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 0xbb60aec3ff1abb38bf4368ba1d1615a02c8ca0012b2576dcbeeb6a72cc4064ed. 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/cea44071-a98a-4660-9d5a-9d4e4e78b9af.json and https://artists.proofprofile.net/proofs/artist/cea44071-a98a-4660-9d5a-9d4e4e78b9af.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Pat Reedy, Ronnie Aitkens and the Longtime Goners
Pat Reedy, Ronnie Aitkens & The Longtime Goners
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 0x4153994a5e259757cbbef4b1f8b656978562f6e7d3ca79be37d0a6e94c72f653. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USCGH1485343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe88afcd5970abdcd4bfb72aa6cb6aaff82f3fd06ec62d6b481ceb1944cc57394. Chain 2 (Bitcoin): anchored in block 958942 (2026-07-21T01:41:35Z), 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/USCGH1485344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e8b55d0ab15adb3a124bf5741f486b4e40b417ff6c750c645a2049a6f2c34ee. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T21:49:10Z), 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/USCGH1485345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdfb99aa2122f5ebf089c7ee097c41982b81479d2d1087419e4892c94638cdb58. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T11:21:54Z), 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/TCADA1728349.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3eab57b0dd05cbfa69f99e2b5a4d64cb8aa92f376ab1d429918d3548ce6dc2dc. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCADA1728360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0817c38f4b292840da61709b235056a475ef22c2554dfe5009bc5d756927406b. 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/TCADA1728370.
That's All There Is (And There Ain't No More)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3f647a845769284f02ff0a04ee7ee50ee9d0887a6163a810ffdb35aa24ee9d. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/NO28R2130501.
Pat Reedy, Ronnie Aitkens, & The Longtime Goners
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x488a39bb4446e4ffd5f1d99828ccb5e6c9e3c135c5e57f6fd4877823fd690127. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QM5M71800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd40658bdba967feb544a7346863c75f4941914ba4e2e481302a26288c8b074dc. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QM5M71800007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5798512e6e10598d9fd7a05556df76c0bb3a5c6fc1a00f694334705a2ba13e4b. Chain 2 (Bitcoin): anchored in block 959114 (2026-07-22T08:41:42Z), 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/QM5M71800010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0162b553c1698060c5fcc905a05e046ed72f80495eb9da3a0aecf4860664b938. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/QM5M71800011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c12876b3006e0cfed6980b664e71e06d49f376e5f6373fd2c8315279f92600e. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ8B2392427.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7374638a53d327690754d37fd1ca483f51dea8057ee380c765b422c4ad23ba34. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:45:00Z), 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/QZZ8B2392453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ad594e8e9eb56de2cc1509a1104f83c649ab3807f579881f784407cb9ae4f72. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:57:29Z), 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/QZZ8B2392454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6af73f2e8e897bc9d0fdf07a513d48c88a2c1c2ebf3092bfd56f356b30c693bb. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/QZZ8B2392455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe52f17cac106fa54ae4e2d33431341de4bc95bed1c58d25f44e811230cc0ed88. Chain 2 (Bitcoin): anchored in block 958491 (2026-07-18T04:29:42Z), 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/QZZ8B2392473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14da3327c4722a0d3e3710b80aad4ae649785a643d2115853bbae54e5f9e1f0f. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:38:18Z), 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/QZZ8B2392481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19637fb1f5aecad3ae9f78ed64ecf95c45eedb2cbaeaa62bb924a37d1cbd765b. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/QZZ8B2392499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16f4a9da45960125debf44061e902a6372ce97a30e1020a99db8ffde675b48c3. 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/QZZ8B2392504.