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 0xf4f307df541b1e74b7268bbbd43e577363dec7577f4decde15a0fee99d28bf5d. 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/480eb65e-fe64-467a-a5a9-875d300c5720.json and https://artists.proofprofile.net/proofs/artist/480eb65e-fe64-467a-a5a9-875d300c5720.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 0x70fee13f0cd5fa3b5bf35865b97691b94f76b3fe954d2984e12e218dc79d57a3. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:01:30Z), 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/QZK6J2281420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bb16e544f1388c1b468a94777af38d621f408e02ed1ae7a0fc6161a6a01eb2e. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:09:23Z), 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/QZK6L2440103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90948baf3b5b405b73207748eb52b3e3139231f4cc53c908867383b44c71c39a. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZK6L2440105.
FORGET YOUR SORROWS (AND COME TO THE RAVE)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c3bad692846f527700a8f46e8790a8fb158d8d49c8cfad49a2ca8b32060a6d. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZTAZ2481468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b762ed6a16d31176a77892ef9e96d431294d8ea328e8f1dd48171e3f7e681a5. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/QZTB22423729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ffae344eabf997c93fef3ac51912d2dc61b9a76624dbd8227fd6ee2a5aed42. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/QZWFN2430104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55ddedcce0c6f7dfed36bb4fbcc038721462dceef98a1be0f8cf6b1d118336ad. Chain 2 (Bitcoin): anchored in block 957801 (2026-07-13T04:17:08Z), 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/QZWFX2411579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e0908d3dfb4746b7e1124598d359ff9c584225971bfe75afd350039d45201c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/QZWFX2411580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ffae344eabf997c93fef3ac51912d2dc61b9a76624dbd8227fd6ee2a5aed42. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZWFN2430104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ceff7bbe1f9ded26ab88243adc351afcd4718946a0c482ba93573c9cfadab60. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/QZWFX2411581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e2f9003e0515c38c8fb2dd11981ee21833075f117fa5b2fce330121c31f0beb. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFX2411582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf43b77976d7a1ba56c876302c0f99efc25b27387e6fc7c8b45d17cf30c6b643. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZWFX2411584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf050523369a283db50af05ede477a15c607b0dd50fabd1d49f4d06fb7c03e2f7. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZWFW2428886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1865a398c06d3e174b9f6aaaa54022f2e270cdc6d45f68d2c4ed30860a147b72. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/QZNWZ2599795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17862cd19c951ac4eebe1e01784dbb13220c56e0da2fd1bf76f62c104277e65a. 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/SE5AJ2201927.
Finally (with Alicia Keys) - Prof. Stranger Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f0c12521c205106fe5ab0db06c277e7fabf044c45d3d39bc690a38d5356612d. 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/USUG12408023.