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 0x73e7972357cab07a362af5dbecc0fb5dac7484e11bb2d5bf47235aff53e190c5. 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/f0fcf751-98b1-485a-a65d-81e1dea60c30.json and https://artists.proofprofile.net/proofs/artist/f0fcf751-98b1-485a-a65d-81e1dea60c30.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 0x557a250dd829d5a72db07980b39eee21fe7d36d10aef9866fbeb0d8bc6eab4c5. 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/BGA471908777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cd2ff0244ad17ef4ad1a01207b0017e5b2b08d20ea5e69ee72065162c91b73d. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BGA471908778.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9e07009f427144f4a116f27b24ff62f070d3d6fb85697b708d1e234c489452ae. 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/BGA471908779.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d03edc10408498caac5aae02016df918daea7aa7cc36d3243fac0b1d701539. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BGA471908780.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bcfde49924f4b0b1b58f57652e0cb68e704f15da5cd47aa0c0675d758f8ed2d. 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/BGA471908781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdac5144cfdebaaf71442327603839f0e698d545447acfb6138ca32a3a00ce55e. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:10:05Z), 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/BGA471908785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71d071369f7a23fb92a0c5b8bc85d387f715b18a2dc7085c359df3cba8a9825d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T19:09:00Z), 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/BGA471908794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95e9c47d9f726c18754240adf2ceee9a9e40c1642a209eec2178880108dd4f99. Chain 2 (Bitcoin): anchored in block 958907 (2026-07-20T18:53:28Z), 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/BGA471908796.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa14135f2742350f024112fc103c4a22bd87aa993849e2204564d981399fcb817. Chain 2 (Bitcoin): anchored in block 959031 (2026-07-21T18:43:14Z), 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/BGA471908797.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0833ecb56149c156070979d25fc1cf48f6bddb0d3d851216de146a734eb74647. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BGA471908798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b05e21dbe864223b3ad65e6a9cd2623f0cee3a19e63efb0b00104bcb4526992. Chain 2 (Bitcoin): anchored in block 959100 (2026-07-22T07:09:12Z), 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/BGA471908799.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd415261979cb28d0cec0dbf1ee7e9b35b00e87b5a6f7bd4cfab37946ce8975f. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BGA471908800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f2d9f51ea25a23a3fcbeffb520392b3d8a3f2a3e562c0c48de67c59ce97f01e. 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/BGA471908801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafcf4e99ebf8061cc5624b7abb0d4df31216b2c5b1473c00fdbffe77f25ea219. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BGA471908802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c337d39fae3233965c7c5caaba9efc00da99eb37a47267d8cb8c25ce8a20a8c. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:31:16Z), 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/BGA471908803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc7e8a56a5cd1e8660e3c236aa74cc9fb75cea27e1b80143afdbdc0f457c270d1. 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/BGA471908804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a4b13262586c148752890acee2b097a91e9fe490ba2937edf23ca870f287673. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BGA471908805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x417cd5b3a5478fda1e522c8b5f1076d711da384d588b93b5bea33b5e8c30c428. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BGA471908806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78fe0edf8f0ff9357873aaef1b61c10fda4954eabad25b6dc045f143f051c95b. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T11:41:42Z), 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/BGA471908807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9cdfd09fa9e229bdee2d5c5409f1f0c8f78a1284f1ad78ac38e28a1c6b1614e. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BGA471908808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xced53d4a7fdc5ff86a733d31d6ae35a9b0ef56a398847cb58eb5e80e32a5fba6. 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/BGA471914644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x35ac8332e6860d650305a1e3a909055ec627e3a9be7b2d5a6a3ebaf56310122f. 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/BGA471914645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ab178fef4269fd6e4fe2ef89e04b5070e6a8feb2ff86a40e053f34a169c905e. 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/BGA471914646.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x16c6c6e642a64ffcc48bfa490f26e4bd113b3ca4d8578131ad31ba30259de099. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/BGA471914647.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dd07f0caf0ac4f8f52da394ccd839f90a9d4a81ed27464e6c5f8684c2766b7d. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/BGA471914648.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7785cdaa4695b1e6e61ae800f6a0d031eab5898b99c994f2b018b2c41a3e348. 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/BGA471914649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x43a06a127e0b3465551c3642c034ea2e26bd016a56fa21192ef02692011f711c. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T18:09:39Z), 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/BGA471914650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x924e6bd8fb77839dbe1e7fd4b77351b85dcc226f6e6584e3d53b1687cec20a9c. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:26:51Z), 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/BGA471914651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3001542ebfd8c382fe3a07229af0e0f233b13082991d6657e481485c2d416b95. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/BGA471914652.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ceda2567eaf9a106679e18d2bd192aa54988351c4e7e5cdf23b78ebc1f823e. Chain 2 (Bitcoin): anchored in block 958662 (2026-07-19T04:43:15Z), 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/BGA471914653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33875ca511561e3af472e68e3f2edce4d7d593a3225d56eb5c3b2dde050e48fa. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/BGA471914654.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x141fa03f0a3dd2ebb29ffc7e6a9231710324a5499f36816278391aa3ec964599. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:17:12Z), 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/BGA471914655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf749bd9b21e919d4463208e0aa79e7aacf4096610bf90a23d79398ad72719395. 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/BGA471914656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22a69352ff6422cd03f2e0f156d1ebddc83de5256917080e0a175dc3254a3282. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T05:10:45Z), 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/BGA471914657.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd30b846a67b535b9f9ede5f81a55c0b1b11a110728afa1ba2089826a13955ec8. 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/BGA471914658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x497d7a3ea3ccd5db84e538a58cc55f6067773b8d854a4083f39adc40f699baeb. Chain 2 (Bitcoin): anchored in block 959105 (2026-07-22T07:41:18Z), 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/BGA471914659.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d1853d5ad547217e8cac32883ea6ad9ed49fcea7a47b88d694238d1acd0f04d. Chain 2 (Bitcoin): anchored in block 958857 (2026-07-20T09:45:25Z), 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/BGA471914660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ed07193bd3bdd35ca1b031e6988a74f5cf1c79a5eee63f29861597a0b12680e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-21T23:57:35Z), 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/BGA471914662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fc5f76b0f98015e345029cb1855a8459423760c8f814b28a9db4540136fcb1. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/BGA471914663.
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