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 0xdd71e6da02c0d8566de4025ea8adbfa38aa82e82c1925c34c1c7f8227e46866c. Chain 2 (Bitcoin): anchored in block 953807 (2026-06-15T16:39:18Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/ee667968-f936-4963-af45-ec2a44485d73.json and https://artists.proofprofile.net/proofs/artist/ee667968-f936-4963-af45-ec2a44485d73.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 0x4f413d3d49222e2a9005cd42f9e478fb6f1a5557f90de757841c2ddd47ee171d. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T10:03:21Z), 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/TCAIQ2409542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf02e82faa90d9343cc26aec471e43ecb35764b543a1ddad6f6f569190d3b27c3. 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/TCAIQ2409547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2a197552f1626aa4ddc0cfa597e7e254928381158fa8aa60e79ae39dc2c28ad. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:56:01Z), 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/TCAIQ2409552.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x545369640a734b1994012421f2c43f2fe821e756c36098ab508e960b42056e84. Chain 2 (Bitcoin): anchored in block 958977 (2026-07-21T09:03:57Z), 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/TCAIS2409558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ad9bee53e1e4dba80ad0427b44b31855ad5e62c8b16d738d670f2b849cf0dd4. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/TCAIQ2409562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55078b4f1004d7da46df9be0c6ca0d04b793207592d0d70442120712f887c85f. 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/TCAIR2409568.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde328977cd18876a06069c7ae5056cdac2929a9cb19429aec33b0b119f66fffe. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/TCAIQ2409576.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cda18db9ed573e3780d6d9fc35325b2d575e0f2508bcd660c33353ff32553ae. 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/TCAJB2480743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdee798e71f16dbc7e62d04adb41fc2a86e7e8ff0e402a6dbdc3a17eee1921894. 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/TCAJB2480751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad893e2021347d2f9319f6f765094e444fd5a2b69ac3ac9fa01c39c0b20de9a6. 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/TCAJB2480759.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde20da4fe9f6d30c78742e3f7b399ef2cfde581b38169c278e895e5335f3770f. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJB2480762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa510a57fd3ef824d9f3af4b92b05bf968ca9994e50f7504049db079ce2902a0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJB2480767.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d5fafef0e7b024b9ccf9d474e10188821b2ddf8ffe768c74bfcd3dbd079ee76. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/TCAJB2480774.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb90f854cdccf91e19318368747be72ba3847ee85cbd8de4d5c884c106633001. 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/TCAJC2480777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0a288f288fba7aba252dc5e5c0b5a8bc622fb634261603e8996877cc80b9f4. 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/TCAJB2480784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80f1d338329cd5ad94f8099fc46e416607f4ece09583e9f21e069468729e396e. 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/TCAJK2555539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x639976b299c0b78c2e366149a4420f0d7283d27601afcdfb171c0b309980e21b. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/TCAJL2555547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28a020d9399d2544da523f7e60fc32fd93bb94a628c69e3e8a994130326a14fd. Chain 2 (Bitcoin): anchored in block 958363 (2026-07-17T04:34:46Z), 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/TCAJL2555563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf0be41ccd58c4d4dfd48a6056f72d73a6ea55986c7b56fedf60d0a4dc3ab978. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAJK2555569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25839798348afb47c7ebadd44431a9515f979c3bc7bc1d1903e9850af00ebbe. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/TCAJK2555577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49af9de48bfae70956ade9008b2a36ce95764037d75ae04e45cc8aede89db70a. 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/TCAJK2555583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56ec7b43d6c69f3948c3f1fb5ed0d16eef20561c473668d0681eb59ae1e3958b. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:03:47Z), 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/TCAJK2555591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a17388a00cb568a476de4fdcc98ad930053860cc0b5317631a4418ab7a8637f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCAJK2555593.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x491f812de8902d86524fe5d02b158c0eaecffb2d5715e53b3cbb40b91f5cc25e. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAJK2555685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ec1e2e5cda97081e6f67162085246b1502ad28152fcf10196d47464c8eaf601. 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/TCAJK2555691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e7ad5998dd76f0617ea3b587717e6964ebc4cc3410a53f262d62c38bee81169. Chain 2 (Bitcoin): anchored in block 958366 (2026-07-17T04:59:09Z), 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/TCAJK2555695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69a58e7b89c36dc8d3b42fbd768fda55fffcb2704bab848d04fa96501d5c5abe. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/TCAJK2555696.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7861fa9ec5828ab477ac5770fe31d2aaf9fb64e37b8360cb8f71629941c7119. 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/TCAJK2555699.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12f4d8b277a41e4205b4f7c5a6690183dd645ebd5da273a8242321f12f84ccb0. 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/TCAJK2555703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cd468b3539fa577f36cc424c47a4b65b1a38b47b97593d689d2b025d3837b68. 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/TCAJK2555707.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x730083340d8075da496288f80644de4c8d4fb6d493585e5afdc110b18b1ed340. 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/TCAJK2555710.