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 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 0x0f3ad920fe72d1bcfec980bd5da7622fdcd26090ee1fa6b1a4e5186b4fffdddb. 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/d3f2aaa1-0e15-4b8f-869e-4c078d9221db.json and https://artists.proofprofile.net/proofs/artist/d3f2aaa1-0e15-4b8f-869e-4c078d9221db.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 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 0x53c8d56c1e2f5ceb3cacaa86eb7f782c9dc1a19715689266da884b6e534115b8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/USSF19103506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xede187a22d4844c57c7df147ca0dd54c0477b4917f09216af80c788c56db335c. Chain 2 (Bitcoin): anchored in block 958480 (2026-07-18T02:58:58Z), 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/USSF19103508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f64b6027d28fbcc4a63b9387019875362046d1f10004047dcd2b66c18328d2d. Chain 2 (Bitcoin): anchored in block 958677 (2026-07-19T05:47:23Z), 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/USSF19103510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9bc0b2673f2f5c4186cfc04d63c20afcd48e511174e3190ed2b09e623f9ce9a6. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/USFI86000129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48b9c962ca6b67665fd1caab69944757e539bb38557beb79b7bc2f2358156948. 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/USFI86000130.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6939d7c6f094bd9e3cfdbd1843610fe46e8592851e7f23f8674f0eba44221b43. 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/USFI86000131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd53483e238eb29f521d4dc74f96ee5e0498776b0b96c3badb0c6fd4247f9f5a4. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/USFI86000133.
Goin' To Sit Down On The Banks Of The River
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6bd74ba60959b3126ca0b057f52ccb316641323cd54162f7a5e3efb4cfb5ff70. 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/USFI86000134.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9326c1a8ed8a3b4afd10606e3e6199a4c9eb3435b6a44740e80a2a54476aaf9. 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/USFI86000135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x950cdf60caf866ccda1f43f382a72559e62686fbdcabd9c6e08074d5c945472f. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/USFI86000136.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8fc5ebfa71f6f545441df732e07e5aa83e3b145e8d6a0552800e558ff4b861. Chain 2 (Bitcoin): anchored in block 957613 (2026-07-11T21:37:58Z), 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/USFI86000137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5baa2fecb758ab1d563dd91c5e61e8230aa60285845566048cf8763bfdeb643. 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/USFI86000138.
The Complete Early Recordings Of Reverend Gary Davis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e30b45d2f8bb13d326fa456b8b985b224e76292abfb235d85d1430cb6d23056. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T18:54:07Z), 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/USA560548565.
The Guitar And Banjo Of Reverend Gary Davis
The Boy Was Kissing The Girl (And Playing Guitar At The Same Time) - Instrumental
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7c4eeb2897688cce09fb3a14c4c7f15f242532694cec9678102f9495cfe9c98. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T13:14:47Z), 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/USFI86400224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f932d3b22a60e2ea039bae4e8472a5f97f611e7d17f7204e2f7c62ee9c0fc56. Chain 2 (Bitcoin): anchored in block 956397 (2026-07-02T21:02:00Z), 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/USFI86400225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24052c5c47590213e34c10c6140d8baa4279ecd325277a0f2472930c9f9438cd. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/USFI86400230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77deb17844305f2202ff6191234cb8935e8c1503119059a03137755c5e24035f. 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/USA560520142.
Demons & Angels: The Ultimate Collection, Part 2
Demons & Angels: The Ultimate Collection, Part 3
Demons & Angels: The Ultimate Collection, Pt. 3
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe80351948470e654f5b0ac2a4f233f3d859b7c16305415a2d8e9bde3c469aff. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T06:27:23Z), 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/USA560658543.
Demons & Angels: The Ultimate Collection, Pt. 2
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe539b3cb4d553b3504f3c20e7f60bc3047e9558ac85874ac2defc9a489690e75. 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/USA560658533.
Demons & Angels: The Ultimate Collection, Part 1
Demons & Angels: The Ultimate Collection, Pt. 1
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2384663f1d7d58f5736e3d13153a68c0117efa203d1a2178d0949e36c056bb05. 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/USL361100206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfea8d4b96758d64fd65c788ab95ade25006c886129eb853c29e8377c23c619cb. 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/USXTN1041049.
Death Don't Have No Mercy (From the "Call of Duty: WW2 Multiplayer Reveal" Trailer) [Remastered]
Demons & Angels - the Music of Rev. Gary Davis
Death Don't Have No Mercy - Remastered 2024
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8f3a556f2f70b17079bb8d0863edb41cf98d7916f4e041bd8a2f957e6a7e2d5. 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/USC4R2445174.
Essential Classics, Vol. 762: Rev. Gary Davis
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa9e1352dc4c679e333c7d85207fc996d5e6999d558c44b1acdb05f795c25cf. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/USSM11505796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3a917831cd9f9c8707e7fd5679b851ffc99f2a274bc1a383593332e820d20b. 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/USFI86000127.
Classic Appalachian Blues from Smithsonian Folkways
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f64b6027d28fbcc4a63b9387019875362046d1f10004047dcd2b66c18328d2d. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USSF19103510.