1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0xb481de51ad7566c42ec7ffccb5c4837d5ddaf18f3d28d1fc2def90154a273636. 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/7b912929-9994-49e3-8ffa-b98c7a9fe913.json and https://artists.proofprofile.net/proofs/artist/7b912929-9994-49e3-8ffa-b98c7a9fe913.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 → block OTSBitcoinBlock must exist at that height 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 0x5ffc2982c0cd752cc9079b8c6cdd2c07c67fc5b4da18679323beaf7083c4376d. 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/US3DF2490896.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35435d56ab68870a7318bb82a46bc26011282ae00b5d9cf495d742d757bae61c. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T04:06:41Z), 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/USANG2403519.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1457c569ba811dc2cd3657a1a6724198e45d3fe48bad2fc7d2e8203137730cfe. 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/USANG2403520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02ae944153c7d6fa0c19fc0b2cc264206cbb4003a3d00beeb6c62bb8100c0a40. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:33:09Z), 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/USANG2403521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907e0dad0773096c90df22c1a93a973ab98821c237aae4026af561fb5e913f9c. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T08:19:47Z), 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/USANG2419574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d0b4e15e2b236f3e078f614150f11a3c534e3c8fec4d1545b9f058b4dce9be. 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/USANG2419575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb58946bab4cd6f8b31d50c05121e734ca2ac7ba9844c354f5811e926eda41e78. 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/USANG2425997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68baf392b5652be538e7195d2939166dc17aa48ca8a5f7e0c86c64c80e693a6c. 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/USANG2450729.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa15a083e293c57b157154e82762a72a161e7dfb7e73846517c39151fe5092293. 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/USANG2472872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49f2dab1098449a4b9276322b53b7d4c3399dd753460eb32caa3a6b7f2648074. Chain 2 (Bitcoin): anchored in block 958349 (2026-07-17T04:53:34Z), 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/USANG2472877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14363dbdd5629ce77b8d7f0712e30bb2e7b8533802dcf4a85f2ae5d44fb187ea. 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/USANG2472881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x335b572246f9b0951584cc873784ada17f195ee0c8950b0156d1b33d93120f38. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:53:10Z), 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/USANG2472882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca4b830540a187e36356c42a165e31bebf5e1b788afc5c3f36d5d7648341953c. 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/USANG2499490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7cfebb2adc7701484b6c5a2e46009b2f246a76968929d5c9334fddf4bcbae80. 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/US3DF2501176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5608198a34f44dfc2118b6abef34c2250d3a452eaf82ec1b049f375661405536. 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/US3DF2501177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x716f659fe826ec9a92f89d215693fe2a98b61f186e84cb965f8b1483b1f92c15. 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/US3DF2501178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9571e7c670e2855179f4ecda79d00bbc35f0b07265860cb63074c006b9daa057. 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/US3DF2511279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0aca17709ead3436cd1696c1d747e0179d39e68a3a2ea09f10b0ff88ffc5c0e9. 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/US3DF2511280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d77edd5780ec5ac026a17a3ce3f297bcea920261f506ac8c859cc85bd64f104. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/US3DF2528206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8510a8b5997266fe0e0fc4a1c0be78d7ff2a73b5d44355c0c1d4b6157c29c03. Chain 2 (Bitcoin): anchored in block 958410 (2026-07-17T12:18:07Z), 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/US3DF2535162.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0863fa90d7fb2b90aa557eec70fd8e3ae69ea884e405913b567c26abd39bc177. 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/US3DF2535164.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c4f58a07d7f313211f42f5e341430f128d43c23d9a612445f8014b756fc458. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T03:16:20Z), 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/USANG2524945.