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 0x886b0b077b708f15277cdaaf2dd031752c99d3b2a85be7676db3bd4f52cd971f. 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/b69c3829-ed9c-4b9f-ab03-03cd5b5950b0.json and https://artists.proofprofile.net/proofs/artist/b69c3829-ed9c-4b9f-ab03-03cd5b5950b0.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 0x59fd5164580902e829111e937d8da94d75926f8bf5650be28554615823b33046. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:00:44Z), 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/QZ5AB2197326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3576aa6b3da8bf3966537e9433241208dafe0f789dd272516e6517a597e1066e. Chain 2 (Bitcoin): anchored in block 957741 (2026-07-12T18:30:59Z), 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/FR2X41943363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd45863dca59a64921b825daf7ff9823e0a8113041801189d4402e34f5d0f233b. 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/QZGLS2030798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6358234cc6b1be5fe2f3aaae57e768a76f7364093d2d1a2f5db4d7f7514523a5. Chain 2 (Bitcoin): anchored in block 958808 (2026-07-20T02:49:15Z), 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/QZGLS2030800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1ec8d2aa613a6f088ac4b67fbf80646a9056d1e103d223fafcc4f04f8ed2872. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/QZGLS2030803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa47dd632c7a85b4fcab5b519c8c4d95331bb0f3da0cae24cec2fa99f081b7f9d. 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/BRC4M1903514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fec851cbef04438ef87e5bdfe1f20650ffb8f22b11affde570bf589c8bcedf1. 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/BRC4M1903515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x655fb8647a375f6cbddeed75ed538aca95a91983f9a9813e4610c00f1b6f44a3. Chain 2 (Bitcoin): anchored in block 959076 (2026-07-21T23:41:40Z), 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/BRC4M1903516.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01469a7986a51ac29c203bf1b4d1a646df0c9ebdc72bc26fcf61ca154eef7c12. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/BRC4M1903518.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd948a89c195f716545ce4b43202fbe6ecd546fccaf8a2e1dbadfafbacb2abfb8. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/BRC4M1903520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e3f3e0768f7d2bbafb76e0f01716e50fffacf5424d729bb420e69f1dd0c9e2. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/BRC4M1903521.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda348e62322f468dc29f6948bb1ef15a3950d83d1aa69d700a1336761766f246. 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/BRC4M1903522.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8d531bd68fe1e37b2c99aea6d297462ff13da6d0506f54b131aa81e619103b6. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T04:05:40Z), 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/BRC4M1903526.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x59554f238676bffcb935dd1e3351c23f8902ab793e2c5068ea7741048d8faa15. 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/QZGLS1943762.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1cb044af0f18034ed0f46afd5328932736623f0cf8a633cb59241a44e6d8f4c. 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/QZGLS1943765.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cf68c85baba4e9f3ee9dd1915af0cae32ef74d45c4eb0a8633d3f7a0d4e1174. Chain 2 (Bitcoin): anchored in block 959073 (2026-07-21T23:25:37Z), 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/QZGLS1943766.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e5d72b8ff8879663cbc521d6cd403ccd65f939596dac8559ce17ef922df0457. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/QZGLS1943768.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d0efa201ab36580e8cbf379083b4530dc9d2f89d8ea489eed9435f89855b2c6. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/QZGLS1943770.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a4fa03f43fc8013898269be3b19dd74acb6faa306e17d82c23c7c1dd84451a8. 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/QZGLS1943771.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70f075a9cc0939e2a5ff915abb63a2da267f36a88d0ff06b8f2439b0e00c2344. 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/QZGLS1943775.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc45a608019561d955c00d56ab2ae3657df70a660c1d6f874b80d167628d924ae. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZNJV2187364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x790ad7f115f5a427f396fec8f5d3541f62134b59593bb28cdcd029bb813afc6a. 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/QZW9N2264870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fcda736f1a29aea1fe9e0e999dfd87fdb977b4698a2f05a96e7b00f97a85a02. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:05:45Z), 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/QZGLS2321541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c8127e76376a8f5b0e79b6bf1acc8fb29b745af47584a2c2deb0e60ab68a062. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:40:06Z), 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/QZGLS2321549.