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 0xa74f61306cade6f2053032e8e3774950b66324503bab7de37946fc1d3b7d2843. 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/960095e4-0d6b-44f6-b69d-2c4c22de9c35.json and https://artists.proofprofile.net/proofs/artist/960095e4-0d6b-44f6-b69d-2c4c22de9c35.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 0x039b2ed026679a5e36deccbe091ab0f2764b6e938d595123ad2786cdcb62b6e4. 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/DGA062315017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc92600d5a66ebc254361ab3225546f8ab3a24b85c91b1523dfc25f6e5ab87a01. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/DGA062315025.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7572ab264a5ff17696780226a072854ab731d6cb9f5f843580b530cc1479a069. 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/DGA082385272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cc2aca14bed0810673d7afcf2d3442470e6ae9681a23acf9425caa6a0c3f9df. 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/FRX872453356.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f2e6c0e77f5bf9cfad6f509637a0822c9b2b001af1209a19ef6684859498066. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/DGA0M2423278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18fc7238ed36631929b0153f148a2b447e67b84c041071604c12a65b55172160. 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/DGA0P2443173.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x037645536ff7344d31ea4ccfd10cf69cf1e4b151e6f89026fdc45a81687e24c6. 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/DGA0S2457332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3675ce963a391269b2c622aa43b5cb3b4d7351117a15cb90b458feebcc58404a. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:16:43Z), 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/DGA0T2419037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9149db5f356161fb49ab8e2a5349ca22a094e13420b2a9c703f765f808975d2. 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/FR10S2507980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fb88abaf86fbb8bade5aa3b34de4b89c4ba472735dfbf32625ddd22f7b045ec. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/FR10S2507981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11908d621313970d1455aa03c366a59115fe1a60a7f73df6209a3ce61fb345f2. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T04:30:31Z), 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/FR10S2507982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4da10861576ed3affda65f98e70ad9a01e284ac53ecdcfeb726be4b863e8cf2c. 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/FR2X42532249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e5472db37ef2097f491cfe946088d333215ba5821635722a52ea0b49f512e6. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FR2X42532250.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7e053bb3cb26d1142a7321d91570457e264af4c4cee44e4ee96b86dbb8225c9. 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/FR2X42532251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1b3d69afe74d06042959793ddd3e3f43ae656a8609cdb1f982e587e82baa38. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/FRX282521507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x245e68054f33d6822f7294dab59e2b2086d15799a1d890ab2d50e53f6bc07bd5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/FRX282521508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cfb867eb0b6b0c60bca2c419d3a31cec93a220d46f06a4cdfc325b94d7db49. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/FRX282595683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd251fbeb220956e70d6cb0d69afa871508b58b57a93b88075bbc5199fe4117d7. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/FRX452530528.