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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 0xeba041ec6ed3ea54a628c9e9b34f7c490ca77c45465a0b64c51a9c9c9889bed8. 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/c1c4885d-3ac1-4db5-90a2-eba7f9faf3ac.json and https://artists.proofprofile.net/proofs/artist/c1c4885d-3ac1-4db5-90a2-eba7f9faf3ac.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 0x14067d1af52116b400ec8c2823ecb2f8b0039a629340c2b87042efc66d5e8a21. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/QZDA81914247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeaf4c548514e03ac9c70b1ba97fd1fefd5bcc6f93814266736c95636eb3fd23. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QMPKX1695482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5fb68e77afeb027dd096eb2c5682adc49bb6045be9887c295cee1869b2670fe. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/QMPKX1695483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x183690907ec1dacbb546e67104ffa7d39754fc9f3fa6914c0172836876302804. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZDA51838558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dce9dcab472188c366bf684651752af5792b969130809fcf366821d83911a20. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA51838560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea6a46679fafb0ef4c3dc56a42027980a4814f4a514d025d63bf0ee683299a31. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZDA51838562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6036352e58b9f834a9f7aef5467d48a8cdc0e301c221ad13aa6a7effffb73e1e. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZDA51838564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3be06d257f7e17c5b5171ee12b96b7f119759b4edf6d29c1088ced51effb959a. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZDA51838566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1226697b6f9a7a2bab81f890918434ce9cb67ec314ad07dfe76eaed5e046b369. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/QZES81870391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef29a674c1d56442c7c6f75df47850043b08a2c1bf463f2b022ed387c435a2ed. Chain 2 (Bitcoin): anchored in block 959023 (2026-07-21T17:22:20Z), 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/QZFZ61903794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58bbc07188811f2af40820309838747a223e2d8f2d11cb8a7bd655d4b563cfe6. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/QZFZ71906592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa962203cf29583aeecfb4e20652cb27bead49e75c15cf0d1f2a39b98dab6c2. Chain 2 (Bitcoin): anchored in block 958465 (2026-07-18T00:04:42Z), 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/QZFZ71906593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f1e3003e5ac187cec8aa2c3e81b12d891af5c54daf8add85c058cd7933fe56. Chain 2 (Bitcoin): anchored in block 958140 (2026-07-15T10:05:23Z), 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/QZFZ71906596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba1f81d55979daf0df7e4281b664898f90a9432dd1c0b24f21b8c4efba5eec69. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/QZFZ71906597.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16a54cee7cdace46a2cace2e31d4131efb9e87706cf1c838d7d872e921ccacd0. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:29:20Z), 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/QZHN52383739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f15cd66e0ecbb68e83c9eaaa2d2254122cc235ec8bd21fcc0f6b3385245f213. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T08:39:15Z), 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/QZK6N2376404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f15cd66e0ecbb68e83c9eaaa2d2254122cc235ec8bd21fcc0f6b3385245f213. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZK6N2376404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18f2012f498deca3d16ca9387b16aa2452cde9b8898d7333084ae833e8c75e27. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:39:27Z), 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/QZTB92357912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x755151d8525b5dad2c8b9d3dd92087ca622f39e23217f21d8cb8741e67e083f5. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:39:05Z), 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/QZNWV2309127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36c6ad8b90ba4f25dd6cb030cbe85b031361d830f81f70ac5d6a5f8e406fd796. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTB92357913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x720edda2e12306c0d54ead779175d2470a139db21d809efb0d97de0cfaae2bd6. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:12:24Z), 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/QZK6N2376405.