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 0x6bbb78d6453c6bd1855f51be5964553f8ae79e4c44e3f2c50d6c221fffd44af6. 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/1c398cf2-0c76-4576-ae1e-284429109586.json and https://artists.proofprofile.net/proofs/artist/1c398cf2-0c76-4576-ae1e-284429109586.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Tell The World (Expanded Edition / Remastered 2024)
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 0x0200346423c2cc7b9b4dfd010eb1eac689b5c49938baea2d7d0b52d564d7415c. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:41:31Z), 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/DEB170004493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a53658dc4fec1b34e46716fdf0eaabc2db99e6e554fa3978c0c739fbed8c708. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:31Z), 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/DEB170004507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a6616a2ce256e0437b3b785ccd8c23a1bf4d53b0c4a603d6f77b3c8b2985c0a. 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/DEF709000016.
Medley: Juanita / Peaches On a Tree / Hello, Good Morning / Mary / One Is One
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7e2659d3d38153cc0091f1c9dab79a6525f2b8332cd71c6748ed1f21c57e553. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/DEF709000194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x407ddba71b9d743123da9a41df014b8319932c8e7b584ea45eb284d849a9b1a8. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/NLE871544801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24bc517b72f8b7a730c70b98e7c44de07ed7a8e38893922deacec3488bf20989. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/NLE871544805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d34813bee0614f1741d02702b3b9de1df48f26dc74e3a512023a72198b2e74. Chain 2 (Bitcoin): anchored in block 957531 (2026-07-11T06:55:18Z), 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/NLE871545115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc653a8728271d73f63f35741c7b0e11d95c31ca1344f8bd578fdc7c103f891f2. Chain 2 (Bitcoin): anchored in block 958654 (2026-07-19T03:55:30Z), 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/NLW2R1719453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5aebb3a43ffd2db5b97e00133383262cc89d9f1742c9cbffc12842f7a6a055. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/NLW2R1719460.