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 0x26a43914b17b3dbe5e4bb52fa4964cc852c35bb47992dc88086ed019f4a3cac1. 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/b7f84428-afd6-483c-ad8a-fe53f9505588.json and https://artists.proofprofile.net/proofs/artist/b7f84428-afd6-483c-ad8a-fe53f9505588.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 0xc0ce40e2948c261ca2b408c691b37c0545f4c849451c876cda33ed1c24fab02a. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBGD1790078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc337c1faa168f1a44d51ceab76ab3dcd76b40b72718d63f35a798c37351a69ff. 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/QMBGD1790062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3222c48aa883572954765faf9425b48244c7ceb1c2e9e23320ac54ff8b2ac1c3. 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/QMBGD1790074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c71a2c24ee0e9c89616f0cd062c043ce0695844b81142943ae9e8f0218cc9c. 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/QMBGD1690061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed035989fbba10cfeaa69c5efd1b049efb7b755a3f8f6eaa5f577b567db442b1. 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/QMBGD1790073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29ea56332afed6d42901fa6ce16f8eaceb8136ff784d432b61d1b9a10c124ad8. 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/QMBGD1790075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d8307380d0f146259caa894ec8524ab76c5f4d1b087462c603701d7c842d56. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/QMBGD1790077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6cce1e9da9d4f8ef39d2b90ff16a262d9b545b5a1dc5a622c354ede177ccdf2. 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/QMBGD1790076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf132711b329cdb9b9771d599ae871a62db0be5dc7c22515b4659ad01aaf7fb58. 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/QMBGD1790079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeff95cd79fadc568f8ca214d67d8e0993bda73f773c69f3ad1b731a91c1f6ba6. 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/QMBGD1790080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe79edf1815c36315f9b3c7174e3f607b7f6bc32d87040169a340b0a4ec85e203. 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/QMBGD1790081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0265a70218faf8f7a04e3a188f5f777ecde0b5ecabc1ba8677f1db8e72734cf6. 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/ZZOPM2110044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896960646996bf688fd23550d40a1f70c7527c2ab8b6482b73f602a657ef6378. 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/ZZOPM2108715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x917921ed7f19783846f8db3a749e98c64cd1a7bb3a0f8cd571323d464eff1b82. 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/ZZOPM2110045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcb7beaf2da20e9f371e1885d28531c932133f21f87f3826dfdb4dfa081bb8ed. 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/ZZOPM2002134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cbafc3ae25d776d6e82ee66099669c41cb6f38826dd97acf489cd255032f191. 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/ZZOPM2002133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa060a9ec6e3315beac3f1f6c7ef8bc9f9db5e0fbf865359e7e5123ccead65d48. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/ZZOPM2003155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bb2ac59907580feb2da176bf9a3199a1c8fdd293bc80a2b3cbb685f31b433c3. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZZOPM2110046.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0022baab0bfb8a8c1189bf87cffd37de909bae79dd0cb011feb5ccf7314ebedb. 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/ZZOPM2110047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0add3b8f42d1a60baf59f920f4bfcc4c5d844d58b616a80c404371d0999713d9. 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/ZZOPM2110048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4c1abf5bbf89ecc926a5372dad5f2a366d2e036814a4eee87dc50c12aed3a5. 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/ZZOPM2110049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x572a92ed382563e02ef8b7a39f6a29e7f5028fef9035be099199b8b03a803da7. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/ZZOPM2110050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd880adb4f94de097d9f37a0a3e574e2674218b3e9257cc11ebb21d9640994de9. 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/USA2P2230309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896960646996bf688fd23550d40a1f70c7527c2ab8b6482b73f602a657ef6378. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/ZZOPM2108715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x896960646996bf688fd23550d40a1f70c7527c2ab8b6482b73f602a657ef6378. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/ZZOPM2108715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ffe8199032336a7a89d624a56c7f2b29033879f3b69fca0222769355d171159. 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/US39N2043890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3222c48aa883572954765faf9425b48244c7ceb1c2e9e23320ac54ff8b2ac1c3. 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/QMBGD1790074.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc337c1faa168f1a44d51ceab76ab3dcd76b40b72718d63f35a798c37351a69ff. 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/QMBGD1790062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3c71a2c24ee0e9c89616f0cd062c043ce0695844b81142943ae9e8f0218cc9c. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QMBGD1690061.