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 0xb79aeddc1b5cbe027b1b6a9c00f964baa573b088464a46b575950ce102785e43. 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/df2dfdbe-5a50-46c1-ab61-f590d328a2a6.json and https://artists.proofprofile.net/proofs/artist/df2dfdbe-5a50-46c1-ab61-f590d328a2a6.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 0x4b1d7e7bc67eec6e1b1b4d4a1782169ab5ff6963ab1121526358a65142f33ba0. Chain 2 (Bitcoin): anchored in block 958074 (2026-07-14T22:45:25Z), 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/ARF411800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b1d7e7bc67eec6e1b1b4d4a1782169ab5ff6963ab1121526358a65142f33ba0. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ARF411800070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02766b7e5f2a3d4b5702bdfb5a2db6fff5febd14a215b8a8b39a48cd413c0d85. 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/ARF411800072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x865578cdc2e522398f13452f40cdb8a7142b8e5d503925b07ef6bb65de55a847. 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/ARF411800079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2345128b1498b6963afff046929aa54d36e14c695aa20ee300909915055777e. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARF411900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecade94f3750a40c9101b04f916a3412bb67d94249fbbba2e7a488b8b167596. 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/ARF411900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8919012b003400051c1ee5a15c5c1e88ece35780a7ad128ec69586e0010ff33a. 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/ARF412000084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2345128b1498b6963afff046929aa54d36e14c695aa20ee300909915055777e. 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/ARF411900116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ecade94f3750a40c9101b04f916a3412bb67d94249fbbba2e7a488b8b167596. 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/ARF411900410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x220bb66c54381302b76af2047090dba434922d352c53f8ebf323435d3eaf010f. 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/ARF412000090.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e498ad73d57e83a47a57296fc78d03d1361d428d097c337bd86c3f9db89802d. 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/ARF412000091.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb9d791d63f721bdde682f83156abe1ba16687c814bbe7d1eaf532f3d3d3946b. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/ARF412100169.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa954365d67c2a1120477407ff93cbb0ee639d101aba624a5054e5f21f8b80e60. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMBZ92303969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0a3b79b7b3c8d9f34c43d0dfe68048b8b5d5e28b92537d547de166ba37ce471. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QMBZ92468231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fa0cc733296f3f8ed37273d491b5facb30f6db2263ec48dce3e7c16f93be149. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QM4TX2548902.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c23130887585f05a6253a996b1f54180ee911247efdfa8e4f40714d8f251da2. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:32:23Z), 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/QM4TX2548473.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b6b9fe41163bdcaa3b3fad9a47ae60897324a65aaea12cde756684456412785. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T22:54:39Z), 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/QM4TX2548526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ba37d9a1a02656d36a18dfbc95f8a190c0dedf2fe38b447c2afc07d8307c7a9. 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/QMDA72324534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02564ab5cc4fc3af9adfa500847c687774bce98d21f42e141c3ab271b76de31a. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/QM6N22445793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe46e0f8ed1cd770309f529ba9f003f6f26356269a6ec6d81e0652855fae764f. 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/QMFMF2359237.