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 0x8bf70338d6e0b44a7024ee9b39ee7680acc861f27fa3d7ef616fce39ff0d0be8. Chain 2 (Bitcoin): anchored in block 954717 (2026-06-21T15:47:51Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f5926d42-f82f-489e-ae2e-4b4044651f06.json and https://artists.proofprofile.net/proofs/artist/f5926d42-f82f-489e-ae2e-4b4044651f06.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 0xf73b3e7a890e1f2c195e9d078d11bd20ab5bf2090639a97290e481c51a41e67d. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEBFO7015010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1c0338a699173f72c0886bf973e053df916cd8e4eb5e0f04808d26754dad5e2. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T20:51:12Z), 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/SEBFO6905130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76075ae95fb9d757bf994782452d5f2b15ffee00c5777d459ade62f120602047. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEBFO7818010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb719da85ba38f40711e3c116c68a70795c7de3d2832189a167e3a173fd74fbe. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEAZC9326040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf60f50e6956449c53efb663f0f48663ae31363ac9c67ecc37ced6e8ddc3e045. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-16T23:53:24Z), 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/SEBFO7917010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf47d2a6ccace18779e45fcc7222a2bceed590e535a070be95b17492d323a3955. 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/SEBFO7307030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe15d8c174b917504adf092ac79be4a6fc162a6d26603615030385f78785dc0a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEBFO7307050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8b362660b4733243f88c463d1bce8a1fb84025ed3412bd9448b9d1130aca3fd. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-22T01:01:18Z), 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/SEBFO7818020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ef13489cff33861f3d6400c7b50772fce90f85711c6348d30f1a1816f0ac5a3. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/SEAZC9326010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98da2a33e1a6673db9f1f1f051b7b8516c381fc82f1e09852768bfcaf8637c0. 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/SEAZG7903010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc6cf866fd319409200724de5af6721d1e92e07b1308cf8aea4196f178ef0c10. 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/SEBFO7013080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb007460f4b62f1073df12232917f06688cbc015f3d290b07193c952a36ec3b5d. 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/SEAYD8212020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x931fcd77ca686710e7cdab3abb8d4b909346dfc4dcf6551b841a91eef7ede520. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/SEBFO7008010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e83177196430fd55944cea073dca3df7e050fa1097895abf4b8091bccee475. Chain 2 (Bitcoin): anchored in block 960121 (2026-07-29T15:22:21Z), 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/SEBFO7102010.
Kniviga låtar tillägnade länsman i Delsbo
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5619509f16024ef3ac7f343445fef3e7ad6b95cab63c5c90720ed53ceba9672. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/SEUM71500903.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43812dd1cdfa13e347c8496a1dea63a850c959376868113eb16df82dc05d9129. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/SEUM71500913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45e196069da2e3641ca1218ea1b1b6f770e9cf40d6915b7e4e0f4a88f47c801. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/SEUM71500902.