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 0x1f8c0926ad36c630b57b25620d58ede77ca9a60a00807d8f2f886549cacb753e. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/27877b96-d5d4-47c8-9216-912e413a5299.json and https://artists.proofprofile.net/proofs/artist/27877b96-d5d4-47c8-9216-912e413a5299.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 0xbc339a5c59ce7ba08fc57572dc837a1959e97edafad3293592dd7370fda0a624. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/TCAHR2345257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1eedf82122fcef5a308a62adf1cac79a1c73ae42a8a7e7931f5a51939c27982. 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/TCAHU2426440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12dca885fd52f905fdd6e6e7ff3a998ed61dd5e8ab4fae1c28422437bb9308ec. 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/TCAHW2433968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5c667a419a888489d5698697f9112485bbcc4690e2f6d1428fa83255c00da1ef. 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/TCAHX2413149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f6a07e53a17094fb8255d6aa308625357a85ed50e9c8f3e08c4f59a8fb2312d. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/TCAIA2464469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd3b9249bc3bed60a945534eaac606c1b521c5527ba5fcef8c3417aabd5f665b. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/TCAIX2491694.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7e2e0a47d84f8e9b7e34f3755cca069c883ec813e1643c438b3581c0b5cead6d. 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/TCAIX2491651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa94f3315d2c3438e8b4739d349d63315356dc7753f6bc2b24200d5cf0a4746b0. 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/DGA0R2409792.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa9a52e2b4704ca236accc7f9578fc59e15d520f7338c39eea3bb854bbe0d3160. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/TCAIZ2424656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5e648002cc8bb664fae6f421843ecb26295c1f184835fb0261cbb573d845727. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/TCAIZ2424620.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa87aab67d509c50707302f4c8171c58cd649da7e05e4db3ba2f9d3edfa061f3b. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T04:29:18Z), 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/TCAIZ2479884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972504fada7fe0ba617a5b8e697b23ef40ebfe4fd2ea0a769755e0f37f223906. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-15T23:25:50Z), 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/TCAJB2476406.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5456e1f5c8983fa571635a037f77aea2c7574a0d42cc19e71f5f7e5720c6d3. 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/TCAJF2522052.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f78ee9c567dd26bf20a114aa73574f4b1dcd7f05d7296b2140a13d44929906d. 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/TCAJF2594805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87d134c4703c2ff07980cc0b777a7bfc8c5923db47d6a1726ab6efd6123a1ba8. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:47:52Z), 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/FR2X42585224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee93f0025d41f02b40f3929ef2db262fdf4967633d3bebba6ced89bc3de5b295. 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/FRX202553700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2e28ed9173a6da4d02a62db0975129fb270ef7bc8f7ddb29ea6289e44bc53bb. Chain 2 (Bitcoin): anchored in block 958340 (2026-07-17T02:38:43Z), 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/FRX762580728.