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 0x504b38a330c24a0e26855e052b1d22d82831477b3ca1df6c76873064ed7ebc36. Chain 2 (Bitcoin): anchored in block 953741 (2026-06-15T04:44:49Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/9eb2c604-42a4-44dc-b808-7a99edf9e098.json and https://artists.proofprofile.net/proofs/artist/9eb2c604-42a4-44dc-b808-7a99edf9e098.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Palace Of Memory Where Nostalgia Is Fear
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 0x59b7705536963195bdbb98c7283802c76c4e183d9f4acc72d71012d4be978e5d. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/GBKQU2216992.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe7147097c0f8964d311f0d13821f3e3d151e6f450e384326f12245882e23a0. 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/DEMM41501055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe81226d608efd57836a64bbe496149abc433eb08e3ab85d0a965be3f471592da. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/DEMM41501050.
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 0x8301716751ced9bd24b35f0e13dd562bb879c8138db7dee4e3ee6040d50f110d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/DEMM41501051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20795a9416c8e1dc4c647eadd2d7ee8e65722724fe42d93f8d494283d0007ec3. Chain 2 (Bitcoin): anchored in block 960503 (2026-08-01T03:41:24Z), 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/DEMM41501052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa233eaba0927fa49aaa1ef9f0523cb992fce4a9c326ff16ae7e3446d5c59c807. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEMM41501053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb0573b0d65ab8c9a7343e625c82ae7fa75f1a4108efe3964db1f583da22556e. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/DEMM41501054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xddb764076653b6ea4b98d30ee5b856cbc6b5b6d3291b78c7720bb38b67370d21. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/DEMM41501056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7751567690e9ff9d88989ea35b3486c5136d6626ba930634efdf84298fc389d. Chain 2 (Bitcoin): anchored in block 960513 (2026-08-01T04:52:22Z), 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/DEMM41501061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dd0466fd24f7fe1c3894a4744eb0d718e9be36f1b8071c7020c17213e22fdf2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/DEMM41901181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83ff011637c193c23899e7e8703f2e2690b3cb2a93d319fe0fba79dd7f8b7357. 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/DEMM41901182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafc9b9370f155cd124b14eb039f0b6cc29689e99e7e2bc9483aff9371ec4095c. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/DEMM41901183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4603ce235fb3d7ca17de5d0726565a702edb7730121465514214e052ab026e. Chain 2 (Bitcoin): anchored in block 960485 (2026-08-01T00:10:46Z), 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/DEMM41901184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9fc8db86d4d699e2f993686947a861341371bcf0fc0e17d66413b0fbe49e2c6. 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/DEMM41301303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb0b5ffa6464cd68d96e8de1b12a024510e3c86a20bf7775cd004bbc9c533599. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/QM4TW2505938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6269a44feb3065b50246ce908f48af88d048b010f1839f59b07a3733f0ae36. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QM4TW2505971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x188e5bb6684ef52c1dc59bf26cb491bc1c5b0b5d22d423b47dd2227300a3dcfa. 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/QM4TW2505962.