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 0x53901dc2c9393e7793f492850e5b4281b03147dba662bb3879d6f618a8e86a76. 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/25bb8990-7fb7-46ae-ab25-69c01153ca75.json and https://artists.proofprofile.net/proofs/artist/25bb8990-7fb7-46ae-ab25-69c01153ca75.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 0x01ec6a562ed54a039b307c89ed5c0c4a55a2182f3fd36f6c3aeb050518993512. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAIM2442976.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd85dde77df96ba28f7969c00f9d656d9a8cde6c2a77e9fac6a7151331ec2cbdd. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T17:59:52Z), 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/TCAIM2443001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b78be0d3606c7e3b3dac95c41b530bce1164b3a219e02081b93bf9f0dabc6fd. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T05:50:22Z), 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/TCAIM2442982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9898242070a0d9d13c9533dcec19a5fe4dbd3ebc6189dfb93d2d75f6d8b78b5b. 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/TCAIM2442988.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5fd0494d71f1c750086e24903d5a4f3c76ce466d93dc892f4f369127ec41e3b9. 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/TCAIM2442994.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdba00c27b44d33afbc31c4f91f4775d7a7f8c3c272b97e8e4e4cd22b98f760a7. 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/TCAIN2442996.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09ec995363c34a0461dc25f22cac957a9dbef0dacd3fb414cff24db88c167ad6. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:31:11Z), 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/TCAIM2442998.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a44fe77a2cd5b18c43dcf9ba1568a222b683d73f9953d6b2c142a1fb638666e. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/TCAIN2443014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e136ecf1778c86939a996e1109c88a240024095eb4df4e1996f41b06fcc72d9. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCAIP2434989.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4191d77f1291042f7a12aea0e5e09be92360b2fa72df3213a074fef0a722244. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/TCAIO2434978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07b948adebb524778ec204fd82e46b03c547446e33b8335b74bc28ddca7b2b0d. 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/TCAIO2435031.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5419bb1a0669bf3303c37b8ccce13d4d1e85183f6e7d9b766d768746c687ea9e. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/TCAIP2435016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0699157bdb003621846417d62370813a2e0bfddc0b3dfcca57e92315009cdd2d. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T13:18:05Z), 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/TCAIP2434995.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f283d614a73d53cff6cae1ba52307b345f68d8c9b7a4349d0dda6cf1f2fd5e2. 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/TCAIO2435023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6d0c86994b309f7ce0efd02224f2c217668ff702650df6b0040239b8c1f7a3ee. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCAIO2434944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa114d268454f09abdf81f072aefa928d702ef84c81b0438ee6dc81069c6c95b9. 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/TCAJL2544555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a0893f3d8d5e0ffa1046ec4c4d333abd34505c7410d9f38e8e868b034514495. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/TCAJL2544570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378ae6a344c33936f9190914dd3268935d6b7034ed10d15e5232257df76c3292. Chain 2 (Bitcoin): anchored in block 956745 (2026-07-05T05:33:35Z), 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/TCAJL2544571.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x305863f85de176b590bebeb61f1c3f4b2b0ad525d22713f146f2e43f0701d506. Chain 2 (Bitcoin): anchored in block 958568 (2026-07-18T15:23:47Z), 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/TCAJL2544574.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ad28e056d7c0ec7cf39661ad99b3c636a434cbb8fdac2e2654c06a33a39b73c. Chain 2 (Bitcoin): anchored in block 958823 (2026-07-20T05:23:25Z), 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/TCAJL2544578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89265809f4d90dbcb3e3419b5f142cb3e039ecc8296ed80e0f42eaa0d221e843. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T18:01:47Z), 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/TCAJL2544580.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a55272ef4faf236e50e7322e7526bfa840146ff3b9429a9f989a24e6b137a69. Chain 2 (Bitcoin): anchored in block 958783 (2026-07-19T23:58:39Z), 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/TCAJL2544591.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2060fa4fcfdd344004441fc5cfc196d97cbac36330f3d6c391d854172e5dc423. 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/TCAJL2544599.