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 0x34bd15dc8624334f02a48d02e3d26de6e16cd60ebf19050dcae496160493c855. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/58a0cccd-46b7-40ff-8dc7-50f74e35d403.json and https://artists.proofprofile.net/proofs/artist/58a0cccd-46b7-40ff-8dc7-50f74e35d403.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 → 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 0xe2dbd50db53c4a123691d693782d47aca36f4f62b4d1433e6db1892daf9c2d8b. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7Q2452906.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1ac35158edff2904686ef5c46995b24e477e03804b7b7b44d883447540522a4. 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/QZZ7Q2452907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75515064169bac888d8276138f71941a75b48aceb55c3a5ae46a35924f21ee60. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZZ7Q2452908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75934ee412ff529b91d4f3df8b65f1098c72ed350bc405e7253b7737e78055fc. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-20T00:05:37Z), 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/QZZ7Q2452909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7a976cbeed373b5c3e9594c9c21ae6d15659a3c35b70702db028afb695541c. 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/QZZ7Q2452914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e27204295a5e468db10760a000b7017c6724c66c91804765c8d73bc757adabc. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZZ7Q2452916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31129ac40dd99cd13fc7495b04d4181f0b2d2b5393ce297083503d44df4cf96e. 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/QZZ7Q2452917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b70ddd2465fa55f1e0348cd43ef462d6b4acf9006c24409531526b28c9042e8. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QT3EX2490161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93a5753f6ce63dad6d8d36fd001b6ef1adeabf77b035b5186a47d265bd08851c. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/QT3EZ2453132.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7a4dbaaf7bcc0a4fc8eb269ab442073d0fc67ab19bd963b28b3bb79b656aad7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QT3EZ2453134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb36639e0f7c80bf22f2ca1d4fa49b03b9b1b03eba019ae87b714fe225228b6. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZFYZ2567522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c5d3ae0efd8e8f7774fd4cd31093a017335f4b06f27c3ffdbc4188de3146c1. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFYZ2567523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb432de5debf350462a3c18828cc03bc4d56ceb324f72e860c135c433355d19dc. Chain 2 (Bitcoin): anchored in block 958116 (2026-07-15T10:09:32Z), 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/QZFYZ2567524.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c6b6047ae6ad6d1d76efb799cd2ba54e66a1d69fbab0854a2d59eb32c7bab05. 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/QZFYZ2567525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fbd6d375e57592c370ccb08ac858554129f5bea03fff009f299cbbdb99ba8b3. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZFYZ2567526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x827d73aab5ae589e7db1f37adfdfd5fc01764dd978608aa4cab8596b6d9d4c81. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:54:32Z), 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/QZFYZ2567527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1addfae7dddca7f52fd075fb49e9164edd9694af99909f9a2c7c3f6e9ed628fd. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:03:46Z), 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/QZFYZ2567528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25ebaa9173334aa78292924e039249834a658ea0226ac9e7fc8af8218fadec12. 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/QZFYZ2567529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3dc6b31b0810895f86022d05ad3c53a568560459644c1967a78c7cad1df2feae. 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/QZFYZ2567530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22515bdfe0466f9b571b6ec289e6b76fdf5fef95d1bfe38b9a6e3b8b742a0c3f. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/QZFYZ2567531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd316ff64120be31ffeb8333395e637ec63ad740c45723b6efde98b08818669b3. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/QZFYZ2567532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d143120bcfd4bed99eb47db2157adc4c6e9664b0a92e024dfd4c31925c85cdb. 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/QZFYZ2567533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65da2918d2e365918d80c8562c6b58d71d310326f7f7a8d8219ff5827be042cc. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/QZFYZ2567534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ccb8ec57311b7a63fc438567b47fe0ce63bab236b9d9527246948cd9388f971. 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/QZFYZ2567535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa0d064f171f1046d0f83ea27959cb48be7dfff2ddda6168add49acce103674b. 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/QZFYZ2567536.