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 0x93e78f536ccdc49d90c782aa439b3eef16a54b0b65ea52c5101c3ea1546f77a2. 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/57448d2d-1060-419e-97da-3ad6c4b95d4d.json and https://artists.proofprofile.net/proofs/artist/57448d2d-1060-419e-97da-3ad6c4b95d4d.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 0x22f4c4950c5a2bb23e3845633d1d724ba6c41f0739238738018df20ae5e12717. 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/US38J2319301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc75695266844a59803641d72d36244e5de459f43545d58d79d8087249cb9a0bc. 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/US38J2319302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15e5265a81a99c13d12d62cd92df10d987bcbee050ace0d4a47b0a1c58f00df0. 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/US38J2319303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2be16f8c55cd648cd6f2489aa679b0fb077b6cbb51f2318ee082513dd4c7ca4. 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/US38J2319304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb2d090123bf99318855e13e34792f133f671a72fd28d88309d235d484a446b1. 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/US38J2319305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x03eb08f54a610698b01bfaf5987f1fada285b9059ea8f0cb3155e53c1a93a27f. 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/US38J2319306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0091db446f6e31dc217efae42dffc3e302ac5812da62af2c3efc1cc600a04037. 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/US38J2319307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7981bde48128a8b18ad8b3b2884dc24a5b6fc640f5d1f82e6bedaec9e282883a. 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/QZES72143560.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd7bdfa375760fb492ae704fc6016e38752eb4490feaf2a15ced2e8aa3a6ff9f. 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/US38J2218722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d253146fa5de76f15d126e477e32ef12c0211796bbcfc4373791703ee822e0. 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/US38J2218703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a54d9b1e1da023328b0904154d2a7138c850ad2a6990bb87e7e0455504d8a1b. 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/QZES92152814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6141046f0ada4314544c64c06c753b3b9e700d9a73420269d4c82576af77feee. 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/US38J2218705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66df965543e9a7467ce6d069deaa09a331b32c1d41eee40f8ee4799e9b77f3d3. 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/US38J2218706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ad4001009193cd1b5504a7f13352b2b5cf5d169d695410068bbc5fde7c614f. 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/US38J2218707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2634f8d3fc4299b973ad0ffcdc0865527100d1aa615267df880aeb931fe0742a. 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/US38J2118701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x656cf634cc8ece94b4401a2ca3135b711238aa05b7565c0c61213fa3222613e3. 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/US38J2218709.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65931683f667a54a734d44e88ffdad74846faa6aa35fac321c19bdd2584e8212. 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/US38J2118702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491c55f8415ff355adfe79e9b8c0f2df62a0637e3bbf594e37917995ee70cd43. 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/US38J2218711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb402b6d4257bb06e8c1edb93c4609e695bba22f5fabb3068276d6147f325843. 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/US38J2218712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29d8b6a2161aadab3a436bc8272e0d6c622047f2d9293d6a0e8f2b2ff241a243. 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/US38J2520107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66df965543e9a7467ce6d069deaa09a331b32c1d41eee40f8ee4799e9b77f3d3. 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/US38J2218706.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d625a32a3e2c188a7631ada265b09e9e5e83c06fe617fd40d33c6c46295ba34. 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/DGA052457306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14536dc81730ed20bde8e1c08d070962ea85af8114c3d10d2cc27d6b3e210c61. 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/QZMZ92360189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf5fe581d6ac775850f339073e51e9600700864b620eff072d5921391722aaa4. 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/QZFZ72507624.