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 0xfd4d6293e4653ba8f07a2528a7f445790aef6829733978940abac1aa1eeb8948. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/6abdfa00-b184-48c8-8b77-2a2bc5825770.json and https://artists.proofprofile.net/proofs/artist/6abdfa00-b184-48c8-8b77-2a2bc5825770.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
In Color (feat. Ravenna Golden & Robel Ketema)
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 0x76452538a5da2819ce23256be8edd1610ecfce39bba4fdc3f77617ff98d3da10. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/TCADL1853304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552a23765e6a9c8f8dd8a5c52ef1a4b6fd65e55e01addaa26bc67e19796163c7. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/TCADL1853312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2bd2fb2343b5d24e9a4846976f57a4867d1622751c3a5b3f0f3b944ab3e3382. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QM24S1924945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x946ccf58b7265da364a17980929a849151f8033ea849cbd828ac86ff46b4375e. 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/QM24S2010097.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4625f3887f879fbc4d5b14ca05a7fad1caf0534da4cb0e17e3fa6298b6d5225b. 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/QM24S1926323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7a1d47f9d413092c0cf0b009eff8db84f6fcd2b703a0f06e9a1e789fade99d. 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/GBKPL2030684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1a7a58ccf5d6f36f003ea1f2a88a5b2f97f490d8b6f9dcf2dc0607fa629fb. 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/QM24S1845649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe071f4d24fa946162fa0dfd80540f22b63f092cecc032879580bc56bd9447c7f. 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/UK9951802804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91fa041547fb6265607016c09913ed1f6124aca0883ca315c695eaf443f8341c. 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/USZ4V2100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4a73a53a99ed5b95fd50b013c62c42394284e41aabaa3e6c170c70940bfa6b5. 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/USZ4V2100100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e6311b76ad1052690a2a6b4c739e753379537c0e477470c562f01a41df291a. 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/USZ4V2100101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48270b6d72f082a808351c9838029e0b41c18147764ce71c6962baa1a9087087. 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/USZ4V2100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc68e074d4b968d3371422d4d8ad0ff1d47b013a7c27fe9cf406be3db9d147e91. 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/USZ4V2100105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3851ea51532385069247157ecdefa9b57300b9f72f81da228587af8e7497420. 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/USZ4V2100106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc976c865581758da6c0200a2a520d9f064142ecc562be1e8f4c34f428e597464. 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/USZ4V2100107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f1a7a58ccf5d6f36f003ea1f2a88a5b2f97f490d8b6f9dcf2dc0607fa629fb. 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/QM24S1845649.