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 0xf849e43e9b8b129d5ed9214f808fd611a7c18b0cf9b2ffafe9da6aa700b1b42f. 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/f604d072-a172-4d62-9777-09f4fa2da73e.json and https://artists.proofprofile.net/proofs/artist/f604d072-a172-4d62-9777-09f4fa2da73e.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 0xd8d41ff934d6aaef16eac070acf8d04f2df50bcfba5073201409346d8b4d5f3f. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:55:28Z), 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/GBKQU1643175.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90ce15f50d48dfa244268fce1d8d8221f5ceac1c143dfdc04a5c7552817f3fa. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:16:19Z), 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/CAENV2216442.
Encounter Like a Rendezvous (in Another World)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9998c90050375fe14b45965304aa7b93d6f3c8cebe4102eb44c1ab184575b710. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:11:24Z), 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/CAENV2219270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4557fd878b047567c5dac934c80afe241b9278043c9c0fecd4560e4bb79b1e9. Chain 2 (Bitcoin): anchored in block 958204 (2026-07-16T00:19:21Z), 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/GBKQU1712830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x583f375f789ab212e3a2817bc86755fd3d08d3e8e6a07c92421f50a2cd22693e. Chain 2 (Bitcoin): anchored in block 957554 (2026-07-11T10:39:45Z), 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/GBKQU1712831.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f859676e212c55843507bfcdbae258baf63f16d9d787c1f8501d5c9b5d70ad3. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAHQJ1905909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0104091463afb63873be813610652ba947d2d0da6a60b866865ab82ab7f4adb. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:20:14Z), 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/CAHQJ1905910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd38674eba5e939b0374721b13fefa1de54e5b3dbf8c4b90420d60fd8129827. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T18:41:59Z), 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/CAGOO2206439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb16f4a18b0bfdfee5754442d3058a19490b0eac45541e96a1f2a45644f723c. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:46:04Z), 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/CAENV2219856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87b55f44814c3ede2f9a3f6784e9094556cccb82f39163f3e33a9a1e991bde90. 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/CAENV2219859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0ad653944ad019d4e9d36fd62ba9fe447c00519f4f05661345aa291faf9071b. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:00:30Z), 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/CAENV2219860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ebed0075795c55b8f8d8e3873a494217d254e108b72008c60cb3d2c39c9004e. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/CAENV2219862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f585a722208dce5faffb7ddc0ef70f3c953d084c252f964cc5bb9d65aea388e. Chain 2 (Bitcoin): anchored in block 958918 (2026-07-20T20:04:04Z), 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/CAENV2219863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8d0d161f7561f867c287be622ec725b6209eb7789f03aa460b9e106bc623251. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/GBKQU1951186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335b37576f273a0992e95fd1fa32fa34457cb7f3c7b35a7ff8dbc404233a45c9. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/CAHQJ1926703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbecb2a600cd25e4080452f2c1122e01d66dfa7ac7d0440541f20bbc18428bdeb. 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/CAHQJ1926714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc069b819ee0268814786cdf16fed1c9626abf53a954044f082f10415751f88fd. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/GBKQU2125710.
Light Is Gathered From the Darkness, Prayers for the Next Era
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de9647d7803f34d228b02463a22c903463450cd0dc3d737dcb683a19ecd3c4a. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/GBLV62412529.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc553e71e6d18a1a4b7504411ba6718a40d7772ec2272fb608de3ebb75aaef18b. 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/GBKQU2125911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb307e4eefeb5a7d70b1031c59467a5f2d3c76948ca16a0c7653e75f2afc3e695. 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/GBKQU2045525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe47629dd6fbd10303ddb1613e2f8e9d9ee0414ad6d8324a57c9c4315a557f8db. 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/GBKQU2125765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2c3a8b875cc555552865bb095428038eab32a2ff18cefd1b5ada716f9709e2. 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/GBKQU2012717.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6beb2c48d8120679c85e68821347015d1e69fc0f1199ae6f82fa42a7f4d3f100. Chain 2 (Bitcoin): anchored in block 960468 (2026-07-31T21:25:57Z), 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/GBKQU2045582.
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 0xc44196fb296f12f10a4f1a99d21361dff615f20717ac49fc72ae23f5df7f0aa8. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/GBKQU2012710.