Peter Bjorn and John are a Swedish indie pop/rock band formed in Stockholm in 1999, named after the first names of the band's members: Peter Morén (vocals, guitar, harmonica), Björn Yttling (bass, key
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 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 0xe66df72a97a8eaa7c68f846168f2409e93a0ce336f479bcef67ac4bf1254f28c. 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/b70fc0a9-fa5f-45f1-94ec-0ccd73fd5d89.json and https://artists.proofprofile.net/proofs/artist/b70fc0a9-fa5f-45f1-94ec-0ccd73fd5d89.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 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 0x0c33801537c55fdc43e6f3c9d433df82b12be5af716279b6523d39f777eef52d. 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/SEBPA0600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c33801537c55fdc43e6f3c9d433df82b12be5af716279b6523d39f777eef52d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SEBPA0600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8aec5f253a05282c10540af95394dbb43d628af008c12331877b6f0e6b7d9bed. Chain 2 (Bitcoin): anchored in block 960321 (2026-07-30T22:27:30Z), 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/USA2P1552261.
Let’s Call It Off (feat. Peter Bjorn and John)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90e4fc03f2606dc8e14b233c54b5a95bb49662e8d92dcab24d14dfda83228c21. 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/USCM51900152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a499ca0729a6133fe01fa601121b749de05b64f66a2acc3077377892822f5ef. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/USBN21200521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc987fbf6b29e5c7f0e702780b75bdf6db01411ca167a56808f41f12bcb14f1. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/USSUB2258101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c33801537c55fdc43e6f3c9d433df82b12be5af716279b6523d39f777eef52d. 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/SEBPA0600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2613f580f9db290e24e5dcc3dc7e3ce81129dd607ed68c26ec0b7daf396129b4. 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/GBWWP1601963.
Älskar inte vi dig då (Hommage till Olle Adolphson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e8d34fa618f94627bcf071a797811f89d04855157f3e5d1f65a3acead675c0. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/SE3SA2202911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c33801537c55fdc43e6f3c9d433df82b12be5af716279b6523d39f777eef52d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SEBPA0600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c33801537c55fdc43e6f3c9d433df82b12be5af716279b6523d39f777eef52d. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEBPA0600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c33801537c55fdc43e6f3c9d433df82b12be5af716279b6523d39f777eef52d. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SEBPA0600024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c33801537c55fdc43e6f3c9d433df82b12be5af716279b6523d39f777eef52d. 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/SEBPA0600024.
Grey's Anatomy (Original Soundtrack Volume 4)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d9cfc7723a26a15eba4a6f3c89a89c3a2b1ea38ae2f3bf75b949801c553a154. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/USAT21101879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b2d2da829fb5b7c0064f75cfe4b49975e57d644e2f794c732f3790fa48bacc. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/SEBPA0600110.