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 0x85ee51d2f247eb7a0b0fd5cfc925f1d8775f2ca846759c5e110b4aa1c1e402fc. 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/93d904e1-c2a4-4ef5-9edb-63ff6c225438.json and https://artists.proofprofile.net/proofs/artist/93d904e1-c2a4-4ef5-9edb-63ff6c225438.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Ethno Sorcery, Vol. 3 (Compiled by Salvo Migliorini)
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 0x8577a0a9f25e6504ff53fe2ada679fd9ef8197cc3a6065373224e001f0f3cd61. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/DEH742226697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa465d907f0ea323d4c3b1f7e1ec7bb700248db7633f8466e0dbe538f0b7fd758. Chain 2 (Bitcoin): anchored in block 959010 (2026-07-21T14:03:34Z), 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/US83Z2324771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdabd1a36a8101531db40a49ad938cf3fb05b2dc9ea283196407b3e13f57f977c. 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/US83Z2489319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbea4f0f594f49d6f81a4154f176ab8d3bca0b5f88043c124fce3dbfc5fefe340. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:30:16Z), 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/US83Z2401819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c9de27ee3d88fc52876bb1b60087353766a89247f79c81f57abd80ada837594. 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/US83Z2531227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3342c8d7d94449514ac908beced34f632c4bf635c9c488d74be586d365ff5c. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:30:16Z), 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/AEA3C2500149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a1d8179d13722755fa21da82b10cf2121328973f72c2c3d2274462e3595391e. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/US83Z2347751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74e0f7cbccdd9b34154197a72a791d1ef8234642dd08540304c5176fd313db49. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US83Z2216320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff32783b532100a163d43f631376f40dd548eda9c722cde0ad2b533aa7c98580. 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/US83Z2320772.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2757b47ac51c18c4616d2bc2603a34bfe3ced3641f78d10470dd2d4cb339839d. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/US83Z2472402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8eaf2802be82e16754b820c88498cdbeb213fe8bad571c939494319e6f0a10a6. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/US83Z2303611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x893f60847e83ce11df4ae9b26ff1aafe7460f2aaf04ac3bb6efc8548d9064beb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/US83Z2303610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9151039b9c8e311752ae09284611f34b77371759d1212199f8d1148fd2e052b7. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/US83Z2149453.
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 0xc3e7f8ff61b6658e8c960092a16302496c203ad1dfc59393e96721f46a017924. Chain 2 (Bitcoin): anchored in block 960240 (2026-07-30T09:57:33Z), 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/US83Z2223289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0eabbd99df23b0c566cbe8e94f6deaacfbaa0f03ff3f66c1305b1ff77a787d6b. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/US83Z2458391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2bd8ca90cf9bf5c5766f22b85c41e4a5d3e7092947655114ad09d2f0b53845. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/US83Z2303612.