thumb|right|220px|Joe Temperley and Gary Smulyan Gary Smulyan (born April 4, 1956) is an American jazz musician who plays baritone saxophone. He studied at Hofstra University before working with Woody
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 0x26d69bf3ffc427e5e028fd001e563d05116320c7a87a340cc40ce4742198989f. Chain 2 (Bitcoin): anchored in block 953614 (2026-06-14T08:40:32Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/15ef83d8-0389-449d-9137-0eb665f903e5.json and https://artists.proofprofile.net/proofs/artist/15ef83d8-0389-449d-9137-0eb665f903e5.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 0x377e5427ef0599c0ca8bb12ca8f525d18d50d545e91a7d94a30388e484504170. 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/DKARS2401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa731df1470310cf15124175599ce52903c2453c0cea809b6ca41042e0d356b59. Chain 2 (Bitcoin): anchored in block 960478 (2026-07-31T23:30:38Z), 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/DKARS2401102.
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 0x7e367539ffbf7f79b27d77c1789ad10745e9e602a12aae4c87c3b48f3ea1a695. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DKARS2401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8bfa7758edae6c458836d5fcaf8ff3af057c6eac9d152f248b57bc0bda84663c. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DKARS2401104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63ed9c3cf4723b8fe1bc547d34f979db3f2fd11d2c75d48d7d3f755356b915d2. 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/DKARS2201609.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5dc116a7605dbc6a525ad3d0fdfcb94528c6972dfa16e547a3cbfca3f51696. 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/DKARS2100702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b7d86b99a7ed5341deff5838dd429207e7de49dd50a97790af7a53cd3cf3424. Chain 2 (Bitcoin): anchored in block 957067 (2026-07-07T16:54:37Z), 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/DKARS2100704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9eb915bbd0f6f44d8563c5191972648471b65e141a7a05e6210ed8a84f071b1a. 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/DKARS2100705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49500c2b9b4789a4ffbfbfdada5e7c5fb42da964ddbaf102ea96b1f7491b9ba7. 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/DKARS2100707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47234d5cf3a3f46809cf36412e3b2ef91f4125e8d31ff82af55c47fe30055040. Chain 2 (Bitcoin): anchored in block 960229 (2026-07-30T08:30:10Z), 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/DKARS2100701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09891a36b7632b52c813c3fa6a999aae298f88c57da04fc72fa3c20a9cd3cff6. Chain 2 (Bitcoin): anchored in block 960435 (2026-07-31T16:33:26Z), 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/DKARS2100706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf52ec77fe2c6ba0ef2f98d5d23588b678bfdbbe0a43ecfc0e3f63d828897c5a2. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/DKARS2100708.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x837581ad01ac8ceb2a0d43f2b5b678c554eaee826b5197667f105da6797a6823. 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/DKARS1800407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf812a07cdab790dd2bdfbc0faa505efcb21e75d750a3c098e50265b0df5a4f9e. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/USFBR1100065.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x503523e928fa094325ed844cfb164df3a27fa8012b117c8be72c36c3de106a6c. 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/USFBR1100066.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b4678e968977d6100b23f902a8afb70660ac0133498b852a12876ea743a4623. 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/USFBR1100067.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d7695dba73a3587890eef633d19085ed302b68ab570ca14fe4f04a4227ec910. 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/USFBR1100068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f97425300e009a3e704e69f246a54f0336d6d3fdf967b15ae5e30b6dc903f58. 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/USFBR1100071.
High Noon: the Jazz Soul of Frankie Laine
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x610285489e983d04f188927a986e3eea2fb56df92f19b79d8b6a7a1b75d0ed49. 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/QM7281759485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bfbfb3595075d637aa303cc2ddf2a48ece280c5e7ef60aefb534dce0ddce75d. Chain 2 (Bitcoin): anchored in block 960481 (2026-07-31T23:51:35Z), 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/QM7281759481.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8a126cec71b1e93cbdab3802e2f8c2e37e9a20d9599fcd711ceb2ac3a911213. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM7281759482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9ea08d9aa4b6dccb4c1b8a9e2894c24384ce3b8caa461da07ee7aa6345b76e6. 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/QM7281759483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5c25300adfa120f9d2cb76dae0dbc40f193df46b53ec98915562e0f57b3efec. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/QM7281759484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e02aad8ed1ee56dae869598d03707be7fc03454060ceeeb9938ea7e9d5ff51b. 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/QM7281759486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a2e27eb551154474f90424bccd81e501b5f58ffe0ca1929616199718d04f021. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/QM7281759488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f20fc4c428d532f524ddb935b81319ec0ed723c89fad9f766cef0cdaafb4f40. 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/NLGZ20902139.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7233e914afe032375e0a6fc9c6ae2f3f2a6b8f489547255e4aa8ae4539e8d94. 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/NLGZ20902143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a3604a0dd9b1f3af53ab69e144d573457fc887d8105a32456e1994932e285b3. Chain 2 (Bitcoin): anchored in block 960383 (2026-07-31T09:50:37Z), 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/NLGZ20902148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc027b8a245fc532e312099818d7f8fa0c575aba6b64f9e2c4031851d02ab3185. 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/NLGZ20902241.