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 0x6ce0ba01abea6cb74b162db689ea02976494b5b796a529c8c3a9e039446185cb. 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/19ddba4f-8c1e-4a6f-b2c4-902da79ce273.json and https://artists.proofprofile.net/proofs/artist/19ddba4f-8c1e-4a6f-b2c4-902da79ce273.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 0xd2b51570f726842bf22f241cd05471de39d27c11338f2cb723b5ca3146b4f7b1. 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/TR7801200152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40839e8944d9d032988347a597b80b9da0bec109eccd5037d3b010fcbfcc3d51. 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/TR7801200154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1b6d46cd5fded3db03ea59242fca6ce5394b823c5d0c0c74c01a6c913342683. 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/TR7801200157.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c21522d572a172118ab7c44caceca61664063d131f67632006d670f9b40b6eb. Chain 2 (Bitcoin): anchored in block 957834 (2026-07-13T09:42:16Z), 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/TR7801200158.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78962ab8aa64197f1a260b875a6a1125703b8ec27a6428da4b654176ee454b3. 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/TR7801200160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x595de7132b3735ad961c348308da4c171273fcd8afb4ef60c701df10f2b7b5cf. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:47:18Z), 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/TR0061300506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac1908b7d45d39f5fad52c627632720e0cc95f9b75dfdee4402c89c509c417db. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TR0061300510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd51a63c41f8cebc2375c613add74fa498b06a91938c479d27ddb2942f4c91049. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/TR0061300511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6d6b7e2949992b77b412b4760e5d88e9a483bee6e09c4b225c0c74768fbf2ee. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/TR0061300512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x406944b742f3ddb0d805ad62e2df3d892773d03911157ae864b284b21e985295. 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/TR0061300513.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2fdacc10620c1411193f54c23c248d01247558be76a6045499470d1e86e4449. Chain 2 (Bitcoin): anchored in block 958388 (2026-07-17T09:14:21Z), 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/TR0061300514.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ba1514ac7ec907cfa3aea1209f7f2b6c6d900cae1e2ba7ca2f92c8986a59f5d. 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/QM6P41894881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9d4444f69a79779d3bcabb08f5d9ea5a38b6b1dd18f6014970d79943852259a. 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/QM6P41894882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1e0b2865b872347b528e121a859e9d0c278b77304ed54c6ad7aa926a8077e5a. 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/QM6P41894883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe653a004a40229e18d1ecadf9bd679f42c6ec5970bcf78a669116a9d9f201b52. Chain 2 (Bitcoin): anchored in block 958203 (2026-07-16T00:05:34Z), 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/QM6P41894997.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ccf56c272a4de1187e93d0fe3f1b1bcb175aac16d440b3e5fce750c26a092cf. 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/QM6P41894884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5e39acef3d8a022067b5b2fdf41c5d24082285a841c807c67f067070abc0919. 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/QM4TW1972511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62374edd9b79cc364fc38567ff359e53bc44c7ead7772891da572d5364573bf6. 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/QM4TW2090031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x870c058596791cbdd6a9de8caf2ba54fc423537df6536ff4becb99bc95718725. 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/QM4TW2057877.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb08e3d3c3c7b0419128e7b60eb41787caca01009f5dee773fdb466c7d92206. Chain 2 (Bitcoin): anchored in block 958054 (2026-07-14T19:33:24Z), 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/QMFME2011828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd80eb76d524b24ffc4aa718803c8e863a2fcbbd65450485906601eaac9a5757. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:03:12Z), 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/QM4TW2178363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc552651a6aad8e6f73ecb418980a51f66eed58a7f38669969119a10b29ee2e6. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QM4TW2178366.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x458cb8e2853b647d57c59bdbca704bcf6656e375a86637563b4a540a417aa4bc. 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/QM4TW2178367.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc381a574e8f1503c4eb723849ff44f251321836e54e9de2aaa7e985c2e1bedab. Chain 2 (Bitcoin): anchored in block 958303 (2026-07-16T16:39:24Z), 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/QM4TW2178369.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b7ba8c10e2c679de6616be1e1c9e53fab56e962c894454ec1b122130f4982c. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/QM4TW2259747.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f47ab7a00c0e7d57821120c918f4ad7d1b1f12efc250a0cf0c009f4fa9ff489. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/QM4TW2259749.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9a1a621f057d8e4c46108b0c9cee2a61028d264ee03b182b1cfb1feea3455425. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T10:46:53Z), 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/QM4TW2259750.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2930c5e2206a2a650b564970ab8c81b50eef6f987bd9d161b51c2500447fa4e7. Chain 2 (Bitcoin): anchored in block 957546 (2026-07-11T09:35:53Z), 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/QM4TW2259751.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x021e717bef1d9186993d1a17b05d2826899ab15c3d1fe03aebaeae666e836c5f. Chain 2 (Bitcoin): anchored in block 957899 (2026-07-13T19:36:39Z), 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/QM4TW2259753.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9c9c0527c2a69af8429b377c9affef441e50b4e82c6c65a75d1174d3619eb5b. 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/QM4TW2259754.