Isobel Campbell (born 27 April 1976) is a Scottish singer, songwriter and cellist. She rose to prominence at age nineteen as a member of the indie pop band Belle & Sebastian, but left the group to pur
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 0x39c0a140307f285fa2443e179da9136e938977a6b22ec651cbbffaea71943247. 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/1327f571-ecc8-468c-822d-e79f27b1ea92.json and https://artists.proofprofile.net/proofs/artist/1327f571-ecc8-468c-822d-e79f27b1ea92.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 0xc6a5356f23b68e0e3b2885d44a15fa64ec2323f2d745f8782caf39cec372d895. 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/GBUM71003566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31f7b2804a2b61bb06e1ad2ceb8a27ecc4596627bb18cdf99196d8ea04643b94. 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/GBUM71003567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac60d5c9278f37bef6d13ca5d187a24f4ac8eb0bfb003dee9cd9b0548c346b70. 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/GBUM71003568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe101489de1ea1f7df1afbb396ff7f729658e905b2c2ee18c5afc56dc773676fa. 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/GBUM71003569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0f8002f17f5743faef79ddfcddbf1830a9a20fbbd127dfe93a86d1b33c10335. 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/GBUM71003570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8044282167f5e3a0e2795f5d28c99e538ed2f7f1f7019bc13de03f76a6a73f08. 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/GBUM71003571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe4b95014e6680f665d64847a4d819d64167fa18930c50ff5bba91fe7b93f86c. 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/GBUM71003572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4de6754943d2f1886cbac4975288eb4aaf38680ba1d1f78044e3061029fc2f7e. 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/GBUM71003573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb1b800d0ac9ee72781f244c848fc54e4aa0f31ac10a1248b903b0e86a5ddf47. 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/GBUM71003577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x690ee5d2f35e9ecd709c5603cd4b4fb130a3a3210c9094ecef6b7a57ba11cd68. 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/GBUM71003576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabd2bc82528c3a208ccda875d202d15c0791b785addea2889ff1540da278169b. 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/GBUM71003578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28b3cb9ac98a202ca7919a35017814bccc9ed2411ebcca8004e584205d2d6008. 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/GBUM71003580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25290f6567a38101564d82db61f2a3b1b8256b35d2c6989925140d3367809df8. 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/GBUM71003581.
Black and Blues (feat. Isobel Campbell) [Live at Hollywood Palladium]
Sunset 666 (Live at Hollywood Palladium)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7eab0478f81fdc0023db0e232c961d788dea3c76a5faf808860d2cd68149ef67. 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/UKRNU2100795.
Sometimes Always (feat. Isobel Campbell) [Live at Hollywood Palladium]
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cda515862d6d600347b7d23c63c19d79f4c221f9ec4c6f0f31a81e1f00a434a. 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/UKRNU2100794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e449633afc1b2fe0f9a5083255e6848c4c2275ef0630b1731eac20904518f4f. 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/GBBLK0700447.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6c183a58f6460216cf80263a2518be8100af52c056252133fb7a0e9d196fe84. 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/GBBLK0700448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2508b19a6ca520e59633999e7e7d83c870aa2c57cc7ef19559f895e90a4dc03f. 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/GBBLK0700449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fee7f7518775e0ab540538d8dfaaa145e385c9f32ac1f1d54ff008ebc4db04. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/GBBLK0700450.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee2b60090587d1049df97a18d321c95538af17822a7ea85bfec31344869d3d1c. 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/GBBLK0700451.