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 0x63c655b16b73a53688366caed30964769bff6c43a1fdf4781d8e4e4480e12dc5. 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/456604d7-9ac3-4863-b2a3-0e65cb4c1ff5.json and https://artists.proofprofile.net/proofs/artist/456604d7-9ac3-4863-b2a3-0e65cb4c1ff5.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Peaceful Season in Creaky Medieval Harbor
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 0x4254c72a7c0103fe3c91dd78ae86f395828447d8b712c3233d1dd73031f7680d. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USCGJ2439998.
Tranquility of Creaks in the Quiet Harbor
Winter Night Peace in the Ancient Harbor
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5f238458032aff3cd3debdf1c66ad9bfdfae2eceb9722d0f7b32878a5edd6c4. 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/USDY42498853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fddaf173c5d98cde2ea2fb33db0a4eccb41e79b3ac21b4bdf16ae156e761401. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USDY42498855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e16935cc94bb8ff72f7c32bcb9f9f4c8d06783eb5675a2a92b236d9807ae8f. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-17T02:01:14Z), 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/USDY42498857.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b1a5ca0f9412fd7f442c34d8d2ac759c3edd429ba2910ba2a39aeb737d89cc1. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/USDY42498858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a83321486094b523550b9148e481672a1a5ecab6ecc36cae507a70d67640d1d. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:01:46Z), 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/USDY42498859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ce8d9d919562b39d5fa6872645bc01dc11c55c0551d54c3ebf5217821661ed. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/USDY42498860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb28ec17f3f0ddb11975215300c1de96947cbee6fcadad0e3c31146c82b62e3d1. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/USDY42498861.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9616954940167012762b46e38f473953b64c4b7253725735a88bef1c40042c6a. 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/USDY42498862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb16c112d8013e9be06e22dd76390ece2a141df36d0ec57acc856d85e02744ba2. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/USHM22477487.
Creaking Ship in the Middle of the Storm
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad06253fa99235afac4e42392fc27649b52e36ac0c106c07376f5548dfaf30cf. Chain 2 (Bitcoin): anchored in block 958268 (2026-07-16T11:08:01Z), 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/USHM22477493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x757a14b6ea4b0c8e40ed09bcefc9f890d347c824654e211624e94ba828b76504. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/USHM22477494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a639c5dbc95768a23756d78032b2e0da4853692962fad67bcb2655b2498e80f. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USHM22477495.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a2c3c0c02bb334c6b48f193b487186f5f50e16e53b43ba38e03c81b465c9cba. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USY242443717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34af4fbea0153ea0f3486e71c01ed8b0e8899f6789e16a2c95857666dd82e777. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T03:57:33Z), 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/USY242443718.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7765551e95ec5e2148ad5567be5402def9a9834dc970f834ee6867fd652e360a. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:51:34Z), 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/USY242443720.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9342e7a477f96153ca356cee9cc3db88bd328ce09dd7fd88be076f5188f214. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/USY242443723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd76b2b8c2330c4fcb33cb34e69acef497d9935689fb93c640b09ca1eb4e6ac89. 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/USY242443725.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x363c021e7515e48ca36a8bdafe0c1f68042b3c4be653a807338417d6f7e50508. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/USY242443726.