thumb|Gemma Doherty in November 2018 thumb|Morgan MacIntyre in November 2018 Saint Sister is an Irish traditional duo, whose music has been described as "atmosfolk." Career Morgan MacIntyre (from Bel
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 0x067ba7107e777bf74bdba369f827587cbddf6620f3cadf47590c75017e6f15ef. 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/4b57de6f-07ad-49b2-a004-48ac855c38ee.json and https://artists.proofprofile.net/proofs/artist/4b57de6f-07ad-49b2-a004-48ac855c38ee.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 0x8a27247b31bda7284f9b0400cfda7df5487dab7e01e18e7a1ac65c51752a4db3. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IELWH1500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f5c9d7b943420ad06533a22611167ba41ceddf5c6ba2c897e7a2b0a6c1cb61d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IELWH1500002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd87b9b5ad2a801688df3fe2c978ba76f2694053abe4485c6f974e159441fe808. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/IELWH1500004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd74b9a68556202f4c1625cba58b3fe6d72d452ef4f21ed55213f486ac8a4990a. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/GB6TW1600114.
You Never Call (James Vincent McMorrow Remix)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e46ba21bb0fc688e789a1babc27c5cc104d0ebad49f00d249e6c481b3af5fc7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/IELWH1800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa22f724ed35515a5aec074d8a6a9e48a06ad556a1bc9e9f2bf5ff51146bc5c0f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/IELWH1800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81b58ae911c815a393d5c9559cde522fe576911c8bdd3e0b988fa8a44f5656c7. Chain 2 (Bitcoin): anchored in block 958689 (2026-07-19T07:11:11Z), 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/IELWH1800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3afaea56ff8878603cc9c6b729e06dd7301990a7508a3f332664e6295945a338. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T10:12:17Z), 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/IELWH1800003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac8d92921d755fefe7cc0107b4a5457689283bf7213b231fe365a34ed6ebfb32. Chain 2 (Bitcoin): anchored in block 958991 (2026-07-21T10:04:40Z), 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/IELWH1800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3a6039294c2613dde0a4e5892e6682706728790b596491c894f90d620602539. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/IELWH1800012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f6b4fe0e9041176f3e5654c9c9179e547586d6b72d1f1d2cda2eb1b18862d0c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T16:58:47Z), 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/IELWH1900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bc3096cf3abe6c44d39594361e7003fa9d5d12a4a14ee063091e1ddcf5bd4d. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/IELWH2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3d7e203fd214b072fb159c7536644472c0b7158154e6d176f44d71b4081971. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/IELWH2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e30248e2d1dd99a75b8bea9625fc687b896e971ad48bfb0aee10df72a488c33. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/IELWH2000005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bc3096cf3abe6c44d39594361e7003fa9d5d12a4a14ee063091e1ddcf5bd4d. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/IELWH2000003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf08a3d5bc204290fbfc743903578416c851c25eecfd0466946f82c91fe58fbd2. Chain 2 (Bitcoin): anchored in block 958611 (2026-07-18T21:24:44Z), 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/IELWH2000009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c3d7e203fd214b072fb159c7536644472c0b7158154e6d176f44d71b4081971. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/IELWH2000010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98888a41ed9b3523abc0763aed0f239f12ad6fc4c177a9bf5c2df18a55c8088c. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/IELWH2000011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19feee33bf2b6670a960124f2eb86a0b186d6e98374622b7cb9a8c668590a239. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/IELWH2000012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ae9264c5082c20f0713c4a71b11f0bea74f0fb325644b24287f34df34c68809. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/IELWH2300001.