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 0xa141340033d80bfdadac7866debf927bea441b5560c7208660444b2404e6b47c. 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/f1c36899-57f2-4d1c-91ae-9d6a56f456b0.json and https://artists.proofprofile.net/proofs/artist/f1c36899-57f2-4d1c-91ae-9d6a56f456b0.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 0x382761122f44cc8f3cb1854ccee21427f76078f859bf8d5487328bb80dec91d3. 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/SEPQA1900076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb8ea50d2c7df663a3e8d39281000eec1b91595980d45723140b50f0013d6658. 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/SEPQA1900111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x965de5795bf41ba01a12af05b14e2eaba4c2a3b50324dc0769ae865b9eac7a81. 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/QZFZ42031371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5171b4327729dce03ff9b09452cadeb852a25b3d8b3f441f03c7ee5b68b2cd47. 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/QZHN42020339.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2b63b303b31141d8a0b10b0a711972b23f15520aa2ceb5f8df4af6a61c5177c. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHN42020341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650106cc40e82bce0b19a468ce77175f09a2f6206d7a0c850483f3db5ad61bc4. 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/QZHN42020342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe935dd4dfb4a1532a5ea327e60f6fb64b0a98c8400d07e2690bf55c88502ef72. 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/SE5752017724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71770adf76d48e6cc2bc2c6c3dff3d8b9962d826ea8c4ea85d75a9d8930504f2. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/SE6QE2083605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda77ae1c3d301d0147daaa16d30f9011ee44efe0d99a140cbdede73c456d2361. Chain 2 (Bitcoin): anchored in block 958351 (2026-07-17T02:38:05Z), 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/SE6SA2007137.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe07481db13737a8d92205c31a095aad3bb9dec4ef6b3b66e4c3bebbad7aa28b6. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/SE5752140280.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe89992a38069c4413cd31ff8e130a16e1b885bf522e95aaaa974350371c01cd6. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T17:59:20Z), 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/SE6TI2108068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8d4bacea232d633d5f42416aed58746fa6e3ab9639ad5e6c15e25a36eec56e. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/SE5752271279.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f0fabda30197f37252da5a93ac7997ef52616a71e7e4996485f2f2d51ab38bb. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/SE6QE2253618.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9f2748442eb92a160da6d1ac9cbd592197cc52ef6d548c2b7df15f586a974a2. 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/SE5752310589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c0b830d6ac96368d90272cf7f25687053d144b1e88cb36a40296dadb1fd040. Chain 2 (Bitcoin): anchored in block 956426 (2026-07-03T01:37:49Z), 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/SEUM72400919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd746b86a2400918c24770792d8c3172af1336e3e8d4779df7b87ae9188859dbf. 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/SEUM72400740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2639d38002bc50f3b12c39d903d656adb33d5ab6a54b0f8974e60c2c8e5ee411. 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/SEUM72400921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a43bcfcfa2a84ffbb5be2311857957e8574fa0d19cddc7e4a948920700c6b1. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/SEUM72400922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcdb91f1d9e65c6eae1b050ad6d0353f7e7d3a09d6e933fc3ada2943775b26d1. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM72401363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x841c95a7ad5fabb989bd7a886a104c55c1b67c371b170ccc32ff8c84bf32e4aa. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM72401784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c0b830d6ac96368d90272cf7f25687053d144b1e88cb36a40296dadb1fd040. 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/SEUM72400919.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd746b86a2400918c24770792d8c3172af1336e3e8d4779df7b87ae9188859dbf. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/SEUM72400740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x826db74a3e2d3b5b59c163ab3a49b5e7f2b65e40ecdd42eedd365b16e96285ba. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SEUM72400918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb5db861b3645c6a0e3b4e3ce3c6add74045fd02f9caa04ce464cd56d8dd3eea3. 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/SEUM72400920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2639d38002bc50f3b12c39d903d656adb33d5ab6a54b0f8974e60c2c8e5ee411. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/SEUM72400921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6a43bcfcfa2a84ffbb5be2311857957e8574fa0d19cddc7e4a948920700c6b1. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SEUM72400922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf05e3de7e7e1c358ec50691cc4ae21e8c2e05fc1aa76be13774ff0cc65a8eb4. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6I32156338.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cc52976973e4cb881bf29dcb856619f2fb1b8ef5ce4117c4d382fe3258d519. 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/SE6XY2160898.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4cc52976973e4cb881bf29dcb856619f2fb1b8ef5ce4117c4d382fe3258d519. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/SE6XY2160898.