1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x9fe763721db6a6ddb9b1c5181ed8aef2d270eac13f17d4e9dd0100f961f4ebc1. Chain 2 (Bitcoin): anchored in block 953699 (2026-06-14T22:00:24Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/5f458939-108b-4c4c-8df6-b9b25321d6a9.json and https://artists.proofprofile.net/proofs/artist/5f458939-108b-4c4c-8df6-b9b25321d6a9.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
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 → block OTSBitcoinBlock must exist at that height 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 0x53aa9414c5e0ec53fde6800dd8843596f4a46dff47bf620d766b69157e38e3f1. 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/DEFS41100849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01a96e9bc06efe31a09e391202a757f02cc10942f9c860b8d98b20a70cc4e10d. Chain 2 (Bitcoin): anchored in block 958342 (2026-07-17T03:24:16Z), 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/DEFS41100837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46e99823b22867302514308cd5025a4ca74ad97e1fd5bfca65e8da6ca5e642db. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:13:01Z), 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/DEVD62500026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x181e3c24abee41da2b920639e25b1228cd3e5508034af5711f76998f2f12cf13. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEVD62500027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60bf4190447725e049f1a568542bee58623dd9335723a2c67c33a65fdc03c570. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/DEVD62500028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7aeb7ec1ec0c47fcb45c069e9b8ebd6835af205b6a45e493425d1eabc88b151. 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/DEVD62500029.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb444c40556c017184c29e71d89576e512d8a23df6e3c9074b37ffe6f02457777. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-17T00:58:33Z), 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/DEVD62500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0db2fba542a62eb274598c6a42dd352d4a6ef169af1a12ba01c2b6b01ebc6c56. 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/DEVD62500031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd90c4b5ec4965a0b664a1c5d6c5ea5ee47db12bdf2ccd4f2a94f97fc1ce9e9e6. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/DEVD62500032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4dc2ca22feda736f7192eeb82211068361320eb7b8ea5b045e0adde2cfc52c5. 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/DEVD62500036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656e69ea397b085c6e59e419ef68415b1e5cf727ae469276ddd6ea93e124f1ea. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/DEVD62500040.
Female Punk, Oi, and Ska - Oi 2 the World, Vol. 3