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 0x65d2a6f09602629f6f33879cfa2a66e71d9f320028a9325a65a0a4aefd244101. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8106e10a-f7f5-48ac-b387-ff2b30601e01.json and https://artists.proofprofile.net/proofs/artist/8106e10a-f7f5-48ac-b387-ff2b30601e01.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 0x0cfbab681f55ad29008854f0bc66d03e9cf7eeaa331b976e97c932b3e47d7d14. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAM460417688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3871163cd58109ecf885927e356afadfb69ee9ef6574c12c3d191fd0a2aeddf6. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/CAM460407815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x022b3797ec4e2be6ae53756d4b40a52f15d82ca259d43a785e92eec7f677721f. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAM460407266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1113ba4279f6d6cfb01cee1cd7ed3a3c31e27e6c4b92d9cd778f576e8d79dc03. 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/CAM460425056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf48a12cf1bb7b5dbe9921fd6932b8b976e0e6377125f919fb4c46ae994afd2b9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAM460427286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0e001742e702a84857c9790c05b46f90bb41dbb059f28ad96b79049922dc2e. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/CAM460427217.
Theme From One Flew Over The Cuckoo's Nest
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x05138ad38d0ffd200f4025d63e139eb9b9084710bc288f8d998e435ecb8fe182. 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/CAM460409401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab9c9c879d3896fd72b8ea1ec17f639d74f5b290ca99a37e9f6a6f93c93adf1e. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAM460403390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d0ecc7c974a6985d51c6646164a9c60acae19fd467717ed8b86858cb913d24. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CAM460436876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcce8cedf508e237162b07a8eddde749f916f03bb5979fb13562fbc561f829a71. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/CAM460409950.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90f5cf18434f5857b1aa48d0ea6bf96a582f549205ce8dabc898d623581cf8c4. 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/CAM460410866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6989c0192097215adf352c90876fea2e48b7f7397011acb6678d18c740d9c77. 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/CAM460409400.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc0da50773cbcd413350abdf08378ddd29eed2c42330cce273dde18fb5b143ef. 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/CAM460410392.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6f2c665376fefa8aa3bcda4e92776d0386933509d17c5f1281722194d84e1d. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/CAM460407265.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d405cc4bdd9ac62f6ce3b20226979f4fab0102ca26be1e480c25e91be0f967d. Chain 2 (Bitcoin): anchored in block 960317 (2026-07-30T21:35:24Z), 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/CAM460409028.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51dc0dd4c332c69d7ff32af2c49dfbed309a0debd51cb8103b069844f6e3be66. Chain 2 (Bitcoin): anchored in block 960500 (2026-08-01T03:13:03Z), 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/CAM460409019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34cb59281db629c861e123db3ab525d00dab21607841d4368d3300dcdb9aa169. Chain 2 (Bitcoin): anchored in block 960303 (2026-07-30T20:11:13Z), 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/CAM460435982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe048b4a451e1aa3712129e9bc9366482828cabc5e9bba4b6c2021922e4ec159d. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CAM460435331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8de47bfb442a80c999e1412e873d888eb7c56aaff1010b0fb03de6f6ac366620. Chain 2 (Bitcoin): anchored in block 960163 (2026-07-29T23:20:38Z), 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/CAM460408242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74c55f44a8c36b33ffb2457a1812f779293237b991dab511472c060cf475dc90. Chain 2 (Bitcoin): anchored in block 960509 (2026-08-01T04:30:37Z), 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/CAM460435489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b88b788735f789ab70532f93277f7802174d52ebed168a2593b2f5996eed7c8. 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/CAM460404257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b9ccac5304712fa52992d5d746da773f4e201a3aaecfcbd3638a5130afbd195. 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/CAM460401634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96eeaed5c6d1f33b2210874aee9b58892b8998bb388ba4fa3984766516a41609. 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/CAM460400479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe29d456bdffaa33daf4f68acf5379b8d6ba739b73953f0f3f93b7d7998db927. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CAM460404865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a65c4a559943cb5b0f180e6142ecd784bff4b170cabff7956403c5093ec341f. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/CAM460407016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fddb56b6818b324db70d9510b47872feede708efe5b09243a35e8fb9d4c9ef4. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CAM460408907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x550ea38026b32ee20dc9480cfb43e51f166801270c0b243b5466796de678e134. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CAM460433956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2e70562ed759397460d8552c879262f185c4f1d11e4b2297ee3f8b3fc053845. 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/CAM460417375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9333de1449352c4aeed29634bb0af28513c119383cea1e25c3b05ff9af283b1f. 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/CAM460432575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x308ceb1bbc12786105bc8b2fe585ce92f14b3688e0d0b81135526dd48342f0cf. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/CAM460419448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d64fdc3fe48fe26baa5090d9986e3941d8b04a859e615c3f4b8d527eaaade55. 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/CAM460426635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5eb1ab45535c43b64b05481463820f820cce16eba9453a292f5b14501b0ff6a. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/CAM460400153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x039f65861b2bcab909c90310f84d43d30101d45faf0023e8c8864e9cc18eb776. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/CAM460401623.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1070c8014178370a5daa76a43cffa6e65a58712b3d93a49f8498a0047004d0b. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/CAM460401119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fcad09ff51053cf91d62f4baaab97e0f6970a2cebd1153965f6f7380f00d2aa. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/CAM460422771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0b7a920ce32ef1faa2e684c3345d502001691efb0d905f32e464891be753b8f. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/CAM460426867.
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