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 0x571b38da343c066aaa236aab62cc36c8f8b435d99c468f49d09f77b55d3ffaeb. Chain 2 (Bitcoin): anchored in block 953936 (2026-06-16T11:24:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fc1fba0-acf6-4438-ba92-8099ff276e5e.json and https://artists.proofprofile.net/proofs/artist/1fc1fba0-acf6-4438-ba92-8099ff276e5e.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
A Jazz Celebration of the Allman Brothers Band
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 0xcff5aec3907c1fcbd84e630726dd2df7c3b8702ee4a6396c5b3b9aeaa734acb5. 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/US27Q1947401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01859cc0be1be1366b2bc896644176b05db5a663560ff728777bca2457288101. Chain 2 (Bitcoin): anchored in block 960199 (2026-07-30T02:30:29Z), 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/US27Q1947402.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0c62ea4409add10bb054a12006ee0c11a5eaf253d3fdc5e393aa809aa0ad733. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/US27Q1947403.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ec3ed39af7d8bb9d3072ae0e7119d7c509b1326496dd06a129dae40d3d6293f. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/US27Q1947404.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0648a4387d18b8135662e4a2e3bd47765ced4fd2f29941d61fb80192cf32ff75. 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/US27Q1947405.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1e77f8c90b9fce3d018022712b00e1288df8b22f5dd8ea6e05e6371c186af79. 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/US27Q1947406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7df8bd0992b3397aae1cdda4866d69ce609c12f00fc28cb671ca2d77508b021. Chain 2 (Bitcoin): anchored in block 960193 (2026-07-30T02:05:19Z), 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/US27Q1947407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdad11060f27246d836438be6d8044ab921726ba0e6d61768e89bcebb8106c49. 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/US27Q1947408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21af992bc6a9894c36bcd21e4a57714f12a4eec35ef7ebee4ba51c33135724d6. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/US27Q1947409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38295e050c9e931878fb1ab4b760a148ebcc6cc917afa571e0cd0a36c40789e8. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/US27Q1947410.
In Memory Of Elizabeth Reed / It's Not My Cross to Bear