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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fe44b6a8b408f06bf2921ef792fc2a63098bddcd6689fe20b8889da4eae44e2. 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/ae1902de-4b93-4167-86eb-e9fad89edbae.json and https://artists.proofprofile.net/proofs/artist/ae1902de-4b93-4167-86eb-e9fad89edbae.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19abbe2281d7e783795f5e0c80e399c27450ae383f5dca97a3d0dbd7b3985f0e. 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/QZ6K41800673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4ac2b4faaca84c9c76a455ed17912ad330631f53589af55033385af32e47585. 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/QZ6K41800675.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe2189b41f97d574e3e441b4e4bbd54f060e0bd5186e3e93f1030c3d7aad1508. 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/QZ6K41800679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f82df2f5f965892e35e7876e2aad55ee8ca12e0da55dac11cd45e0feee324e0. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/QZ6K41800680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15f9aca62da5853c7ab31459315bae0d7fbea1c4d19865f7cc1aa29c73496128. Chain 2 (Bitcoin): anchored in block 958122 (2026-07-15T08:02:29Z), 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/QZ6K41800682.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f615a433c8d79bb65823bec3b11ea2b12319e5a6ee4119d5ebd8dd958e12f02. Chain 2 (Bitcoin): anchored in block 958121 (2026-07-15T08:02:12Z), 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/QZ6K41800683.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7697814f52ecb1b3bd6e16285f361c94d625eacd13dc6a93979eb1fcfc581c64. 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/QZ6K41800684.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6bbb370d5dff840e0f84b0be11a68cfb19c5fdfcf0afa9aae511288b4a7ba96. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T17:14:36Z), 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/QZ6K41800686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f0a30a781ccdb8a424fdfd6c0175ce429f3a51fdfc69f5c162b9f688b14958c. 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/QZ6K41800687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4295049b6bc2bce446017fdd83783f0160986e49c5222942b7c1e0bac9b13d57. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/QZ6K41800688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad36db1fa4d832d6bf32bf5556830e8af4fce0c41de2c73db573902ab8640031. Chain 2 (Bitcoin): anchored in block 958126 (2026-07-15T08:17:14Z), 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/QZ6K41800689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1f600244cdad14ebb725330aa7a7eca7fbad3482d9f772c3dbbe9fc17f7aecff. 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/QZ6K41800692.
Moonlighter (Nintendo Switch™ Announcement Trailer)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8f6dcdf0cec193d5f0525624f7d57d092f05960445282969168a5a22db504139. Chain 2 (Bitcoin): anchored in block 958331 (2026-07-16T21:55:37Z), 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/QZ6K41800694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc72a884e1d69171f0eeccbab15900f4d627301678e6a2fa0ae55a1dc3f9e5a53. 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/UK9AV2101578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaa1f5c3e9002d4511ec95f0b4016a28b60d7fb9f979472514e78510e2d45241. 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/UK9AV2101579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5800e745a6a18a18b00ffdc27d4c92b7fdfde2d41061e38461c5d52e401a3f9. 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/UK9AV2101580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b49ea353efc2a4305d0b663ca892c70ac6e98fe2cc3127e57debf4cc057ea3b. 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/UK9AV2101583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3316a73a5828a9e229d10b48290bd1d7df60c9517495efe51b077cbd478bd0c8. 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/UK9AV2101584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe84647ff6d693de3bfa831c592618f87b496c367be008cab364776a50273e541. 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/UK9AV2101585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7ccd7cd17528904c294fd68d0643695a4fa03349504544fbbab07d20ca92d7. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/UK9AV2101587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdc6880f3bfc8f64293e81b562972fb737f3f11bbd1a8273feefc03f93525b5a2. 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/UK9AV2101589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x742b8902579bfb27bc444d8ad1b38f439eb950ef7c9822a1956fa43668fe5dc9. 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/UK9AV2101592.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x738da85e9d52afb2457905fde177b021332d50fc4658c6e3e31ea56540b3c6d8. 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/UK9AV2101534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2efa377a0c0f6b23c5a38448347d64ab5352e8440f2b29af6cfa422674697877. 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/UK9AV2101537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91d51543a6a8d6dd0051c3e6cd607299638af381a110b66c0b39161af8b2f14f. 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/UK9AV2101547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2d5e18318a0d61c9d6a602f2bab49aa7d481eec1d3f3c792c50c68ca8e871dd. 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/UK9AV2101553.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b897a25655d0a7999f62847ae2adfebf4757a8da7665ed1b4813a59bd03384e. 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/UK9AV2101555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0f87827858fa930158e324fbbad89350d8aef6bcc4b33e1450341439a801e9c. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/UK9AV2101556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51156cccecc169804cd0b1c36a0ca5697c32e3a2a92261b25edd81454d790ad3. 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/UK9AV2101559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ed50294061c698b2874b6d8782093e968db7fad0e4331f0e7b5aca4d67100b2. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/UK9AV2101568.