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 0x78a2d84246c43f95394f4274f4ef835214ff697cdbb17f9599e6422c4251b6bb. 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/43acab30-12fe-4946-80bf-e8b5a833103e.json and https://artists.proofprofile.net/proofs/artist/43acab30-12fe-4946-80bf-e8b5a833103e.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 0x2558d24deb47e7332d371e1dce4e8cd137c20acfda567b319c065f3708cff00b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/USCGJ0634843.
I Don’t Want to Be in Love (feat. Marc Nelson)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306f36fc581725297938d59a6d9c46e0cd8b91c9a594e936853a3ddee7990cb5. Chain 2 (Bitcoin): anchored in block 958538 (2026-07-18T10:30:13Z), 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/USCGH0772850.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8072e07af9e2c1e0361017fedb221be745226056846177bcee50d050e8c1f4ca. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/USCGH0772851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86e7cec969db84b950fd4d2e955368d6ebcf63567b13ec617b645ab7c9d97466. 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/US5BY1250183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ffef78624a25ae93378094eb0b7bdf239a504f6889f7051ea26ef44d3409d54. 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/US5BY1250184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203f23402981bca4e79a0e6b1db7f8c78c577f7bea3010395767491b91d14826. Chain 2 (Bitcoin): anchored in block 958517 (2026-07-18T07:54:29Z), 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/USHM92100249.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa723166448730a1879cb6411d70e94ff641b84b6069d82a15b801b6ce7e709be. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/USL4Q2232223.
Xanadu: Original Broadway Cast Recording
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1bf1ace83a7ca6e2caab7c79266461a8d4fb59b5d0ccbc1fd445bd8ae3a7b020. 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/USB960885801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcec44b30325b67e56c5c166086a7a55118dc387f5920f012bcd187c46c77c46c. 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/USB960885802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ca0fa7c284b6b7af39e285d5d52e45ffb773946c16528557f8c8588573250b. 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/USB960885803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12a6a2a9ba20b5fca80d732823167d0974f39be6bc2fd91eda3420ec0695839e. 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/USB960885806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ec73ef05408c55a5674a1e37e3a58f8d6bf92f3c648d1030cfeff28b827ed40. 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/USB960885809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a72bb63c20c0e9164f2dd472964e0b379c61d0beb1a769e773fcf85df396861. 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/USB960885811.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8264ae8dc1ffe847717bb664a6b7b6cdac12ebc86edfd424327252f39bafe171. 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/USB960885813.