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 0xb6ddfee5ec35c11627665ce319b1bcbb58f0ba947885a80b57519c8ed27b7bfe. 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/370fe83d-f786-4d58-ab77-a1fc831dcfd9.json and https://artists.proofprofile.net/proofs/artist/370fe83d-f786-4d58-ab77-a1fc831dcfd9.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 0xaa99c04484269e82af44db6036a90f573527984b02bd0b64c93fdda1be7d956b. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR2X42314177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc60b8e2b6289aed460736ffa880baa1dcadb73264b63a2c5d685485c3a6b4b7a. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/DGA062484938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe90a1285ab3f599519458821845dbc3b94039d29959ee8579de24b15cc90f73. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0R2434852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b03a1495975a72e1d293708cd35ba92f3801a957c22b51d99fe0cbe65b6cca. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0S2444583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3be598bd1cb64103965bc7818217a21a245e95ed1ea3ce4b13cc08d1d5c5565. 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/DGA0S2445081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b03a1495975a72e1d293708cd35ba92f3801a957c22b51d99fe0cbe65b6cca. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0S2444583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa03778cd20e66596eae56ce4785cdfe30781890e1912f738dcc8ae12c1e8aedb. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0S2445101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4848b99d19594ecddef9fbb5ec7a90bbd0da010cec7a88c68a75445f326d94b4. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA0R2490841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe90a1285ab3f599519458821845dbc3b94039d29959ee8579de24b15cc90f73. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0R2434852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3be598bd1cb64103965bc7818217a21a245e95ed1ea3ce4b13cc08d1d5c5565. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/DGA0S2445081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef3b1b869eaae9f0a6059b4aed6354636135d78c2c592555978cd85d35f07968. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0Q2431011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c07f9338a0c30c604a03b7d02f60f6a8b61d8a2e4b19d2d19b71a112d0168c7. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/DGA0P2418480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6802c18cf49e396908d32707ff2efa2af7416f3e4f93971210a265caf434e2b0. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/DGA0Q2415529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c0c70780ca20a548eff3b969983fd8b579ecb64353c6c5bd7069f99ed6d0a7. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0S2445365.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80c4a5d4e94149cf96b3a6dc27dcd5fbb37702d7b9b158d13a8997c7fd917edc. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/DGA0S2445366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59abe210ee91158dc8197761c44c5126e6171c4f72cc00fdfc77e46f7e6836d3. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/DGA0S2445367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141755f0f4eceee943bd0eae4b09d62090c69373e05c3d89e8a573317b082880. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/DGA0S2445368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x513e0a0394fb7a6e2de7e0eba2fb460d3e7ba492dd3475ade6ba9d17806d59ee. 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/DGA0S2445369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d922fdbc4efa9c0ecf4af7ebe0aa723b671cb1071d3c60c87224d25711866d. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/DGA0S2445080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2307f2bf397c96038a34038409f0506a184834a902f5d5193df8072e83a06dbc. Chain 2 (Bitcoin): anchored in block 957874 (2026-07-13T15:43:57Z), 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/DGA0S2464915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e5cff0dea0dc6382651f81b875921285ab72a7558d4574a77584547e37be633. 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/DGA0S2464921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x712e1d634bda03a06957f1cdc77d85626d549522e54cfdbdb15d4616752bcaf6. 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/DGA0S2464917.