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 0xa00c864e7c3e6fe9573f53e863a6fdbb6a1c9f10177b9dbde0a7b60d47df8bd5. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ea328724-5208-4148-ae4e-c269a2a21fa8.json and https://artists.proofprofile.net/proofs/artist/ea328724-5208-4148-ae4e-c269a2a21fa8.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 0x637b9d6caa18f2cc3a377d193f67968230ddd7af8d348770a067b8c8f22219d3. 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/DGA0P2485542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47baad424035da007422952db1896e175978cf8d0dd22e9f7ecc7de316bc7a3b. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/FR10S2108262.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74fe46bea5ccc9c0256edbd80f9e8784cddf40adc0c0923357070003072d2701. 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/FR10S2141415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9cea86798e86156b5650340a20b5a5698f064082a66d20ee1640ca056bf79cc. 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/FR10S2141418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21194f058bcf107e9086576adc835d7291fc269656b73f9b1488c19b8fb68916. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/FR10S2141420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x140daf803f695f34ae0879d3a0fddac5542f1e872db7ae598479c25870851831. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:22:30Z), 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/FR10S2141421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25f76f6915c9b04ddf28c72096366f5ff7829596e5648f3ed7e21692790a947e. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/RUB521221638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574cc96c7bde039a6e295d25e3ae7083fc2b95a24b01480803204ab40edae3ee. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T23:56:36Z), 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/RUB521219538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed572d818475b80f912a5b1c2f95e68da30642542bf21430d20888e50afb816. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/DGA052334193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a326006484a6c194510575fd55c5dabb10079ae55f982f93caaf3a6ed7c0df3. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DGA052379379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498a0a9c35a07a4642bcd619ff3750dfabeed2ae9fc3f823a361fdbed7dce02d. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/FR59R2415238.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e5d37a9e5c54a9151e3fe87c407726e22a940f1af56902e8d23de03d5a02e3. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR59R2415243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f2fd329f23535c8d60c92946a6ca974af664a604beddcf5a31c3794cbd129a. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/FR59R2415211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845b1df1128f68811eb4730f51d34b632e36ec14b04d8f4c9a2292441669e884. 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/FR59R2415213.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84110ec39bd9555b883e3142877cf9577b53c5612c762a3dd4b84064482f277a. 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/FR59R2415214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703369b0fcb3db62209ee75bf66e9fabdc1b355ea1e9d8f6775030166ab3c8ed. Chain 2 (Bitcoin): anchored in block 957599 (2026-07-11T19:42:17Z), 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/DGA0H2460432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x437fd8a3694924a03c4ed3547552b1b9323b7cb4173fef5fad3a1bb8ff90486d. 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/FR59R2550413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b88bc7930648852a68e216e11579f03221539e08071d9dd7acb162f63b84b6a. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/FRX452537094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5438600c4466c714279df4a84ea4dcbbd1b6e83db1a5b8fe12bef36336192dde. 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/DGA052528253.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefefa98ff65e88c80a26d458be34fee2e5d580ca8f2bd07f22068f58924f87f0. Chain 2 (Bitcoin): anchored in block 958878 (2026-07-20T15:16:35Z), 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/DGA052528254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b05c945ddadc47261fad3b818fa5e8b4adbcdf1bd0b75830b4168d3f86ea92f. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T17:52:32Z), 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/DGA062533458.