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 0x3cbce9bb67f4f0bcdd1151c02a16dab7e684d8c1754c2977848515381431dd0e. 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/f2e541ba-1326-4882-809f-cf4803e5e324.json and https://artists.proofprofile.net/proofs/artist/f2e541ba-1326-4882-809f-cf4803e5e324.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 0xc1b1b5774f6c2fd84a168966f5515378ab061380a3733ffc5cdc7be26d50e0e8. 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/QZTB72253080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10bbfd348fb4592a488dcaf6e8eae8cb63eb6a60b03223f26e6b9bdd9839b72c. 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/QZK6Q2302895.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x255c1e54dfd5e61629e145365a8f7693516dad9ecce7990ce5a721af7cad8797. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:28:10Z), 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/QZNWV2394141.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a0517aa4d5831eda77cf1afa1238a6cb64f1a17d74eaca18025c0aebe816987. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZK6G2399771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41dad6c079dda070b232cf2e96a54e0703692e895cc4e4bd67fba532bb4eb7c9. Chain 2 (Bitcoin): anchored in block 958988 (2026-07-21T09:08:06Z), 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/QZMEM2351804.
mourning the echoes of yesterday's promises
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b25d40ca5c4a351330511a1ae041b2e6879797277c3f39f60f8417e5098d246. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T01:08:10Z), 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/QZK6H2480888.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35f89ec1a4b527b1c1269de5a08fecfa6ff55684d8c3d62b9df14ef7f9091e5a. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNWV2419916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c312f8360de54edaba7528bf65f1b6bb2720e83b94380fa14e0fdd5df941843. 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/QZTB32419100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35dc3e5306d883af082c80bf9827e18afae6bcdfbf6c0b289d8fb9fff936a26d. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/QZWFQ2451210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7b68f66c84127a3ae31c95c1ffa56f24792064a9c271c74fad3641b2f59364d. Chain 2 (Bitcoin): anchored in block 957595 (2026-07-11T18:26:17Z), 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/QZTLA2578827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc48e086a41ebb9b65c0946b791682cb4a3433888c69a725d474b30cb90668c6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:31:15Z), 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/QZTLA2513017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4623a61fd711809af94834716228c2862bc92acb9b5f50fed7d08ae5a1d1c79. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:01:13Z), 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/QZTLA2554548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f7afb5fb9a67286fa3af6295f8c1ea4facad9c4646af3b4ba58d18e9c33dd9e. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZS7J2500061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0336120a1271a21145cfcdcb79ff473940525c1a0dfb09bf87306943f325e037. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZSYP2558919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77ee7147688998d0aabb52f254f469b97098dfe9dae84fa01334f9c90840c477. 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/QZTLA2551702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa21bb1b47ac8e1e6dce354c8fd2f4b251e599dc1d836c969ffdfa2edebcce3d1. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/QZQAY2561382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0e14b9941c2c57b3ddadf0ed5d4e5ce85a50d4586888816d75b339a422fb94. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:32Z), 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/QZWV32585528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe896a39fda6b7f92bbc943ece3cc5072beb9aa6d916c849985d6c76cbff87ecb. 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/QZWV32567764.