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 0xbfb16d6e25a271edaef2e29742b26b615c46750635c886cca0e2c72f0cf6f772. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/98ca8422-cfab-4cd4-a46e-f936d587cf9b.json and https://artists.proofprofile.net/proofs/artist/98ca8422-cfab-4cd4-a46e-f936d587cf9b.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 0xccefdd2b9d529bc9ae20a992fd49ff1fdf16eb61bbe8d4deb294934262e19ca6. 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/USHM81295710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa82853825ec0247cd12ebf4dd1b324f8bef48e8a0c5de956fbbee415774e6e70. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/USHM81295711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3d6092b51261d5bb6b350ec69714a5705a757e060d53eda98524427d7c2908f. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/USHM81295712.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9db86fa398f5653d6c77ceb17e4bebfc9708b67ccb057bc913a4289cf9cd78e5. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/USHM81295714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9ada0a8c787dc2bfcc418f53152a798e9165428af85af43f8b8881c156e2c34. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/USHM81295715.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb541d4567f73facd372dc554015c9132a6030bade0d5fa5c051d5e28d34d99a6. 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/US85P1523302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb77b3bb4a64e41f042d7ab39b8ba8e3007fb7640568dea9453f01e7d17c4639. 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/US85P1523303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6aa6f97059fd614a302584fdfaace67bd89b803760d97df2ba079fe794c3c2. 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/US85P1523305.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b92b2b336a5f548860d8c012cd8f933a4cb8d885f93f8e950d1008d5cf7d050. 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/US85P1523308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x543096919d8c89532bd63978468d6f5ffa773b465269e624242202f5379ff458. 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/US85P1523310.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5b43af39f95a7b4e3bd943de742350e4673c6292189f8ff01c185fdff711544. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:48:08Z), 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/US85P1523312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f36b9b4ef9d5dadd76b2535dba1e72c63effea20591f2fefbc772c06f0e43fd. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-15T23:24:33Z), 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/USCGH1560914.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7747bea703dbf7e0113df9bb7a3e61de89a9a916cce93ae578fe0f9f9591feb. 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/USCGH1560921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43934d9dc7fc9426dfcb669a0c781a51135530e5fe9879632a4931999889d1f3. 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/USCGH1560922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e88aa2990e29b786106efafd99d6877888f5bee6f34c9dada2cab5b0a50d6c0. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USCGH1560923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3257317ac13146422ae8655e0b7cd9828d71a5baafab862da6f05d6a535a0dcd. 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/USCGH1560924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7c47af482c9f2db44b9ccc462d1d0ebeb66b65540a0fa4e05335a9e72b9487. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/TCAHB2379960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd450cbbde79ddb0b3274323e14bbe7cba541e2616d54d3f6c0b09f53efaedaa. Chain 2 (Bitcoin): anchored in block 957702 (2026-07-12T12:25:41Z), 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/TCAHB2379963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffaa3965f97097171043d9975fc4afd3632d0655e1a5c673913333d3ba84004c. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/TCAHB2379985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a07673c799cd55ff96e1c827ab9c55fad064b9605dcf7ead86d40765622dc14. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/TCAHB2379990.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28be1c29c2c8d549d00a78b0a3d1d4a27a77e2ff5b0160de6dd26a07e99be201. Chain 2 (Bitcoin): anchored in block 956402 (2026-07-17T03:26:05Z), 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/TCAHB2379998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e40c4c3e164cf9a8b51bfd3a3ef58c6032983a2b1b9445151e905665fe3156d. Chain 2 (Bitcoin): anchored in block 957705 (2026-07-12T12:50:42Z), 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/TCAHD2314170.