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 0x6cf37ab57a24861aeea6016e938e4fe12e25a173533f15456d9e23d405749a7a. Chain 2 (Bitcoin): anchored in block 953842 (2026-06-15T22:22:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ef1a1d2e-790a-48db-a817-c3a72e32541a.json and https://artists.proofprofile.net/proofs/artist/ef1a1d2e-790a-48db-a817-c3a72e32541a.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 0x9a51a8679f2f081138b13513b559707cf8591427dd57d00fee1311adc1cd3cee. 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/DEWM92111280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543e37d60c93fbdfb7df9cbf5c8922913fc3ddcda2588aaf46ba1fce01f84c5c. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:40:59Z), 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/DEWM92111281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8605a60a4029c70eb060ead4bec569687d7e99fa3f3b44f9298a7d0083c2c56c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEWM92111282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84c8dc0efc5619a499decb2c829df447fe965445b63fa74cc55ce623dd75b551. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:54:00Z), 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/DEWM92111283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20deae0de880a7b7284b3f045136fff2181b25f34c1d5b4165707780efeb13d3. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T19:53:59Z), 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/DEWM92111284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea71160ec41f5e3f6deece0d40123fe22f28dec1fb4a1945e291ed42f89dc212. 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/DEWM92111285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bb942f04a2b53b9c1589d0168aac6ee6d5d1b6ee6bb1a6c1e96072373cdc16b. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEWM92111286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x411c6473782464f7073b823b3869a200434134c72f00375e475665c1921edf6a. 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/DEWM92111287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ab29eed2089acbd9d61d32e70530821369bb4077d7d200a4831161f86eaf15. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEWM92111288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8098e9b09c83e3bc82bd2f35a20edf77c4ff6b18ba14f1c92d853ba6f56311d7. Chain 2 (Bitcoin): anchored in block 956742 (2026-07-05T05:07:15Z), 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/DEWM92111289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b3dc4fd306fadb2c52a19600261a1ca6b4c94dcab5fb715ec278f23e7ded04. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEWM92111290.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc281dbaea5708043cb175fd5a5ee2fcf5205a21a38aa2f3a16ac6f20666bc239. 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/DEWM92111291.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5302011e2feead0ac9ded8af91ce399c84c5f21a70be3026df6e5283b9255232. Chain 2 (Bitcoin): anchored in block 958216 (2026-07-16T00:00:34Z), 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/DEWM92111292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1096f6f30214f3a3155ac80509afc4d1d433045ade1298dc08e376d43a6e4a71. 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/DEWM92111293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1398b7a86bfefebb48ae00a2ab564e594dbd4e30606ed2015a53f961b59fc2. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DEWM92111294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0607ef1c1fbca1e569f1c7667ccbec4808d2fb62b25c03be0c47125a14fb8b3c. 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/DEWM92111295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25d16c92ac1d12abb27cab15ae21163027f862ee8c0fb83896ddff3594f4c046. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:01:56Z), 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/DEWM92111296.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41cd4f021dcfa743e5c560a1eb581e62556dc6437c744b27e6a9b947623b9be5. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:02:34Z), 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/DEWM92111297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc50a4515e04180dae1afd1a0a951446332f63cea9687427b6b3f7055bfc129a. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:07:49Z), 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/DEWM92111298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbec52c31a695aac7bf09ced0b1ccb7bb9e04002971a98c0c53150920306e09b7. 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/DEWM92111299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb393027de2bcc71b9123f5585fe0255effc03bb1bda5b8e444034ae0f6bd7772. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEWM92111300.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66d50be8a65bbf80a6afcb732c03ad0607f4b9dac0f0542d4acacf27e92c40f8. 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/DEWM92111301.