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 0x687d3bc8d3d88ee7ba731e8c94d00b704614d2bee8d6533bc91aa2f852aed3c2. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7b5b4564-6de7-4c82-9f38-1832340f8edd.json and https://artists.proofprofile.net/proofs/artist/7b5b4564-6de7-4c82-9f38-1832340f8edd.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 0x0ae202c0bd2c8e528b51995f24376129bce2485c814d6793375b25690ba75248. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/UKZGC2204167.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b845a573c0a7d8c5356cc3dbc379351d2cda1e967e1cd490492b6ae3bb15803. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/UKZGC2204557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16b9ed4b98d22f2bf4b83e46debbea10d1821bc258d092695591e92df5b98d0e. 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/UKZGC2304179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x296dce96189660a2ac08f5010d7b17b7edf14daacbb879b1cc35d029f9502637. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/UKZGC2304910.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbd4178c7fdf1f7a822cc26637b98b70939d83e0fb07790713d747172de37dcf. 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/UKZGC2304923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe681d58794a435a32203cd20a3243d6dc21ab0059bca3319de80ddd15bcdb20. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/UKZGC2307113.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff22f254691e6a40ec2b9acef40ac02dec45984cbbd988b0d1238c6bad70ef9. 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/US38Y2405808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b1d545a29945c9de8c7c41f97c326c661f9e1127f245023290180bcdd1f438. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/US38Y2401352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55c291d40e5ca98c495f97b0fe501fe344928ca32e224a3ac6ead257f2b16043. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US38Y2411487.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ff22f254691e6a40ec2b9acef40ac02dec45984cbbd988b0d1238c6bad70ef9. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/US38Y2405808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8b1d545a29945c9de8c7c41f97c326c661f9e1127f245023290180bcdd1f438. 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/US38Y2401352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e65e9e57e99d070c76bc6a90ad30264d5d7c23f69ecae3d698de30acc8b882. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/UKZGC2410941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d2402cfd00fb98ecb58e4f7d7eb3da8b5680213ad7cfb61e95c7c23eae41c18. 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/QMQ3X1800851.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3709a6efd77fa803406393e549ee7e4f962332380ed091481c68ca760b106a1f. 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/USUG12102026.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3986d51e451852c4f97d49e8af212e91dc60d5d7fb253bac4ac0f374c3f34702. 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/USUG11902929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e3cb8341f37a99d8019f118434ba021d62bf8b5a33f18db6ba350c78650af2. 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/USUG11902934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccd66919d56b27b109133cf4875627eb3d97a7003c147c260287fb14c2afd233. 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/TCADR1883674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f1ade6f3791d03ec7dff0af50e57016d9d8231c275513e6a0ff3355b6bfae3a. 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/TCADL1881371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf67c30902e1bad7d7eae2cb281d7aa4179216f2fcf1cd80117f299cd23eaa99. 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/TCACZ1768785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f8904b0cdc80a7deb40eb33c0da78cc2316a29b161ec7442c44ff6f36b0bdec. 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/TCACZ1768813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7b36f41c7b697bd9e0b5eb7031d276158c5b77effb6bb33b618e9a244dda62d. 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/QZVR22400452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3986d51e451852c4f97d49e8af212e91dc60d5d7fb253bac4ac0f374c3f34702. 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/USUG11902929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3474119d68d8f89c8c977e5ecff9d3a94f89f574ff4a0ff1ab63112e73bb4031. 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/QZVR22300209.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0808b883d95003ae43e137d7dc15f87079cb39161bf1aafd99dc2c6dbba637ae. 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/QZVR22300210.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffd06244caae83a827788ef9175eb8cf910b3ab3cc2f92e55f733c17a4ed206. 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/USUG12106650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeffd06244caae83a827788ef9175eb8cf910b3ab3cc2f92e55f733c17a4ed206. 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/USUG12106650.