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 0x5711c79b71c9fd7ece8f2f12b29776df74f5435e63d97207f648966ec6504916. 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/fd433e1e-5bf4-42cf-bd8d-649302c3b922.json and https://artists.proofprofile.net/proofs/artist/fd433e1e-5bf4-42cf-bd8d-649302c3b922.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 0x228ca13a845d37ed28dcebb8ab3dae09537516bd9ca5ffbab5dfc22d1fced46d. Chain 2 (Bitcoin): anchored in block 956405 (2026-07-17T04:18:19Z), 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/GBMA21865658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c6d6cb71416251e3021a6159a5220dedf1cf2f757904e4618668fa7153c6d3a. 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/GBMA21868746.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb23e62546257795a8f75593d5f11766822abf54136113ac99331beccfe43df18. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:51:54Z), 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/GBMA21868748.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ca5a4cd887c1e4d4235391d20ec67aa7b91e2e7ab8fcee7a18a7d331721d311. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/GBLFP2041829.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5d913af047011a12889e7e7fcef64f67dec1f2ac404af0a352f192a818a758b. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/UKXN22098751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4bd583ee7d732cc3ec9b24dcdf2c931453a800349325f422efad489d7ebb554. 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/MXF152100472.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e1effe873c6e195403da7665c95dfd8b1e5e682758d99a208e4444d53d5be73. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/MXF152200094.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d23e5e181d3d31310d307780baf98a4ac67f5e9249091548a84381f0e9a8f1. 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/MXF152200096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0146f5d73203071eac44fbe10514c4a2b7e7f84cf8ca28218b112fd520c19291. Chain 2 (Bitcoin): anchored in block 958846 (2026-07-20T10:46:26Z), 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/MXF152200512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5afe30acd2e8301104bf2b9dbe9b70c605e2f8e836c42dd86e03de653b86d93. Chain 2 (Bitcoin): anchored in block 958696 (2026-07-19T07:45:31Z), 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/MXF152200573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0146f5d73203071eac44fbe10514c4a2b7e7f84cf8ca28218b112fd520c19291. 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/MXF152200512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2503f89614e7a3a31d8ec413537e63b559872dd7faf908eb2659581b667f8339. 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/MXF152201194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829daed6cc72f2da4dffcec6ee998ac88f4ec3261a72d13a836efd4de1ec7c49. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/MXF152300457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc3a82a30bd5bfebef71cafb7760e0e2df72bc590c0eb54ba3db6f295ae2f2f3. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/MXF152301153.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af57583f1077eff0d065706d8c00fb11bc4fc960c8375f2035ef30c829ded04. 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/MXF152301585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x834e8012c166deb1a856afcab191867b76f6507c081d5ff48ef025e7b0e36077. Chain 2 (Bitcoin): anchored in block 958075 (2026-07-14T22:55:31Z), 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/MXF152400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417578c403d9a32a30b77d14244c57e19d031b7e485ead3d117e0785ed7de834. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/MXF152400239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0af57583f1077eff0d065706d8c00fb11bc4fc960c8375f2035ef30c829ded04. 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/MXF152301585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x00b693dcbb073e169fee78b6efc87c3cd20bf425ca7c16ff02e81f6c09e7dd46. 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/MXF152400241.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3d20fc03649fe9e854dddf983170b8755d3fc71437729199722ce6e74bb63491. 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/MXF152301352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47128186108cead29b9d5c24d1deceb10db067ddf1eb84bc0e94527181413704. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T08:26:58Z), 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/MXF152400244.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x290e11ea0ab297997f13187ca30c16c233f5fad7d7d183f7179e075e1c96049a. 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/MXF152400109.