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 0xd8f90718a9f2da0365e358854e8530050a8b4ff7921f2af5c8c8789b0dc6d938. 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/957d61e0-8d14-4c83-8af4-dc68284765d0.json and https://artists.proofprofile.net/proofs/artist/957d61e0-8d14-4c83-8af4-dc68284765d0.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 0x4377ebc36e9b2949f59fdc9f7d36d13f0a0d1d122e2ba9f31cb16fd61965a450. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/DEXM82101837.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa281fae0446f90341788812725d7af0c8fc46e21a0ea6e34e4023a504db3b307. Chain 2 (Bitcoin): anchored in block 958792 (2026-07-19T22:55:52Z), 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/DEXM82101918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7f6016a0493222720c351d4c99e2c6bcf4d5754445774c2ff931c633c2e7aa. Chain 2 (Bitcoin): anchored in block 958656 (2026-07-19T04:04:08Z), 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/DEXM82101828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb228cf66d0cb70a9116880e5dfafe244b1ccb17a8fe276770eac5ae0c941a072. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEXM82101821.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x760a7c60e92f326575a8c4b84e916f6f98e6ce0c9ebe5712d31b0be4e90daf17. Chain 2 (Bitcoin): anchored in block 958541 (2026-07-18T11:37:54Z), 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/DEXM82101842.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a71a16fe747b227de36c0c253c57127b28cc95a87cc610824f617d221a11a98. 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/DEXM82101812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefb0f2b5109f80f010472bbc1eba92a55449021febfb724563885fa4d440de0b. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/DEXM82101833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe396fabdd3607c75023fbb278847b1477484bb70117276457794ca3be798a1d. Chain 2 (Bitcoin): anchored in block 958594 (2026-07-18T18:05:01Z), 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/DEXM82101841.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72d7809573cef88477b55a65a96fec8a56f0ed63b1226245e4be95816369c7a7. 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/DEXM82101824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9b0f762743609ab8472ee6ac25e5c33439b6fb7d755f2a47199c4973575f0d3. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T02:06:21Z), 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/DEXM82101915.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71958839972830829ea1d84bfdc0205522fe6a2233712d258e72ea1ce1588285. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T14:42:47Z), 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/DEXM82101811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x04d0dc9b3b748eb7bcf6ca70f228156abfac76f1483fb53aa61ac00a51c93bca. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/DEXM82100316.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43954e6fa4f792853b6687f2472b3e4bf8fe3e4b0218fa18c8ff797d71f847fe. Chain 2 (Bitcoin): anchored in block 958510 (2026-07-18T06:38:22Z), 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/DEXM82101831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ccabf7dfdce2344ada804dbf55903f3e77a7087d6f079cbc1a3349ac121fa5f. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/DEXM82101838.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x792376fc8d436046a74c7f0b5fd66976a3fe22ba15300d9480b1d734a6cac385. 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/DEXM82101815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4885b5786475419553092d71e31caacd0fe90b71822a8a0a04410ee1a74e671e. 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/DEXM82101920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26811813887b486a33606ce3f079eba63671e47e1396907f6f98661a640cfd60. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:35:45Z), 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/DEXM82101830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfcc055f27bc5af9b9bea772ff20a90b5d0c9038d5d51e66fee9b5d31cc117816. Chain 2 (Bitcoin): anchored in block 958058 (2026-07-14T20:20:34Z), 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/DEXM82100318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4dc64a428b899b4b9240cc9700a85ed2b38d9979e1052d88a7e199eeaec64554. Chain 2 (Bitcoin): anchored in block 958779 (2026-07-19T23:34:18Z), 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/DEXM82101840.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ace0bc237208a3169e368d25312846c149dddfaeba7b4ac8972520a44ce0d0. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/DE1KS2300244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2dc0062f2ca592447dbc157dc618c1456f7fd58aa129c9435d5922d866fa9b. Chain 2 (Bitcoin): anchored in block 958242 (2026-07-16T07:40:19Z), 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/DE1KS2300245.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3706beba8cecde784cfd55de9fa5b8cedbb5dd259226277cc446bb21c29a654. Chain 2 (Bitcoin): anchored in block 958395 (2026-07-17T10:10:33Z), 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/DEXM82101822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa81567bc4959eff52706dfabf591b13924862579eca1354f533a060b1be3fdf2. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/DE1KS2300247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0661305ca300ae60af6710c74d705c3bade1310aa1eb5e5033a8720edfc7614b. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/DE1KS2300248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d318b2bead5c32f6fb694943404027df54e479860914a5d894e52048e7f7855. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T00:53:26Z), 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/DE1KS2300251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260e29936c1a6dcea84c0ee27a0d737842b2a3454c57b7402f5cf4983de1dae8. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/DE1KS2300252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf43e8aca3caa0e8d88959601ff837d71fe57383d5210fb8165cf67676700d4. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/DEXM82101919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58a2bc3268bf0e5b4eb446a2ed2e7b6f90b87b9f1b87bf2735abe649cdb12990. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/DEXM82101817.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2948471b6c03b2beefa3ce2f65ce54f3dddfef863a8215562958cfb81222b357. 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/DE1KS2300229.