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 0x531407d8fb141d9a82fa4dbab62a6266a5266188eca748bb8e1e7337a11d79d9. 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/73b01683-d0f7-40cc-8544-f1ae6f963713.json and https://artists.proofprofile.net/proofs/artist/73b01683-d0f7-40cc-8544-f1ae6f963713.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Kpm 1000 Series: The Big Beat - Volume 2
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 0xb9db3a7d97b10ff43b239901078670fbeae067128983b314db04a90096288b3c. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBBGL7000407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb0b1a6c4ade4320dd86be28bad9384baae50486d7c30a9a8a148a3e778c030. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/GBBGL7000408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd717ee7cd3674c24b667a47bd7860b4d2b1f4f696c640a4bdce01ea6b0cecca. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/GBBGL7000412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6779b7fd0eda7be1cf2bb5b5abe4d61f1072d7e9075374172d898c9784137832. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:20:59Z), 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/GBBGL7700273.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd6e80fb8138bd8a3acb009625691ceff4db8d5dd2a7352761353f234bc6249. Chain 2 (Bitcoin): anchored in block 958501 (2026-07-18T05:33:04Z), 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/GBBGL7700275.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70cc3865605f57a5bca03c24926fdc0f309816b8cb54c4678e38c1f7696251d. Chain 2 (Bitcoin): anchored in block 958885 (2026-07-20T15:42:24Z), 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/GBBGL7700280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcaf7c408b1ed2b9100377238ea1602d8a888ab903d631813c7d62222cdddc13a. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/GBBGL7700281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaefa68ed6ebde68cc655d1564c8be0f5e74eefebfe67b5c5e362deb76333a34e. Chain 2 (Bitcoin): anchored in block 958558 (2026-07-18T13:44:16Z), 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/GBBGL7700283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef7b560116af4b13faf06389a8d0e116fa0ee82f8f06ee44061d6fb437397262. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/GBBGL7700285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730e707aa400a51c3416480b5ce20e5614664edf56e9e21edee9846bff527ffb. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:19:11Z), 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/GBBGL0801152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0366cca1e582b5a3f128124f89a4fec85df82fe19c203726171ce0a05b89991. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBBGL9300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0366cca1e582b5a3f128124f89a4fec85df82fe19c203726171ce0a05b89991. 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/GBBGL9300680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27304ad8065aaf04264758d2dd29ace5913c06807c8840dad2fb5139fde8bff9. 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/GBF2B1000213.
The Oscar Brandenburg Orchestra Volume 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bda7d71e8640091b4474c106bab5720015d5cfb817a2e30caf081b07c5b463d. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/GBBHS7100019.
Music For Dancefloors: The KPM Music Library
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5b0fd5b8a23f86b15446133ca8000f8812faa659a86c8c714f9d883aed88160. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T09:10:01Z), 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/DEG931390732.
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 0xe7f53d6e0bb949e7d41641e039a884ca4fa72e918abe7208163dbb8951880a2a. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/GBBGL0902414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f8128ef64199efdfc7d01235a2f9fb22b14a141b45de0bc19d4e02bed68f843. 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/GBBGL0902419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd861f61ed7f10c6f0c773b548beba4b928f059191b875fa9aaf9b344fc053e9c. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBF2B1000601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x546d6195fd971b22d84373f8417c6294a516c741f6ec6cf15182f811fb9105ce. Chain 2 (Bitcoin): anchored in block 960284 (2026-07-30T17:23:26Z), 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/GBF2B1000602.