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 0xc1f671db770bacc719721919611f45df6c28602f8eb7a5fae147646efd11bd21. 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/895facb2-417f-4b81-a862-1455e9eddc33.json and https://artists.proofprofile.net/proofs/artist/895facb2-417f-4b81-a862-1455e9eddc33.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 0x05a4d8c3e2944769cf92778e31df56549cfd8b38e2c774a01618c7c5502a9e0f. 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/NZAU01500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed2f467a6e0ade5e3bbc617db21a7651d3afe89f303b05687b1cace181682bf9. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/NZWM02400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59dfaad3b319a2b46b0e727e63dea55c2c7019e75f9a9ecc7072422403fc5661. 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/QZFPL2100468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931437beedc40be86d4fc5b2bebf389ba6f96215776c7059c90c99bbc2682d0a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/NZWM02300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41582a4c5ed9f6901bee2fd1196105ecea844e8743bf509417b8b6e52c8f3a70. 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/NZWM02300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ecff9e1c1755e6dddb33457b68bf8e91f81a8c5edeaabf520d7846b5e8322fb. 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/USUM72200082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf41b769185d0c921709a62a61b55d65914129d62fb6b11ef909698e6b83ee634. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/USUM72013852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06a54f5fd641751d7b8bb31989dd15ce297feaff06e830d0b15fc3194a0ec829. 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/USUM72010424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa934c1ef67958624e40a2bd5555e51589240eb21e6f8a4882d190112ac822593. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NZAU01700001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd2ffe843027c53d59542b9a91472eee0d2f19dbe92388c5b430d2ed3ca447ee. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USUM71901630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdef9706070ade296ab30821fca9077a8469e0afd7fbc50ab9544caf7b45f3943. 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/USUM71809166.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96580f0b66fa6028166a09ea6c08046a409ba9ce6659d59aa5da8c1d9f6c03fa. 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/GMBA21474576.
I was admiring her through a series of precision cut mirrors - EP
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24621b178729782d43b37750aa751c230b686564cae2182cb010c5e3865a87d2. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/NZWM02400025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfee3be8af94b58d25a40e9f69df4e1e469c6fc83604d7e3404dc3b24219da427. 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/NZWM02400015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b6ddaa23441baee8f51216f48ee7855d58d2f6cc783c9416d705ea8840deed. 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/NZWM02400023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c18779d0a66ea83db6b697929139a3004217532871e92fa2f01380c5ea9fd7. 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/GBARL1600290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3252ee79fd8d05ee4a9d8b30dd19156f5815ca2358dfd9fb4860ffc7026187e9. 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/USAT22211992.