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 0x11bdb7e4f36216876a73d9b472a113cb3b5c590127c9bfd0300b6df9e3dc1b2f. 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/7debea7e-6fd9-4440-90a5-60801f0b8ea2.json and https://artists.proofprofile.net/proofs/artist/7debea7e-6fd9-4440-90a5-60801f0b8ea2.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 0xf8240bb48518c790fbd3bb878c91968d42b8bca8d242e0aa59eff058a2c9cd8f. 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/AUAB02400079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb9d34e3480d5fbff8132f2632135a9c393b32aab0a4fb39ed88010a5e25e7b. 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/AUAB02400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34d931b81c44fcd714ee757d901e72baa6c569d28964764984f9047fad8fa311. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AUAB02400086.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c0fc2cb69cb31f6bf2547c17c68914c42d441c80c64010759fb8b37c8fd8e7a. 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/AULJ32000062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80efbefa4cfd5de6ce617fda7bba3bcb9005b39fe10b01502ab9195c2e3661fc. 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/AULJ31600039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x014d53c8c77b9f6c33654bab04dd7e233bd07887e1f4abf6509dee0c0edb00b5. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AULJ31600040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8638d38effd3df5f6aabfecc27369586eca392cbc346f94d40539789181cd59. 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/AULJ31600041.
America, Won't You Make My Dreams Come True?
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5d4fbf04727ea86c6420c56078518116d2c5f285af93adb5611916fc9e910f9. 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/AULJ31600043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2d89f0ba4664243480c6e3898ec585b1744c928e0dba2762cce0e007f99529. 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/AULJ31600044.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e326fd0c4cf46a5c38826df7232242757913473094af929a5bf07ed89cec7b3. 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/AULJ31600048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa185159236bcb4e354c25a5ede746aeaf6e2c459125f4d35f6be2dc34ab25241. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/AULJ31600050.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bb9d34e3480d5fbff8132f2632135a9c393b32aab0a4fb39ed88010a5e25e7b. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/AUAB02400085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71e1bab3cfeddbb94a2145ad6d931e9af5b50f70ad99e5fa0c27166cf7a11261. 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/TCAED1941639.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x121a47caf78387f150c2a0b86a50cba830e6ec1a62b4e506bc3bc77fbff31372. 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/AULJ31800051.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81dfc94e259a796e6be943a23d3bcd77104f1600a4111905699efd5b6b60012a. 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/TCAEC1922315.
America, Won’t You Make My Dreams Come True?
What Goes on (feat. Meg Washington & G. Love)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x184bee5cd319fc0b000401de4e9fac122973c09182db1d189bf03caa06809c53. 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/AUKQA1200001.
Hold Back the Night (feat. Ella Hooper & Dan Sultan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6fb51759809203ee7b9a808d6e0974e45584ae849e6f9cd7c65226d69d7274f. 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/AUKQA1200002.
Here Comes Your Man (feat. Patience Hodgson & Jae Laffer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf372e3543296ed1a19db3847ff2f78b7f0026f88da7de4215f2c1ec0f44c8e1. 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/AUKQA1200003.
The Last Time (feat. Bertie Blackman & Jim Keays )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1686e262990669cc7d368417c6e8f0b0fb40c57f034b95a36e34fa8ea9e0baf. 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/AUKQA1200004.
Rebel Rebel (feat. Lanie Lane & Alex Burnett)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe51b02cb3d2c029b48ed52e7242f69172ebe5db8723b80be0c9b3cd47ca7e3b3. 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/AUKQA1200005.
If There’s a Will There’s a Way (feat. Linda Bull & Black Joe Lewis)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x571c9ca9abe979802d70d4ec852c2b7acd54789e64c6dc60285615a49739e8fb. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:37:31Z), 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/AUKQA1200006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ee6dab58040bf7385f8c7dc1e6bbc64231f90ba42248f2041b267029aff6008. 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/AUKQA1200007.
Where the Wild Roses Grow (feat. Hayley Mary & Jon Stevens )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3f7bfdcfa57604f92cf2ee9addfdd1e9db5ac25aab73991ff27b527c16ef44b. 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/AUKQA1200008.
Leather and Lace (feat. Holiday Sidewinder & Andrew Stockdale)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x618ad77bb24c18848212807dc48504f96fd121e47caabb874c93e1e0b2d59077. 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/AUKQA1200009.
Crying (feat. Jess Cornelius & Mike Rudd )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d310c3dbb7a7cb58d349dae6ec85723210fcf883bdd083569b2af229fb72e9d. 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/AUKQA1200010.
I Won’t Back Down (feat. Dash & Will & Kav Temperley)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38fb38cfcaab2f22017f774b49a314f696412307597d15b285346f7eda100773. 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/AUKQA1200011.
Long May You Run (feat. Talei Wolfgramm & Simone Felice )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94e0514d0711b5b433e25339823867d2c89bc9f46ac3beb9bc613dbe1ae109e6. 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/AUKQA1200013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe925c67c5b66cb3cd93163c4ce2416041825059ca3cb007bfc2acc446e1bedb7. 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/AUKQA1200014.
Stumblin’ in (feat. Loene Carmen & Jack Ladder)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb1d51f3f349fec1611b3e547f2e6a125103488183758db1b0a52de187a34aa0. 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/AUKQA1200016.
Louie Louie (feat. Shellie Morris & Ross Wilson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99ad1916da58328bc6466f0326326183c78843062412e8cf014ccec8a6e3b0ff. 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/AUKQA1200017.
Crazy in Love (feat. Kate Miller Heidke & Jarrad Brown )
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5090073cb3b2cf8209c964091eb43de40d34e2732ae43afd7d18c34ab5e410f1. 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/AUKQA1200018.
The Times They Are a-Changin’ (feat. Lucie Thorne & Ronnie Charles)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa09ea88d3ad4032fd43657a4613c7ef6bbb074e8b2dcf56e638a6e1466091a80. 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/AUKQA1200019.
Ain’t No Mountain High Enough (feat. Marcia Hines & Old Man River)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed1e138efc3ef946b1439edb37145e3be30a0d8b8de6141b2fcb726c589b957d. 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/AUKQA1200020.
It’s Only Natural (feat. Jenny Morris & Don MC Glashan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dd2fb0e0b414698abcc167acea64d0667ebef89134a17c2e243c0358bb6dc0a. 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/AUKQA1200021.
With a Little Help from My Friends (feat. Ella Hooper & Dan Sultan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75f1a319414009dcff49fd3f1dec3ee7d53a1a8c6814bbe69d1a4ee8d8fc5db. 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/AUKQA1200022.
Take Something Beautiful: The Songs of Jesse Younan
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4442a417a4d17bbce8df8aab8a4a18c4268de3112846b425cf697d0b0a587188. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/AUNHG1500103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c9f8e0aff6aa425018d97865192540ab4d29647921fe4b71c6b2e811fc5f9a7. 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/AUNHG1500104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24acd596a2c470a1c29c184bba3f0f2253c646591ad736c67482c824658bebf0. 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/AUNHG1500105.