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 0xe65bc3b67eac6548c31f03cc49422fdc564ded55ee1ce70f76941ec0f885827f. Chain 2 (Bitcoin): anchored in block 954014 (2026-06-16T22:46:20Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/35b123a6-8890-4fb3-8150-49d9b50a343e.json and https://artists.proofprofile.net/proofs/artist/35b123a6-8890-4fb3-8150-49d9b50a343e.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 0xa384dc2afbf5ea0424c521d179312bba1e2e933ff97cf8abba5ab463b790bcc0. 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/GX38U2186287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf72deaaf751d81b4008431e760628ec0b4fce6f1e410ba4cf5780af32686c133. 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/GX38U2186291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cf0065176eafc10e240581ea944cfa4eccded520d45aa05520adde7231237bb. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:57:05Z), 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/GX38U2186292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cfe5d5fd75b58029adb0176e78c9582498368cfd7661fb73d154aef38114e6a. 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/GX38U2186293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf0846d868b844b308a1cb8173626eeae3014d61256f50b6cb5789bec0eb426d. 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/GX38U2186295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5286064e0accb9e05b0012584217a86ff30482bf7063b72f41694562ce32bb6. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/GX38U2186299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0353e6e6b4c3a9dd6586d9440ccced362a42e701371e849fc5e7af8b26348eaa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:39:06Z), 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/GX38U2186333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf818a739d65cb24ccafcd3d0e23b78e7ed19abec8cb3df6638e375ad93a072b7. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:27:41Z), 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/GX38U2186334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8643e8e0f9e6f514d7e44a6166a06451eee13ce75e3775cc1a6a46815d69a4e5. 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/GX38U2186317.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69d079713b3cf684eb3d878667c26079598156d98917f8e2bbf4de8636ee6fc4. 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/GX38U2186319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd32cd4dbfdac25b6cf9cc7340fe3cd0dce525398a46af9d7fbb609d3e0b579a7. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T15:38:35Z), 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/GX38U2186320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2375e2a31247e49f715367d90940a280e37d5dd3c632b532fdeee878c71f611. 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/GX38U2186323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8502f6cbf4dfac65b07d459e2fc506e86045af2c6b410f519f18a9f81ecb9b3c. 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/GX38U2186349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf2f7237493c39cb06132a8ac4d89eb4d3ec3ae6be8c2e176c77a8f7c133e4e2. 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/GX38U2186356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22fff71145ebfd629e74b3937d3f97d3fddab6d20905cabcf9474ada1f1ab434. 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/GX38U2186357.
Camp Buddy: Scoutmaster Season (Original Video Game Soundtrack)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12ffae01ccdb79f8c281fec5b054b7e48eb2bc8621248d62b4373ef8246a7373. 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/GX5MX2276282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55563b35de73b1bf95716eacc42e1b77f881e3263e13b73328428f212d8be8b3. 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/GX5MX2276291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfd96e54fe0689306a4114b5f692394cd7e143ca17971bced12e984ba2cb6da6. 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/GX5MX2276293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c3ac38cd89b858bf362119716b7cd4de1e7f5e9cee3b7d778ac362f665b3a17. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GX5MX2276298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd9f54c153c0d77b207eecc7e7c89b1f668edc00e0c53a764e23dc14eb15d138. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/GX5MX2276262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8502f6cbf4dfac65b07d459e2fc506e86045af2c6b410f519f18a9f81ecb9b3c. 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/GX38U2186349.
Sleepover: reWake (Original Game Soundtrack)