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 0x984dd5ca22ef963960acbd6e96bf58eb570a63fa4d93a552d9b5fe1423d7a361. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/1fe4b94d-ec97-4ccc-9155-dccfba521722.json and https://artists.proofprofile.net/proofs/artist/1fe4b94d-ec97-4ccc-9155-dccfba521722.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 0x85e03f37f228f4d4a23a1b45b1b4ef67f7db5837ae133b8d9828936c9dc1165d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T16:13:20Z), 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/QZ2J21503996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87115c294907bcb9e20954b4750c63144a2bda0092c23b9848e2355d5c19f008. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/QZ2J21504023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a66ebe6daac9b715b4d89902e460c1c8acf3ecef611ab57ce8006b0d546a629. 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/QZ2J21504027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bdf83ff1b4f90d6689f9e43db90688ffe041678375c23eb99c21810e63f872f. 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/QZ2J21504030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf90436935f5e74b916df074a05bd08b3e7cd596c4b250032413c35b2a4a7aa0f. Chain 2 (Bitcoin): anchored in block 958705 (2026-07-19T08:43:25Z), 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/QZ2J21504031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3bb2b854c8d29eb2cae26d33a96666ca7116330169432428c4c20b24ca3e1e6. 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/QZ2J21504056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb52834e1dee2a07e8eadc9805849af76ad4e5d5b1a9223549eaafb36c881b734. 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/QZ2J21504003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfc220c1996e117d064cbd6b6a73a1d10626861f177b7ddbd01e90d294bbbbb56. Chain 2 (Bitcoin): anchored in block 958341 (2026-07-17T02:27:04Z), 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/QZ2J21504006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1915f65ee9e51ccd7a3f7f70d77466422ca85bdf858648e51803c2a7adf7717. 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/QZ2J21504010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf07171d67264c7e4a592842736b86702e8782e5d832725c5e4d16aa6b8b0283. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T16:03:51Z), 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/QZ2J21503971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2c67b4390086951a322032ac67e434ca8ced89acc1c8d2a78a8bfbf26a0c04. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T21:20:45Z), 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/QZ2J21503972.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f9179ebdfff40c7d300633be3436af4c9a7db1ddd85321d447075ec8b40c9d7. 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/QZ2J21503978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5015f82109bb1ba64772aa186367ce0cadff19e1d12eba171cdda907843c2a37. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/QZ2J21503979.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2b8d5b65741b8cec061aea2b3343f519a657c4f8af159a3fc5eb718929f9c2a. 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/QZ2J21503980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb14f4cc0e3c552eea015dcc97bfbc8b8868f368c3ca6b8ad7a0ae1a9674b6a38. Chain 2 (Bitcoin): anchored in block 958552 (2026-07-18T13:15:29Z), 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/QZ2J21503983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9aae51b2d414faffdb8c11418cd128263390aa3af6b7040892cb3cfa9d20b729. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZ2J21504043.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92b98ae94e210033ed8d833e74daad7f2c8da368f0cb20c75611b91dc7922bd6. 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/QZ2J21504045.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e5292b2b1f3f3850d5baa7db91e73e3ed9f4b752e84e1aed10364125e389b46. 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/QZ2J21504048.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e13f5fe646feef9a30bf2738a89595422f8f09d425ecc5c9b98f07497dcb13b. 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/QZ2J21504018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4b322b98ae102d7e6a5cd0ad60c07bd0f57a9cb691ed9ac47f52b54d547d7377. 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/QZ2J21503965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2df675b585b3ddc16d374bf7a3a4b704023e66e72c1a934cd9c2ea237360b4. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/QZ2J21503966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7b859875650e01f4182731f7d90b79a241645ce5f3f754841dcbfaf2f41855. 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/QZ2J21503967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e5a8ae8f1f1022bd00f51576f47bc00e6acf55defc2896137bc41f057471c74. 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/QZ2J21503968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ae341c567274e06353b4fa128d4823ade79adc6e3fd65cbb7732ea173af47e. Chain 2 (Bitcoin): anchored in block 956404 (2026-07-17T03:41:55Z), 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/QZ2J21503969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60c33d7001c3fc3068c58f027d356ec20e0a387b4a29547443ac72ae378b082c. 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/QZ2J21503970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3683357871c31cd225f27f864180909ef2649eca4bafffd7cfede02d4caafe42. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/USJTQ0905537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba66d8743dcb4ab5d6649096b9c1099e51fa60c7c94b26112719c0b71c97b7b4. 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/USJTQ0905539.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x575ae21fec952f31df71d23c2eb3a14c88430d259fea348f2b7d8a4aea5f4803. 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/USJTQ0905542.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf00a730b581b8f232b4e6276ef4fe72d76899922035c20d2178b3efeeb22e27a. 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/USJTQ0905543.