Fleece may refer to: Materials Fleeces, woollen coats of a domestic sheep or long-haired goat, especially after being shorn Polar fleece, a type of polyester fabric often used in jackets Horticult
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 0xd0170c98cd9cfafe3d22563e715dbd36db330eaa81dbe77ccb3b18f242db1330. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/af3f7455-4e43-439a-8c33-eb344918fe18.json and https://artists.proofprofile.net/proofs/artist/af3f7455-4e43-439a-8c33-eb344918fe18.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
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e418b92d9f2a2ac1aee33fbdc3afd6b3b3ba58a7776b23b18820be8c747d7b3. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX8LD2359048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffa27efcd1661f7033f66fdb017257e246d86988c4ed504a73ae9979fe873e2a. 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/GX8LD2338065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f74cc16d7cc6740d38598b5cfc3bdb366c874921a88a43b0a8758c7bc76adc8. 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/GX8LD2319251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe872a4b0e40ece8fa31dc6dcf88cb8919f6b65af3c744b9339a25d5f1e4c67f5. 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/GX8LD2380046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68fe666a6cc0534db65baa2346f819f464d7e27c8cf895f452f567da3bf48dd7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GX8LD2337520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6ea5dccf95d66e6dbce75ca96bf1f544696147cbe47c41292aa618ce90de47c. 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/GX8KD2368759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d18c6423708f44dbf93a2c802e6e79027aa6655ee33fe326f82b4d326c5212. 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/GX8KD2310177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2563163602d1d473caba74c21a093c8e355321535576d4d5ee42acca3a232da. 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/GX8KD2303543.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd02d9580f6f12fb24831caa5fa16d5b3a5e4c0de3d789315c6626a251d9b6e36. 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/GX8KD2376516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1df9617f8f4a357e91f55ff56782133c48dce4a41c56271a3849aaca9c903e53. 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/GX8KD2376548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcff494e688c5141aaf5bf179b6f27096aa136e8df61ee4c130d73636cbe41fce. 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/GX3HH2348082.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef178d971de2f456464ef81824bac9b67743742dbb559c891372669e3ef99f4b. 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/GX3HH2307171.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f088b9bc2a2232722f0810711b8d2aea8d7d750b8273d5b05eb7ee66a551c8. 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/GX3HH2395078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0cd502983a1f373239365ed4f76b11833c8e1c7191b4aa29bc4ecc04bffcfcf. 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/GX3HH2315503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b7d5ecb10aa973558a0fb9459067f63d3e62fbc6c28dece187eecbbfe246b6. 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/GX3HH2348709.