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 0x7517d79acff43715f97771405f09f0aeda7f7c8bf2a7f7c4cdbe0f6cd320242a. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/fd2c441c-3cf0-4756-9705-e88d63827740.json and https://artists.proofprofile.net/proofs/artist/fd2c441c-3cf0-4756-9705-e88d63827740.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 0x5be184e2561d0a820f55f037655a6195219694d38679c74b64ee0b60732625da. Chain 2 (Bitcoin): anchored in block 958397 (2026-07-17T10:29:45Z), 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/QZMEP2037043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24aa11e8802ed1d6979c6f7f49d63b065d931acbc2b677f1abc78a6d79004b2c. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZDA52109090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7d7084b1a49bed133d854adfd62b18c94675f5e23788452dd2871a8627ca852. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/QZMEQ2121526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b7d879d3fb94cea476219619c5ddbbf1b8ee09c0f53cbe3abfc5ab2eb8db698. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZMER2153161.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1226b2c7b4abcea1de76c9e6e52503270cbe9a3b9c794e033ecee440d6bc8199. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/QZNWX2154981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63c831f44173718728d86375326d3bfd470386543a345e86b3bf33c91db631af. Chain 2 (Bitcoin): anchored in block 958827 (2026-07-20T07:31:34Z), 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/QZTAS2136930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60db61f3ac75b514ea30cf73c645dd3db07ddc5df7e873753d3ec74ee75c807. 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/QZES92257363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0d21ea4d55515dfa2c26ed22c3106b6510ae78962e503aad5ea147fefa9e653. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:44:44Z), 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/QZHNB2200954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30cbaf23f55fa0b180f8719d0bf0938ab10d76e1fdcd18a785d5f45c8eab44a. 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/QZHNC2228722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9c911d4f6bd49723bd35a6be0fc1e4b3a7f6b8c356cb77bb88a9905d5ae9108. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:23:10Z), 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/QZTB22264103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77c71c30ac7311bd02840029443af90378ab2f57740398f19114d23b15b7820c. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:06:28Z), 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/QZFZ32306052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95b1fca5b567dd2958c58a04a0bde146961948658676ab0e19e1195745876f5d. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/QZFZ62384393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94de991a48a8927c42bfbe482f00755583876fd62b0cef0d087821efe8e8e773. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/QZHN32366002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4305ea14c40a9e970ae1ad5f8ba1e18ef55fe5099570a17cb6c3112159d326f. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZHNB2354359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe46b1c0c466333b867f8f4eb30bc4cad76f4e62e83ed9d880fce3ff3decdcb8b. Chain 2 (Bitcoin): anchored in block 958985 (2026-07-21T10:56:42Z), 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/QZNWW2324662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d38afd2720ee34e8f727da555f8b44013404d6130fb0cc9e3fc207c79ffc5f3. 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/QZTB72377566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbf12bf9b35019dd517ca909cb1d968f30ef26ad9b867d964a494747e2b6f1ba. Chain 2 (Bitcoin): anchored in block 957747 (2026-07-12T19:35:06Z), 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/QZTAT2472728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e36ec5b8a3f6874e35700c3d6c02e7b5f6012366edc3908d585ac23d21ce1f6. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:07:40Z), 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/QZTAW2421980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf56cd4cd1f747822a9bb6ae21bf9f869465d3cc2e048e062d39ea0b941e44d9. 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/QZTB62402844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6874d5da9c0318ddb1eeead4f0ffdcbe7f38e76c75ebf9be2cfe8c3d7d5f40a7. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/QZTB62402849.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f26f9fd3a497a798d0006db7d488dd2b6231b9be2afaae3bf4bc1efe7499033. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:58:53Z), 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/QZTB62402850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34a0ba3360143302c9bbcfdce6acb35ed00aa5511f40f258d14698f8bb10c372. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZTB62402851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x741eb5a8d6a51a69570027d385ec2e93a5704ab04ce44cac6cf9564ee48210f7. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZTB62402852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5bd4053c3b83cb01b89945fbeb3cae6d3715bc286daa1c20a039b3da69458527. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T02:08:23Z), 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/QZTB62402854.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd0cfc521540b6a1c5f3663b27209a95d5739844ac6f9cbef221fdbd71c9d2df. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:21:38Z), 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/QZTB62402855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6631f0e098399325d07bea4059d5c8b0bad6ee33a3b5cedf587d5675a5681ad. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTB62402856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xebde905547e14ca4c73634bc5a706a01a13eb5100d46cfe5f59d5beeeba2553e. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QT3FD2582754.