Peter Hallström is a Swedish songwriter, musician and artist. His song "Håll mitt hjärta" (Hold my heart) is the number one favorite song at funerals all over Sweden according to Fonus. The song is al
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 0x2d05459e13ada1ec577bb97d0a2336ad2f8f2ce6ae05d0d10a4ad3a469ada422. 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/10a852e5-38eb-48da-9137-b81ea09fb779.json and https://artists.proofprofile.net/proofs/artist/10a852e5-38eb-48da-9137-b81ea09fb779.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Om jag inte hade dig: Om jag inte hade dej
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 0x11070de15c085bc5b8ee42b27b796a0de05fcc29cdc070700cbdc3f4dac7c54c. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T06:49:53Z), 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/SEVOZ1200501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x861f96348bbf8067651e8247d337c1af4319a888fc1b27f51bfce86335e2870e. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SEVOZ1200502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ea66df43743806bd6233dda8275668897e60b2f2e97f51f8e0dffc6767c3b4. Chain 2 (Bitcoin): anchored in block 957766 (2026-07-12T22:25:04Z), 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/SEVOZ1200503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b39ad3b4e1f90e0a01027f773a9d43151cd28a5cc6e429fe72c872f211ad6d1. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:57:29Z), 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/SEVOZ1200505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf76313cd6c4a3a25e29ee56e6aea5eaa48eb22bed563f265a1348e4f58dfb5f7. 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/SEVOZ1200507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99b116bd546b4dd067b2186ea555f6abd587049697c60d961187df0a39f3bbe0. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/SEVOZ1200508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefce0a6215ed5689bc4fe6d8182328569214c953b2dca6e20704219b30be13f0. 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/SEYQH1301601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6024e1ce0610b0471ce4debf0fa35baaecace3ee58af61573f682182e03534fa. 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/SEVPA1300201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa503c7d21da017e3607d6c9ac158306564270958a56b39d98b92d1e4cf24f4. Chain 2 (Bitcoin): anchored in block 958091 (2026-07-15T03:17:03Z), 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/SEVPA1300202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94ecc67d47fd3749ea63703e47da707c19827d3e143f19be63a73b14cd06a906. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/SEVPA1300211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83d5187b91add519e799182be4b202a1fbe4951285fdd580be7f9ccda60e313b. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/SE2ZP2000101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c7fcaaa84404bfb7deeaad8fcda02cbaf50b1d65ecf1abaa98ca47e3851de0e. 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/SEVLW2311007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9a876ca4d2f08515f0a103fa506cc5b1d27fd65a8507ecaa044e7b5d5a687cf. 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/QMDA71596736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a10300aeb58f2d5f17bfc811d8dabc381e5687cb5dfe46dde67f93dfaa33f1. 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/SEVLW2310004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451b1f4f4275bda02e8dbefea0cdbeef8484ba8f3589a16d81da99d766ceadce. 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/QMDA71564142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8ffb5f09fb802263309427e3506dc0e38654ffc78be93c52e13374c872671f8. 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/SEXNI2400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00acc4ba3e3518aa005900d8cd46ceb2529e0b41b1f6702b495864ac63d74f2a. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/SEVLW2311014.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x041380f4374d48065ac51942a2eecc3f42c2f32e1d048e2f935da0cbb32286de. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/SEVLW2312002.