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 0xc9463632eba0f0f5379226b6887c625bb9473121d3489fb6299be53f5e1a9a0e. 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/01da91c0-3982-4860-ba03-0ec63315ddf6.json and https://artists.proofprofile.net/proofs/artist/01da91c0-3982-4860-ba03-0ec63315ddf6.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 0xc45d031d7f41d9c20a195aa96f3e1e3f0c50459298ca12fc167b3b8b4703ecc3. 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/RUA1H2432680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37d7c0378b28581cbf1bec9c9d56d9193c4368e1847c2957e2f90291cb754a42. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:04:57Z), 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/FR96X2471989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f8b50caae592b2c6449799c5abd5976f703debc13cac46d4c96b38b463752d5. 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/FRX872401456.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15a378e819966f08047b5501a0335d94e43c65756f535c05946f91d27df8cb2. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/GB8KE2417047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7d6b808b9fd10df6009e274561934acb6ea37239405048fb6644b7aef135f6f. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/GB8KE2417057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f6b940fc56c57b128f4f266a91d4b7fffb3a870fc0b72b81a1d32ff5e0aeeb2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-17T03:25:41Z), 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/GB8KE2425738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15d2fecb850f5e7b778aa7d09f45e5bdff440f0fe5d003cec2f6136c806ab16. 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/RUAH62427513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x303acf47ee02be8398c757b89af709ff46f3579ea953beab144b14b292dc7ec1. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/RUAH62427514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6fbc6cbcc1e9d758a1e32d27dc7ed305cc743ec7e0184e68b4fe81d2e3e07cd. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/GB8KE2506220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfe687a6abae1aa72564a0bcc2a6210574c0db21b7b5277a7ecb24db0e16ef77. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:32:15Z), 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/GB8KE2506222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38edb789e7ada3d73a1662ec734f671227c1828e68f7eee5c8f67ad21b18e1d3. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/GB8KE2508646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x585e3a1207dc6cab99ba441eb209ad001c8e3e44e2ab78675e930388283a4f9b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/GB8KE2509485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdca5c1e96e637c97e71477a50ad0a410f5bd533390532307d37f894638369e84. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/GB8KE2509486.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x31b805e3f310a4fcd14f22766c5dfb9f4653d2552bbb8b72a9e9aaf862bfa2ee. 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/GB8KE2513673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec13be5ce160b59da88211fcc364ebc7915bf41ebaf2cb1951afa4c576e4c740. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-17T04:43:13Z), 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/GB8KE2514822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47cd4c3beef96296bee28b73c0cb4967e96dafa9d9d84530d6c193850b34bebe. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:28:37Z), 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/GB8KE2518728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0b9443d0c45e89f61caaadbecb56faee7acb00a956f199475b2a6119057394e. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/GB8KE2520751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97abc25eca21ab120ff69e5ef22eea58857a4d3bcbc31cf6df80ddd79c8b33b7. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:38:16Z), 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/GB8KE2520748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ce2a4f877b082863b14e446fca8ade94179a0a1ebbf5694cd6a03601b386957. 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/GB8KE2521411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec987da2c0610f36e58bd7eaa5889694a814d63811b5e1034435e01967d7d1c7. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/GB8KE2521412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d3545ca8246b8570592cbcd908ddf352141ff5736affd2be0a57b1368b61b56. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/GB8KE2521413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a7d899681781c74e34b75c6dda83a700afaa738867e0c337a507f62f37881ec. 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/GB8KE2522370.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x327b9a97b90c6a65c19d2a94e6f24b78ee9fb6399e850ad5ee8745999cbf832c. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/GB8KE2523288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36365974b37f6d87b9c0d1e0fe027de3d6f4ede4060f764d89db360557e77da1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/GB8KE2523289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x089e1b3a8e3b64e51f55e2a5b86d4de7e74a0c0a86a319019b5be5f4abbfaae6. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/GB8KE2523879.