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 0x8d44473bec5a879560baa1362a25f25eff909adf502c449bd0cc99f6233b2309. 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/c9e4c9ac-ccad-413f-a6e4-30220ba65562.json and https://artists.proofprofile.net/proofs/artist/c9e4c9ac-ccad-413f-a6e4-30220ba65562.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 0x51c4b7ff57c3d421683fa9ddd1c3e4a8b1a01e45b3a800dd9542e435496fe567. 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/SMRUS0060953.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a38e16d4cbf2160b231c7332b98f906dceac117ba77ba3e7523ee7571bd3352. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/SMRUS0060954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c3a4a070d607c2453f89bb36d9235018d27d419f3c8ae30df53212390c2a1f0. 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/SMRUS0060955.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b7930e6c8e7f03e3321be06dc410a1cd215921763769e58e150048adb0c0348. 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/SMRUS0060956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06b736741edd2603337ab464129e61156a89e095ea123edee90dd09b4fc8d729. 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/SMRUS0060957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd10ae2e650b3f63044153df667deff1ebd6e06c905fb40d20050836197acbfdf. 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/SMRUS0060921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0194132d9142b0dcb6996100a542f50ad6e8695bd51643f170a5141414d9cc5. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/SMRUS0060923.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aab612202bf5bfb290073e244a77a75634d8b63feb9e4bf8639cbfaa915518c. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/SMRUS0060924.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc135a6af88402923d1e04215c7cf575b8e52198331f99fe31f1434ced1f604. 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/SMRUS0060926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17a5eaf84e73fc8553af98a66c54bf11671ae302f2c6cc596b48e30e2f7137b2. Chain 2 (Bitcoin): anchored in block 959051 (2026-07-21T22:47:14Z), 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/SMRUS0060927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c0d3a00a646452f9c7d05dcc4ad62c69bc760fce9af357c37425d13c30079b0. 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/SMRUS0060930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa65b032fd9693331acbe987c484c1504ae162f74b6c77a0b858f4531e50e4e66. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T06:52:45Z), 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/SMRUS0060936.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x27d5f5be89d456232ba2170ff2316015ca72b0689f62bb01dc0550292dfc1c83. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T20:00:53Z), 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/SMRUS0060937.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe526ee9cb8502a7a4e1c764792fa62032e34d03f46321c4b218c0206c0e701fd. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/SMRUS0069867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac97e296de13d29af5434ae176acf09c9a7f299e186013ef73bdb684334f770. 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/SMRUS0071929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f3ac6b086e6c54ed823f7e0a61528fb20e23d190646fa1289531eb1f09118c4. Chain 2 (Bitcoin): anchored in block 958870 (2026-07-20T11:19:23Z), 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/SMRUS0074211.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaab0088f55465273ed5d32808c0dfd1fe69e9da61f93df2ec73a6dadbb91234d. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:10Z), 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/RUA1D2352111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8634c720e40a7637339c3daa89ea8afafd9fe95e4dd0a46435b1f2f65d2bbcc4. 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/SMRUS0076474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1b58098d206b33405f7295996ac10d468f634c6294594abd135a9096c04f3c5. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/SMRUS0076941.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8fbde8fa2503b77b8e6fba432e591b8af2f4cb15bd65e39f5eb1e431666eb3e. 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/SMRUS0077176.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cca518e519082a394a43e38d0f7edf3385c5fc09ac08e0cf2e8891c3b12c301. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:09:16Z), 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/RUA1D2458960.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b00dcef4e0d5741e325a0350dfcb3bcc8925eb843cd740a1b3d7b3afeac04d9. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/RUA1D2463208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a115ada6f3af73a8429a918d77c995270d7d00bb32e65ffc48a4beb93fd40e7. 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/RUAGT2489626.