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 0x187c9ba4b654ae3b874ea9427d31dbd99766cd21ca8b24cab70a4dd2f401f6a7. 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/6269c735-8ac1-4dc4-b9ff-dc8b00e5a1a0.json and https://artists.proofprofile.net/proofs/artist/6269c735-8ac1-4dc4-b9ff-dc8b00e5a1a0.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Awakening of Life (Peyote Songs from the Kiowa & Diné)
Four Peyote Songs led by Cheevers Toppah 1
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 0x94e504bf4d132e4562d13fd6edd3fe451f3ef69b9ffb4e14f7505634cae2484d. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US8640845801.
Four Peyote Songs led by Cheevers Toppah 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x064f1a9cf10eb9dc0faa06324d94d22e5a9cb5ff5fce9f2a5f34b6e02ef14f24. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/US8640845803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x649ecc1c45a8c20301637c3d93e0bad019131c9d3a13c16734646db3202d2ca3. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/US8640845804.
Four Peyote Songs led by Cheevers Toppah 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb0df053addc0cf0305e0f3d23260a1773a1c520bd0b50367fd29912a1880cc3. 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/US8640845805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fe3c1f0fc14d75816eaae60a616a9482bc52d9094eb391d9dbbafd6f2d595ab. 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/US8640845806.
Four Peyote Songs led by Cheevers Toppah 4
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cb9cb4a23f18a9cb66187aa8f44184784f7c6f72ce38e813a8efc448ba418b. 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/US8640845807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadcb2d697848f068784727ffb0c1a7beb41ca4e86f415e18148d2269018968e. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/US8640845808.
Four Peyote Songs led by Cheevers Toppah 5
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61738ff852a77d2a1b254e83aed3019d184b0a35a72212ed8489753539f42b95. 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/US8640845809.
A Good Day, A Better Tomorrow: Songs of the Native American Church
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfa9fa3d9f3e7a5ac34c9764107cb0dc7c3c0ace51638046d639f9f50583068e. 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/US8640741601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38886ae962401e4630d0e599d2eb7d251c5786bda2017b1834bf625dfc1bfb9f. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US8640741602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d63ead9d689ee15c2739168760a7d5677008ad3b4447054177c4253ee566167. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US8640741603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43ed6953de487848c50b6e037635074026552ca9af98862803b7a089497a64d2. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/US8640741604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40bbfea8ae2ef62865a42e4608c0c40cd3f20705bae264e7d1d1aaf27cdacaec. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US8640741605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42dcd5189b3665304783189c545bc0deec8008f29cf09db750cac0b77043b5cb. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US8640741606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddcf1678f1103ecc22e4e06832c4360f5a6773b8631fc5aaf8f3a5a07b369a69. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US8640741607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce6f76efdfc5eef7b6186bfb8817004abca20adca74709a3295ded11ff6e2c74. 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/US8640741608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd748a9d664dc732c270359a07d67415d4cbda566f12e947f75cf6fb93dd57b27. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US8640741609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b37e2c274d71f8e3856c836f55ff7f4dafc5e292e460501b80887f99f7e00cd. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:28:39Z), 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/US8640741610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd6f0a929d166b3ffc10749fd0bf8cf2ad98572bbb1cc5b39c793f6513f9438. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/US8640741611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a5bce0b3aa1b59786755d94175017179ff5fe73dc6d6848706832aff65634b3. 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/US8641149714.