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 0xba63867af16bce1e144c6bc312ec4112da20ce284a6a85cc804d350116e61d24. 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/4ba7b665-9a05-427b-ac8a-f7e93b6e46b2.json and https://artists.proofprofile.net/proofs/artist/4ba7b665-9a05-427b-ac8a-f7e93b6e46b2.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 0x8288c009284fea2fbba3841d463c01954d283e18fe1377323f09976e0ba67754. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/GBUM72206313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8288c009284fea2fbba3841d463c01954d283e18fe1377323f09976e0ba67754. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/GBUM72206313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6e505484434b08bf136f428425f23ea7c36091f3702cc2584b921051c343be4. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T20:03:27Z), 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/GBUM72300607.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fb5586859dca51c66b50a7fa94e35dd7af6f021e3f7ffbc731f451c4d9cd2e0. 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/GBUM72300613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f45731d84fc4dccb94b63a8df314302eaee9d3a535580eb82728dd7c6553fb. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/GBUM72208633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88bdf8d944ac9d48a5bf4ca71a05869c292708d569d01f3790d5386e8f08e90. Chain 2 (Bitcoin): anchored in block 959103 (2026-07-22T05:56:21Z), 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/GBUM72208637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8288c009284fea2fbba3841d463c01954d283e18fe1377323f09976e0ba67754. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/GBUM72206313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3218f86816fedcd0ddd534eb0a9905c77ba595c4f0648d12e695cbefc13e119. 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/GBUM72306019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f45731d84fc4dccb94b63a8df314302eaee9d3a535580eb82728dd7c6553fb. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBUM72208633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc88bdf8d944ac9d48a5bf4ca71a05869c292708d569d01f3790d5386e8f08e90. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/GBUM72208637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48d9a8a6ceafc1cefa82b2544148240142519c03ba8520e204907c589df22ebc. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/GBUM72309415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f45731d84fc4dccb94b63a8df314302eaee9d3a535580eb82728dd7c6553fb. Chain 2 (Bitcoin): anchored in block 959058 (2026-07-21T21:09:36Z), 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/GBUM72208633.
Something In The Orange (Live At The Heartbreak Sessions)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x336211fe5742b4e1bff483f20931303d9edc521cf63201967bc74046bcf9a82d. 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/GBUM72402480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x529f2545811a37ce74e7e0550c2a4c9638513c2c50c8d8bcaa37a31d04c0bdf8. Chain 2 (Bitcoin): anchored in block 958943 (2026-07-21T00:27:37Z), 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/GBUM72400343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6171f502f0a545b2581431a4f9a73dc6bca84c71ffdf35de952d63e35c228dbf. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/GBUM72400577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944948cc53ebe90b76f246789fb882eadd8fda6c49f607120e41fc4467403099. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/GBUM72406688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4057b46aef86fb39ad5b7ad36051b140060036d329f3b612239633aa521e2447. Chain 2 (Bitcoin): anchored in block 957771 (2026-07-12T23:27:28Z), 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/GBUM72502591.