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 0x24bf585828627e413e723d18190ec6e1a659d373b7080755eeb066c0a5aa2cf8. 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/c54574f5-c65d-43fb-a172-6c9e9dbbf141.json and https://artists.proofprofile.net/proofs/artist/c54574f5-c65d-43fb-a172-6c9e9dbbf141.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Han är min sång och min glädje - sånger av och med Pelle Karlsson
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 0x3e735585658f7ccf87c841fbc95a7b82a2c64d8eef07ce1d2e33775e01b001b5. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QM6P41510130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc981d5c32512997d7566d5b0c262f6e28fb82ebf79212ff2665b229af86e2a02. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/QM6P41510132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ddc7a59afb0f7407ce32cf701b10a404d7d6fdea40b61c32853f18086df3f39. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/QM6P41510136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff8983cec8b42778782352bca535f02908f72ede079baf5b84c19976beac4cc5. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QM6P41510139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572fd2ddb497e8599ef39424df07e3a6167ecea121714fa944d44d7e8b9b486a. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-21T09:06:03Z), 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/QM6P41510143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a95ab5a46c632c3567b9685177d0199d02879a5fadfbf54e07aeadb0cec8f4. 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/QM6P41510144.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56d59944ca800a6a6aac6cc63a1b93d10b6f62c0154a0f1ec3e7dd8b10d3b0f7. Chain 2 (Bitcoin): anchored in block 958627 (2026-07-18T23:33:54Z), 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/SEVPA0300801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47aa8e868e071ed496d8f39eb4a1b916d3ce09c81400141ffcc47aacecb7187e. 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/SEVPA0100104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca9c07c63d92dc83a0586bd94b06c074e296db02a6b6b72f95c9eb85b6fd5e1a. 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/SEVPA0500807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43c615971837110a86769dd53757040979c77788152e99ce828ae90ce14a7653. 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/QM4TW1511547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25db9b8cc30e5f3c9b853ed3cda1a00ef0c6d805b0be3fc0b7b0a0fa59c7be1. 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/QM4TW1511550.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd433919b57489d88f672c9f1a5a2b65fba619aba60c35c577975b8da21daa96. 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/QM4TW1511551.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafdf1f73ae48765d5cc0b5f739459ebe71ef9166045fbe7866fc034644819928. 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/QM4TW1511555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98c264ae7509eaea0a711a41cfda16381de73a701e52e61286484f4d87e942e0. 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/QM6MZ1414990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965f5aaa70125776e5710927e76cfd69703f8220939b64acdc4be54064efa6ab. 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/QM6MZ1414997.