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 0xd65f6aaad18ec183baea4c689eac5674ae7d2baf565639dcc447e11917bde32c. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c04991ab-9054-4ebe-b7bd-4340cc771aa4.json and https://artists.proofprofile.net/proofs/artist/c04991ab-9054-4ebe-b7bd-4340cc771aa4.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 0x9d032fb482be6b2d3722b342352fdd4c38cfba4fc4dfc3af26c457d2ff7615ec. Chain 2 (Bitcoin): anchored in block 958197 (2026-07-15T23:21:53Z), 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/QZGLM1903123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3519055d431d4beab9659c513f5d751eb1f844b0fad100f71ba49d6fd6255bf. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:25:54Z), 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/QZ5AB1783806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5df51e3ce616960b12b60bdbae98316228759f5b59655430697874801f5da8. 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/QZ5AB1783808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccf6310e258d61f740a9985145931c288e617582cbda262ff7f818fa25f5fae2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T18:22:42Z), 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/QZ5AB1783816.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10c74f8ad11c9deaf8c564af3cebb0f1c52cf14b1babdf2aa2f6297f231b9fa0. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:41:25Z), 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/QZ5AB1824448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0078f2eb5a365ff9e9e12375dd3d4398ebded45fd418f050486dbd3e9992b56. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/US7VG1977247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9dd82a64225dd6ef6526288f53c441fbaedee663b9ae9384f121f59be4075ba. Chain 2 (Bitcoin): anchored in block 958329 (2026-07-17T00:28:59Z), 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/QZ5AB1989782.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x934f2953b518f375c3a842c76691d1ff6d7026fb435070a724cc7060d3d81a4e. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/QZ5AB2024455.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a7ca01a7fec9781e33d5ab6776fdebe8a79a35d295bc3e7fbf8eaa5efc085e6. 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/QZHZ51950510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381a9fa43878a39a8e80b82192bd1d3c0c4c817705d71bace394c5ac33c74b73. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/BCFII2000035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x08a483e901d3415d6fe4126aa4cc17b652f212f3d5d93acdd045b233e2d61168. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T13:01:56Z), 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/BCFII2000036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f4222ad9004ce28dc9dc9a775541a1eab867ed0546e69f00ab882b5d4783092. 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/BCFII2000037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e7bcd71aa2b8cfedb0d579673eaedb6b2ac0fe09147c8ec76097a56735773e7. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:11:52Z), 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/BCFII2000040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88f29dca4ebed943f7312dc8ec41fda79a24c0a458c8c489a73f9da9b817e293. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/BCFII2000044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b35048cd4f2c1f28253c69c1221d39833eb0a35d91a7fa8a500cac719fac80b. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/BXIV82177040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48ecd187bf3ece16408f03cd936c2fbc19e277848273411936146e2d35570009. Chain 2 (Bitcoin): anchored in block 957898 (2026-07-13T19:28:48Z), 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/BCFII2100003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb329fd9fdfe4f312277ba87ac72f336ae3a5935f9b76836d760296e680bd674. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-20T14:03:39Z), 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/BCFII2200002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60325bb4a1da9e9a50e5d01bc36480a1260850e2f387eab6736d4be199b0e26b. 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/BCFII2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8133b68718803c47df7f7a18ba80a99d96f4786ea147b375e01af08ba2205df2. 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/BCFII2300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b6784aba46e70a02ff45dbd00f0c7d9038793c8fec0249b8957d7b9cc39cd64. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/BCFII2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83805fd8acfee1b6855149f4ecb83e656a1e206bb5e30f027961f947c4fa61e7. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:45:59Z), 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/BCFII2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d830ddc4b60652182f512958adc56a6b85dce93a25c2bcdb1f8324d21cc7b79. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/BCFII2500001.