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 0x11f34e46c8043c6a91056951f1bd5f66afd7233e16ef5f9309fce37ef4d6ab9c. Chain 2 (Bitcoin): anchored in block 953791 (2026-06-15T13:40:30Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/e06da717-da10-4910-b76f-d3d67414b4c8.json and https://artists.proofprofile.net/proofs/artist/e06da717-da10-4910-b76f-d3d67414b4c8.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 0xec97c39e596cd0c033f1af30841875829f3ccf00475f60c3d46394a4196fa1d1. 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/MX4971534116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7ae6ee344ef6da048a50f653faba186f62ca053b716464316873d5159c23d48. 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/MX4971535488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7a6d82069fcb0d5f38a2278b8c27e2b948c7b1972b048086866921258690225. 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/QZ5AB2442304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf38043a6a60c43de737dbb1042f018c61035b624ba1772e5fb4816110511b5cc. 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/QZTVM2316470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc260a7b9f681ad661447a45fe070902cb5c234aee752d289ff83357a7ae33899. 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/MX4971533431.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025ffd7847c17da9050606e14f6e052678f8f27d6a25e6956a1bd8835516efd0. 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/MX4971533432.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22c2494525991eb298ba7d5576ea75ffc1489c4025385d2ca0c7b5cce97b9def. Chain 2 (Bitcoin): anchored in block 960489 (2026-08-01T00:40:43Z), 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/MX4971533427.
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 0xdfb3e280cbadba5cf0558521334bed2abf257d32902f5ff5d371fd11a5b4d515. Chain 2 (Bitcoin): anchored in block 960362 (2026-07-31T06:58:00Z), 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/MX4971533428.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446ad6931f0850b1efd18adcf92e230f77cb5a37f4f0dbc22dd65bea08a61a0d. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/MX4971533429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a6468466f50d480ba3be53a333221fd7df7470581ebe6e2723605e5bb2bbf57. 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/GBUM91800111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x092c8a44904a8979ed6ccfa863691c6a6972933cff22f96bd01abc4d059a0f9b. 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/GBUM91500055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85c3a82d4f5623d94c821ad949e379bee33aceac7374c944e6479857d46877c4. 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/GBUM91800114.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65be4c6b3d9ca2f38f16db74cea76aa901abcf6cb92a11acf60dae58620a63ed. 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/GBUM91700041.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2dc8919732e9339d372ab0600b50fda10887fe55681be83762c9853469939c2d. 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/UK79E1500030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ea30f41dc6d7b2e62ff9f94ef0481e601c80a420ff39d79d194dd981537d981. 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/GBQZQ1101152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b8a8b632749889204cfeac2091063e566f0a8b0e3f5261113ad12041c5ad02a. 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/GBUM91800060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104a3aa8d87eb3e8519682d5a8db4694d6608b11a808f1b22741502a6d3a1763. 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/GBUM91800005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86cbf068f2ff449637c1d8796cb82ac16595733d9c294e8e32e7dcbce20c2038. 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/TCADI1784992.
Birmingham Crew (feat. Letisha Gordon & Mowgli)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45adce869d614ae29e05486fe8a1b55ff494b8460b4073336029b37af478924. 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/TCADI1785001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xadd98968732b2f7aa0f991a236ec0ecf82620f10ca8da092ec4e067c22059c68. 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/TCADI1785002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2b01000487067a5260bd801e87c945ca76caeea08c97ed9ff633f094b24755d. 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/TCADI1785006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a1f437e943b3a99e3a7c5d8971870f9156ffdde5ecb50aef55dad88433607f. 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/TCADI1785010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25702d142fad188dcfa117c7a8416d9c896c3757d0a2fccf915eebfc26e88e74. Chain 2 (Bitcoin): anchored in block 958042 (2026-07-14T18:24:07Z), 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/TCADI1785016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xea02e4deeab3e481a6007fe7189308c147cdaba76bbe70c02a53deb26b21e510. 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/TCADI1785000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf86d7236f9572a12d2db2650417464fccf81331aa0d5e2240a7a8f41160f5032. 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/TCADI1785020.