Rare Cuts may refer to: Rare Cuts (album), an album by Danger Danger Rare Cuts (EP), an EP by Bullet for My Valentine See also Rare Cuts and Oddities 1966, an album by the Grateful Dead
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 0x7a3ce3072f3d95287c01ffac43c012db46418382efbf63c498c4c667bcb927c7. Chain 2 (Bitcoin): anchored in block 953746 (2026-06-15T05:25:34Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a570b4c9-2221-40d2-9ffe-419cf68f92ef.json and https://artists.proofprofile.net/proofs/artist/a570b4c9-2221-40d2-9ffe-419cf68f92ef.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 0x8e3c9992dcdd8a5f6d079cb9545e266afa23b3c4a97015ae296428f9f18bb2dd. 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/UKACT1713191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x847b8f315b3f8d580ca6331517a9a72debb6ba77c7939e298aaf0932151315e9. 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/UKACT1713192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92fcefd44fa582e60b7bcc0b5206b502d9eca88ef086e4ae43a4d5d352013ff6. 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/UKACT1713193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47fb78cc22af4b8476a656de0dc954200c364d5f1135dbd102527e5e800b00d3. 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/UKACT1713194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20249617083cbd2d285aaed061d878e0e7af88737fbe6523277fef40ecca4819. 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/GBKQU1738023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08e677058054e0935a50a069f49ac6958954f74c70f97075f6a3fca47819d686. 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/GBKQU1738024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e8d86b2ecd5e4631652582c52bef2421893afeee14b4a63e5414e31f5ab1fbd. Chain 2 (Bitcoin): anchored in block 960376 (2026-07-31T09:09:19Z), 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/UKACT1932209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dfb227849b9446b24a89e21e16b09fc84aa698428d5b4974791ddb4433039a2. 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/UKACT1932210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x647acd894c1ac2b3c398267921b8dd030fcaf88f0554a641c9b18ecc01f907fe. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/UKACT1932231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x52e91ad249c0a894b230aa356569661e33ff51ab20b0ae1d3297fd67d88a181c. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/UKACT1932245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe1915ed18ea38bf9ccfb3a6aa412c2fc1f7929e0bc69a12d0234cd8fda9e205. 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/UKACT1932246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc017ec78890ba2838c1d4a31816c6b3b9b9e778551758067a6cd8503eaa07072. 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/UKACT1932247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff1b20619b825c9b0d203b933d54216909be99ab320912845213ddfadc6a7b4f. 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/GBWUL1685229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54f935e9480f50dd72f408e25acd73cdc920dd90bd07ae6f51009ce7684efc10. 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/GBWUL1685231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8854053a5c6468aac27eb6c486eaf93577c4caa10101ee84c2c46a22b4697472. 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/GBWUL1685232.