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 0x4089aef849532cd0fe771d80550a0e7b0b1c96c3f50bf1eb9fc55ee3de1e4a76. 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/bc6ce90f-d458-4526-924f-0259138ce64a.json and https://artists.proofprofile.net/proofs/artist/bc6ce90f-d458-4526-924f-0259138ce64a.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 0x615a304afdf7f05036bf2c2784966504300b2dc1ef729383c39326b5eba5fda3. 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/ZZOPM2236812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f3839adf12e33a75c3566585f4be7eb92104de92338e3c48a64dc478caba218. 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/ZZOPM2341920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe204545f68095644b2d9ca57c52701faaab2968bd8150271c4fb9a52b0318b56. 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/ZZOPM2341921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33c010bd1202b77465d9d93411276628dfb8fdeb47bb6b75bcafc85092abe14a. 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/ZZOPM2238058.
DAY YOU DIE (feat. Sarah Barthel of Phantogram)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x446b65a9d2a70acc633be2dcfaca8537b51d67ca8ad8d072e3c4324a7207d6c6. 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/ZZOPM2341923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73233369a3dcd41e2214636710b290cd6f2e3413b6791af3be1363257ac6fe11. 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/ZZOPM2241510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf811df4085dcb99863aac386589ff297143fad3815cf25226d51712a5b695439. 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/ZZOPM2341925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91bb6ae498bf0e2556f72c02d0d5008fe9377bb2ff49045fecc256ed1e08be37. 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/ZZOPM2341926.
LOST/SUN COMES UP (feat. Jackson Lee Morgan)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f0e05551448f6eddfe7082613bf34d1e7387ecc9636a6ec51314833b7cec10. 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/ZZOPM2341927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3c2be14f48b29b4667f4358374a4f2e89cab020d13881c1a615d640cdd5c367. 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/ZZOPM2241322.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a9cd0478b70221ba1de5bed000548319102887e63ee7ac27880c0fe7c7c80a. 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/ZZOPM2341929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5092fd212694336688baa82b32cb9d31d9d1cb8f34951977f8e4170d7792c4. 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/ZZOPM2341930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec0e0bc71da375651cce615a8dd299b11345d41f32877c36f1b3942c720c2722. 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/ZZOPM2341931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b5bf02d5897c457b38cdaf11405cc0df3cbebb0e20dc9d7636901bd9f54d83f. 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/ZZOPM2341932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x915399d9723dc5cf6565378fd8a52f803431bb1bc43ab99983757d3f4c843314. 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/ZZOPM2341933.
NO BAD DAYS (feat. Armani White, Collett)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dbb6f0063e11228d45aad3e73d2093a21124e9625d620eb129d640e00e2a89c. 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/ZZOPM2343200.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc647a5d16053e6895cfc0021e2b416aeb1832267742692f98b2052638a3e492. 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/ZZOPM2241507.
Wash My Hands (feat. Marc E. Bassy, Collett & August 08)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdfc85aa13cba7abed21a2433d9f5ee9b40d5ccd5a631367017d9a44f599c134. 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/USLD91725458.