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 0xfe93427e62816cf5511e1c2016c1426f2bc84c6aa9737ec6e69cb83a9aa7d5f6. Chain 2 (Bitcoin): anchored in block 953605 (2026-06-14T07:39:50Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/11f087a2-81d4-4188-97f0-4c5b47b45c3e.json and https://artists.proofprofile.net/proofs/artist/11f087a2-81d4-4188-97f0-4c5b47b45c3e.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x747e0792b49044348227559f360885f3aa4483a34d552251558e0aa45b5a1a07. 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/TCAHZ2450405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x165c1da98532e065c79ccaeae3e0122d2498096340877109ec0cf10a187469c5. 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/TCAHZ2450425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x422098276be24d347306ed10808be2cfc69a46934bf5d692dfc3a006d01450a9. 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/TCAHZ2450430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc63a9d8a5dad31884520478d7656a0c91620cab28fb494960407647e03218ac9. 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/TCAHZ2450431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1e011234f3175f32277e261ef17d11ee898d4a89158d1ac8485fad2bf2f240. 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/TCAHZ2450436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb9e44ec59ed8845eafc7bfe9ea5ec9dafe4a49b2e392e80a658ece920470cf. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAHZ2450438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb78afff89ea29f8c216873fec4457b403bca71351be6ad2cd3a5cdef8d7c3b2b. 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/TCAHZ2468142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b534aee4b6ee642c50189865967752d7d2f8fe17f5c74b3998c6865ea5422c. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAHZ2468145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbc5f00d71d8d095dc2aecc44cae6d3a72423101a88af17d69d0435ee81a366a. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAHZ2468164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121a3c3473a1ab30da08a367a6284563b94e136cdf3ee8e193466396047418f1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAHZ2468194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31e8364002737d6fe35573f627b2f0acb6a48b12eb6d90954a803f0ae7ff73a0. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/TCAHZ2486567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfab7cf70876b11c8a1772563da296b51c5ab7a608e0daa389e62f694e11c97be. 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/TCAHZ2486576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e483da50b9a2d3ae73d6fe1e60b432157e9e2a1087e609c7cf29b16db12bc7d. 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/TCAHZ2486583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5eb822559f66ca87e85653f94141de496695024480f646fa4c87239b6eece2a3. 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/TCAHZ2486604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe966e8d3779e8b38dcfe496b55dfb53fc75a7fa4bfad294a4f6f2450c89a57c7. 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/TCAHZ2486613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x985b1340937343b42a4b79dfc25ffbd52bbfe3cc89823721ce20bb473a063c54. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAIA2417257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b468374d4bdc19c3f2ebefface1a63bcec375a02bedf1fa8e4db56a5588a401. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIA2417263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dcb027a0af3bbd4eb06337fd8a5f861e0118cb58d129737e91c400c9eda1715. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T03:09:52Z), 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/TCAIA2417277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x632bd324980f5dbbb2959f34b00c18f6ce3d879e31c87ef0e5ff2a6227e5b5cc. Chain 2 (Bitcoin): anchored in block 956859 (2026-07-06T01:42:12Z), 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/TCAIA2417279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b2f2474e72eeab50b296dbd662897c5dfb78d8b299cebc56dd122bf3994b57a. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/TCAIA2417292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x998f25109e38225e6f5191b136c4f07d660f69edf4fc4f91a1ea5143bc7d8d1c. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/TCAIA2417296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8822481c99c6faefc3b35d93229df43d7f9b85adb82073c76aecc9d7ce2abb45. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/TCAIA2417313.