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 0x19b4a39dcb87e5623a167749589cf62b71529f96fe5ec2e8c21e5dc56d76b7b2. 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/abfbe2ce-e5f4-4c28-8271-af079250aeb7.json and https://artists.proofprofile.net/proofs/artist/abfbe2ce-e5f4-4c28-8271-af079250aeb7.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 0xe56279317249f39b411b365a605becaf935f8a000cea39ce4b53108153ac74ae. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USCGJ1626318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7055bed6b692c3839c319f22c206da97c9d5b753a5b53948ed0142f5553aa1f. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USCGJ1626323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6fb64bcf00046a0dd439af8f8b58abc1306407381adc9d9a2be45cfc3f01e1e. 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/USCGJ1626325.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34506af5bbb9efc0b2ac79fd3e5df8f4b6249480ba708d7f3421a5f4244bbe80. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USCGJ1626330.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xceeb9e2a3506bdc9b0dd453ef92c0701bd20174c61f6888258131365bc0f1c10. 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/USCGJ1626334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ac842b579988e783a5f1e8e94671726e492245f5bad4968b168b5811901663a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:21:48Z), 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/USCGJ1626335.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f4529acb6b0d576bcbb710fcb2b7b33726ef7eae01ed390fa6af9af601a55ce. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USCGJ1626336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b909f00fc977c254694da7ce29c8c6488e18199c4975f0c22f0ee5651b21293. Chain 2 (Bitcoin): anchored in block 957564 (2026-07-11T12:19:47Z), 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/USCGJ1626337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a28348adf1efb62bb1da6f73820e35d89ab13e87925fdc9223aedcea5c200ea. 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/USHM81734334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ed6a50d50a7df279d355d15e87b56f6ad33ff1e495d2c505ebad7349d3d027b. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USHM81734340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b6c6bf3f8510822c7fdc0a3f465f599b3e04d1ec619436b54b4d194737ae27d. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USHM81734341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6943009942d7a77b5d214c2f7797e731b96089f35f357eae6284cbe707f311b. 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/USHM81734342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6f2f60ac0c6746c9f2592ccbee208d96c8e237b80ab03ba4aa215a8f694fdc. 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/USHM81734343.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6b3e193cc79b36a705df4281a1546e17f77e5a4f3cfe877686008e85db0df1f. 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/USHM81734353.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd62fc7155951b2aeb7c8e6ddfba4c0b5116e31320fd327562cd78d97476573c. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/USCGJ1805487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46eb488a57cb55f2f32eb10a283e1445029765a61b3994e3c91ac1147de5955c. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:56:09Z), 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/USCGJ1805488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6d66ba231be6c8ef7aedad921c1d480c139cb146ddaeba1f42ca5dee4d5388a. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/USCGJ1805489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d7af6c64a60bf0217bbebdacdd51da6c5a4987d9a7660fc07b4b27570b5b0e. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/USCGJ1805490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0f1a3196f81f8f5ad72d2cba59078ef8dd889c7a78c8154f1926396a2996b7. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USCGJ1805491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0098f8305fd74be14b99a52008f433b295abad5f676c301f471dcd5b099b867a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/USCGJ1805492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbefe442ffe09c13a55fbc2f5f128e79706af71e97fe9b7503c999ad6f49e2f6. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/USCGJ1805493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7a5d7003a2d86a29ca62adb0dda165f22498975366a1ff40ae9b37b10170a51. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/USL4Q1984785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10d746bc2b4a0d0e28badf123fd47b07da917aee5a778b6dd2af77bd504ae292. Chain 2 (Bitcoin): anchored in block 958965 (2026-07-21T04:29:05Z), 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/USL4Q1984790.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61b3d8a88c184ff34f02b1516d15f76378480c9e9c0987136e21d5b3b13275c5. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T08:48:28Z), 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/USL4Q1984798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf207adc0b9a2cb3476cc4b070e26ac00bd438b519ed55c6ea50d74492a2f1b1b. 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/USCGH2059557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5781336be4bec3c74b6be90fb55dcc4b409385b787ed647ab57c5f8521f20190. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/USCGH2059560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9df6861b6a3a87cf568ebe4d9bbe252b700e37ae2e43d296f1bb3a64496219. 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/USHM22044421.