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 0x98f7313afe1cef15721dd4f255f1839b7f6ea7cb42f9072435c6b7f695258cf8. 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/1f42680d-7b2e-4ca6-ba00-177784567a6c.json and https://artists.proofprofile.net/proofs/artist/1f42680d-7b2e-4ca6-ba00-177784567a6c.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
My Father's Smile (Magicamente Jazz Trilogy)
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 0xa84e1d5170b0a727709cbdd9f8b6ee4949dd5ac8dad3ae8edeb283c5986c8239. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/CH6542208495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x438b3590acfdb9c51a6d8ec3c68f13245eb5b9088e6630341ed5a3a611eb49ea. 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/CH6542208502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe796a43385721103d96e1e945dfd89861f2bad5e29822268c2c7f3976d572db4. 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/CH6542208504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1352cbe966eb77247c13be8962b26e00f7ce446f0c13022a7c97ea9241273236. 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/CH6542208512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b2a0c25785b3ad73b4066816830bd5289069ed0fc1727c64468818baf459079. 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/CH6542208518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf46de70bc558300d81028fde7677b6272de87a3486e6d65659526f84d573482d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CH6542208519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31d825fdce7b8ed92ae521781f836ddaef32310e04ec96f6303a80b284ea68c5. 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/CH6542208525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b3700c67b2dc1d98362a12b2b7f30b60161ab9ff0f686958227add06cc77af. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/CH6542208528.
Klaus Bellavitis: TRILOGY (Volume Third)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x278e092fa5c637eaa9104b427161ad771aed2d153aee16c5052e087721144b9d. 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/DEAR42264747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2377116f137657c01c87d8e02e08a015d6ccb7ae24bc35174ae2e4bb9762d59. Chain 2 (Bitcoin): anchored in block 959163 (2026-07-22T21:03:38Z), 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/DEAR42227464.
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 0xc0e800237a5156c750a6bc552f1a47e59239493da8857142881852923e6f1210. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/DEAR42253736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa9922c390c9a1556392549b687e19d5b6710e0eb511d2ba1b67c38c32258714. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/DEAR42248611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf005a42861300b7f7bd1183f05e2500b402e3def3a4474e0fd1cfea3a2383e4. Chain 2 (Bitcoin): anchored in block 960354 (2026-07-31T05:48:18Z), 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/DEAR42212730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31728648a4229f35b27bc922bc1e2e01770f1bf81ea7a511229d0c838fc04201. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEAR42288441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98fba4587accc14f3c6a3bd278975a4d15fa8e3ae5134be8a2b7f35517b64920. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/DEAR42275566.