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 0xe07ee9d67e15682025b9373d6cb723cd32a9d37bc9650eaf86efc1e9bf655824. 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/126bac12-ba9d-45ac-bc0a-6c2db5676171.json and https://artists.proofprofile.net/proofs/artist/126bac12-ba9d-45ac-bc0a-6c2db5676171.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 0xf455f4688c32f9c758048cf44d651887a9437f0d13a5b1a64bb7dde4d2e4a155. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T18:57:37Z), 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/SE6HN2150527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe864d7bbc9105993a96e82dd3cd647c3404449bc728b24ec56c81506486db575. 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/SE6HN2150530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8d294dc05e5f31007b60dad0fdb2840b0ae9aa7761bfe1ac9b91859216c95b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/SE6HN2150533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3b3090c7ef46156336475dd53b2726fcd3d776b24bb312dca84307b8daeec8. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/SE6HN2150570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e7fc6f74c955e08a023ad517dc115df546bdce1a5eaecf173ce42f070a244. 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/SE6HN2150573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cf2a6d870b15a7df32854bc1907fb7052e6e21088be620a9221f91cb3a250b. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/SE6HN2150575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282cc88a89a43ead8e7dbc91c6aa9b4112cffbbf0e2f3c2c52ae76ea32031f4b. 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/SE6HN2150578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b16607a30845e8b1d4b6a7d12e9c8e9522154186de3304de72da48f1f1db225. Chain 2 (Bitcoin): anchored in block 957668 (2026-07-12T06:54:37Z), 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/SE6HN2150521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc211b4dda378089defa04947930636dd91eedaf8527698c6de00b06e3a485b4. Chain 2 (Bitcoin): anchored in block 957671 (2026-07-12T07:35:31Z), 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/SE6HN2150523.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3fab1abbff25d7f7fbc66a1d012bb863b9c2ed3e445881ab2af8a2fe8f3d5cec. 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/SE6HN2150525.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdd39f75f45e0fdd697d783ca89e4d6b1dbf398bd3861f5d19eb62d0984ef388. 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/SE6HN2150526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf455f4688c32f9c758048cf44d651887a9437f0d13a5b1a64bb7dde4d2e4a155. Chain 2 (Bitcoin): anchored in block 957665 (2026-07-12T06:13:49Z), 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/SE6HN2150527.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fdcf6ff6597c31f066c7f7aa44f98a64e790cda6cd626711948c3227ec1d60b. Chain 2 (Bitcoin): anchored in block 958069 (2026-07-14T21:37:55Z), 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/SE6HN2150528.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe864d7bbc9105993a96e82dd3cd647c3404449bc728b24ec56c81506486db575. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SE6HN2150530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b8d294dc05e5f31007b60dad0fdb2840b0ae9aa7761bfe1ac9b91859216c95b. Chain 2 (Bitcoin): anchored in block 958218 (2026-07-16T00:33:33Z), 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/SE6HN2150533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51770bf4c46fe4679e188548b2e3b89f3fc798b68170086f828fadfb0e7a2734. 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/SE6HN2150536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a3b3090c7ef46156336475dd53b2726fcd3d776b24bb312dca84307b8daeec8. Chain 2 (Bitcoin): anchored in block 958208 (2026-07-16T00:34:28Z), 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/SE6HN2150570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e65592ce9f15c45c5a0ecc01959faf2a43e7dca909a7405251c34ad0b6e9ab. Chain 2 (Bitcoin): anchored in block 957591 (2026-07-11T17:21:30Z), 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/SE6HN2150571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dcad0b6512215023ed0e0bff98019f889a36df22bb18cbf239e7224cb7e9098. 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/SE6HN2150572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc50e7fc6f74c955e08a023ad517dc115df546bdce1a5eaecf173ce42f070a244. 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/SE6HN2150573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e7e3ca90adf0271ee91822e7d62c7da24e24d42e103fb8e415d4ad9a4f8e8e8. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T08:07:00Z), 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/SE6HN2150574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49cf2a6d870b15a7df32854bc1907fb7052e6e21088be620a9221f91cb3a250b. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:56:12Z), 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/SE6HN2150575.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x282cc88a89a43ead8e7dbc91c6aa9b4112cffbbf0e2f3c2c52ae76ea32031f4b. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T09:44:08Z), 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/SE6HN2150578.