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 0x45e788283afc7b3d657a1a5a1664d8e5d5412da61f64e11434d6910b2a660a1d. 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/994865e4-63ad-47a2-a768-3efa770d087a.json and https://artists.proofprofile.net/proofs/artist/994865e4-63ad-47a2-a768-3efa770d087a.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 0x132d1f4cb44b7c8d2cdb9df333c536f3cfd873bf945b54bb9250dde4590d9403. 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/CZA169000414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfe546b06f45a0f38e3c184127295ed0bcd7e1196fe143cc973e76ae2f5b13f83. Chain 2 (Bitcoin): anchored in block 957695 (2026-07-12T11:16:12Z), 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/CZA169000423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa1ed18ea0e0df1b6d20620d687fa4392a7a7769df6b1467cca7cd1cf7ff3d5f. 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/CZA169000424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x814da9d72e86a82625a895c66e77bd915ca87c6a9e462f56d9b3c795e45f1938. Chain 2 (Bitcoin): anchored in block 956861 (2026-07-06T01:57:57Z), 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/CZA163305278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c189c0756a4fd882cfaedc1e0e6c6f1acb89fe2caf9c0603bdc6adf3feffcb. 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/CZA160405053.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1e97e30bb51b511a1c61df396e89df9ee2eae48cb5e701d5742fdf5cf76c5b. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T00:35:28Z), 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/CZA160405056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ad9ecf1746dc22da46d79034eba689486206b52c63fe2c981c2115cc5f69ea0. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CZA160405057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x384020cbf4449127b420231e159a083bd5d82c1a1c224315f2585ca4deded70f. 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/CZA160405059.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xabc3b79b6b461b8cc5888a07ed89e2bc6ac1abe66d7cc83a57ce7b65e04b544a. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:33:26Z), 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/CZA160405061.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x685e404e5d54c72462babaed21e6087db824902c649c8ab0d947981faaace27c. 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/CZA161541820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2562cbee7263124114a8459f677601d8bb16610354cc9aed56c3ec8337961479. 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/CZA161541819.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d1205b3bb5f9f2bb1961681dfb6836be159ad303a5fba31cfa1662ce3747715. 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/CZC140775604.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbacf0fd907c8090b8e15aabcf03cfb560150ca52403a78ae67c0df5771c80339. 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/CZD681300035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x093ef4dc1333bf1e0f05cb2e63a12a5f4da9a281886eef3b9b60d8991272bd7a. 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/CZA161540899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025b95e176a5e08eea373c7bd44d1f5b083a6aa1833a2d6b1ff4deaf76a36ce6. 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/CZA160411334.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x463578d8a7b613d03d4dcc39328ba2bc51a9cc0b9af14b91881533154218865a. 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/CZA160405047.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6eaaec0a1ce2c48ed63e59906707ac5765f1b9c4054db8da23517e7bfe1bea6f. 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/CZA161541818.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b5aecaae9b9ba7e6c5058912f1479e8701693d253aa9e2af9cf4e0d5bcf46fe. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/CZC140775605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a56caa291e65364b9cb84c954f176f07747ad5120e002880f1588249ee9f35a. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:07:48Z), 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/CZD682200030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaa78c41d001ff4903e3e8261f7ce4e1ae76838bf36bd8e2c7326d0cb6efd60e. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/CZD682200031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x164582c060b1073634dd7a76c779b8686d0d4cc79eaa149befdd1ea4a3be2459. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/CZD682200032.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37640a20f837139f738d51ed905d7be085dee8aacac09a58c6db9e7ed90d9757. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T03:00:21Z), 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/CZD682200033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cc1574cb1687ac57f9c97669b3dc0fe4b5533c13be1230d23a17af69e25313d. 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/CZD682200036.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58c9cd50ff6232cc4a64a5150ab4f9112b3aeaadf06d4597287e1eb9791571ac. 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/CZD682200039.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x025b95e176a5e08eea373c7bd44d1f5b083a6aa1833a2d6b1ff4deaf76a36ce6. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/CZA160411334.