac2c105171e347c50726d1. 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/BEUM72200261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca0820f347272bacd04a652c495d3510a5dfd9ff6c2b470c3c54ce643f3a4d5. 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/BEUM72000120.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe13cd3ef9dacf20f8834d9e5bcd6892b313aa8a18cac2c105171e347c50726d1. 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/BEUM72200261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c5bc74fc9ce34936807a567e200bfae2a1b0a97dd1e45d38fc2246b5e3adc6. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BEUM72100110.
All The Things I Couldn't Tell My Therapist
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb002f0659b399096af95fd3d049b96fb0428920765890cd441525a7cf620b300. 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/BEUM72400159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7251151214066cdbc71ff522a9f4186f183ddd541c0c8bed9dab5ff8e98ad3. 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/BEUM72400169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa24a4340f45021d2797edd8f115fb5ba9c464fcb3d568d0a9d50f62bcc3eb0d7. 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/BEUM72400162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe773b6b38e564be628cdbd4497b0be72a672b61ffe73675a183abc2238fbe9. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/BEUM72400165.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbdfc49759275420bd27137084bac564308db8464595a22cc7f301891cd25e4. 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/BEUM72400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb93927f494a54cdbc93eae13cc50fe8acd5f0c87e4b2b3883fb2a559b4c97716. 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/BEUM72400167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f1806ca0bc8345891db86461ce715aa8fa423c0b66f56b417bb94a65be70751. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T04:55:29Z), 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/BEUM72400168.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbdfc49759275420bd27137084bac564308db8464595a22cc7f301891cd25e4. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/BEUM72400166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012d213fa01aad78224dcf9950b24aad3d9ff351aeeba37864c7b425ab5ec17f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/BEFH41900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x012d213fa01aad78224dcf9950b24aad3d9ff351aeeba37864c7b425ab5ec17f. 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/BEFH41900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x371ad712ea9c0066487a58e4ee6df310508d044a2a39197ce2bea95d1752ee40. Chain 2 (Bitcoin): anchored in block 960404 (2026-07-31T13:06:57Z), 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/BEUM72300027.