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 0x98552841a61711ffa12beac7d5c6264c6e5e90211bed084856828f6727acbb18. 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/0d0543fa-505b-4bc2-9b8e-bc3b5b3ef922.json and https://artists.proofprofile.net/proofs/artist/0d0543fa-505b-4bc2-9b8e-bc3b5b3ef922.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 0xc69c1760a310aaf19cd58b30a9a732e10d8cc3bc86751c11eb05080b40626426. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:01:25Z), 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/GBMA21958574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1e0c465c1397cf61585126b11101858288515afd56904bcfee89a4ba0dd55f2. 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/GBMA22013614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19add59d02289cbbaa437ce7d4da2c93c26bd5ecac6657f654160c7d0f330546. 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/GBMA22022468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585c95e727f0050c9cadedd2706d355093c52f63ba37502ccadadb0f35af4a55. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/GBLFP2134803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc650fe002f63130c89bd136e5d56d0c110d23cc126425afa37f75788a537424. 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/ZA56E2102368.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c95b66e30a020fe3344e277967929451983180de03bc3a45b5edd28c7d4175a. 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/ZA56E2102369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311c2f6b955790eebfe3f947a866a1be547e6abbcc50ca5c15762929ad9e7a3c. 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/ZA56E2102370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x230d0948a6cda851c2f494cc4c8500eaa3a1e91dbf5cfe6f35fa011ebdee44f6. Chain 2 (Bitcoin): anchored in block 957888 (2026-07-13T17:43:59Z), 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/QZMEQ2204651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x155aedf46d568049fbe5217f4f677dc8f141089483ac77816134664426738ba4. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTAX2204885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790c439149dc0d20136fdcbee5075d84349d0b4f473f5f6790023705a0084a2f. 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/QZTAT2360885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd804b30ff49d7a3ee799e9329247c1b9247ccae26e7afa410fd0d3ce8d85e18. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZS7J2326723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb08dbe749c87aa6e49b68618d5b029b8748b3c73d353031d778aab6e8357ad36. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZMEQ2433310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c6163b82254250a5f1d3a562def0912d9904a9a0c9254a11c6832c7965b7b4c. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/QZNWR2492328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56667b8ed558b5dbb28e91469051807a40363b6d2f48d5114df83b8ca61ce7c2. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/GX7852400638.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ea0a24f46272fe7e547da9ee9e7dd369db529997616bacaff78203e5e62707. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T21:55:23Z), 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/GX7852400639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6039f27cf2d222974cb072d8be56fea7c82c187de7727d5098c4e11ef966cf9. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:16:11Z), 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/GX7852400640.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48f09fbd78e7b68870979fb84e595316dfba2881830f4d300261c932b6cb2458. 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/GX7852400641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1d5274d68260102cd0b8578fb7be06763e81f50d16f1905c2ea8f11230481bd. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-15T23:57:52Z), 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/GX7852400642.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7536ca56c4f01a91e1695b46acc1c3b2ccd7c7ba569b86d27903282e1ee4ec6. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/GX7852400644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17ff73c87ebdbf189fc1d6595f0d11f31e475400dc4b7bb56c2c56c81c5be4fa. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/GX7852400646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x509d89f16e5a0fd566a67e1a6f09f683ba02829456b0a022fc781c5b486c452f. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:54:37Z), 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/GX7852400647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f91dd7d14e3bd37ea3e21679bf104c256328c15dcd7d0816649f767fc95acbf. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-19T23:59:51Z), 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/QZK6L2504813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13550b362e57ae3733c64605b1300d82dfcdceb73de92d7bbea89466551ac26c. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/QZNWT2507320.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3f38da03ee259ddbef4ad0d2da2a2869677d3626acacf1dcf1b0f498c4b253e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZNWT2507322.