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 0x96d34244135a71aad3e26224f6dde168ea79d197c38bb57fe195119cfedaf997. 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/52256e82-e69a-4427-b4a5-d66e0ed86eae.json and https://artists.proofprofile.net/proofs/artist/52256e82-e69a-4427-b4a5-d66e0ed86eae.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 0xd1bc83c80206adb2aa1a293c04ec7bd688f43d1e03c6865157f931853c50be58. Chain 2 (Bitcoin): anchored in block 956656 (2026-07-04T14:03:39Z), 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/JPZ922304784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90850eacdf42a2be6a9d0b96427a78727832fba91d840f77e6b40ca9b7e53b5e. Chain 2 (Bitcoin): anchored in block 958384 (2026-07-17T08:27:02Z), 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/JPZ922304785.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a2e9a755ef61502a3a3d042fe87c9b06ef297e46a4451b03799ed67039c58e6. 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/JPZ922304786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd985e8c10a2fef2143e1f66201eaec70cee3365129daeb26863af26c4c04a55e. 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/JPZ922304787.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1bc83c80206adb2aa1a293c04ec7bd688f43d1e03c6865157f931853c50be58. 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/JPZ922304784.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75190a98874e4ea837cd605133ce39cf5527dd45a45ba13c79cd9c9c5d2c826. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T12:00:27Z), 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/JPZ922310980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2c5693197b2b2081b2e0163e18ad1fd3722c50a59d6560912b83dbf9905f29. 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/JPZ922310981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19016408e8d4d797cdde529ca61d961065226b27b2117f102a232462e4c6851. 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/JPZ922310982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306f7ce548132595facf601ffa84484ecb19398cd086b8a3cad7db4069b71832. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T08:54:34Z), 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/JPZ922310983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fcec0bf8a28453df70035f9fcba6ee923d869328ab5282204982c3ddbe1605. 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/JPZ922310984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf75190a98874e4ea837cd605133ce39cf5527dd45a45ba13c79cd9c9c5d2c826. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:33:18Z), 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/JPZ922310980.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xef2c5693197b2b2081b2e0163e18ad1fd3722c50a59d6560912b83dbf9905f29. 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/JPZ922310981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc19016408e8d4d797cdde529ca61d961065226b27b2117f102a232462e4c6851. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/JPZ922310982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x306f7ce548132595facf601ffa84484ecb19398cd086b8a3cad7db4069b71832. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:33Z), 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/JPZ922310983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5fcec0bf8a28453df70035f9fcba6ee923d869328ab5282204982c3ddbe1605. 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/JPZ922310984.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c435151209fb2f7e75e2294c8bb1eb58454a75a0735e97cc078293247711589. 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/TCJPC2499827.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff1629e7eeab03d447a5a7948d38b89b9ae726434901ec911fa48931abbd4e5. 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/TCJPC2499830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaa6aacf415343769c6daf30f16c940684a5782c6538f6c6b4b0b8bea60ad74. 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/TCJPC2499834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8e8ac40e3ff94757acd7c5710eb0a66651f7ec182e2415c6d7614fd48de4db. 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/TCJPC2499836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972b5a38df7d0d1e083f34e1dba9240c0804f9c316f4377d6bf848ff9071799e. 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/TCJPC2499840.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff1629e7eeab03d447a5a7948d38b89b9ae726434901ec911fa48931abbd4e5. 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/TCJPC2499830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5aaa6aacf415343769c6daf30f16c940684a5782c6538f6c6b4b0b8bea60ad74. 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/TCJPC2499834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a8e8ac40e3ff94757acd7c5710eb0a66651f7ec182e2415c6d7614fd48de4db. 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/TCJPC2499836.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972b5a38df7d0d1e083f34e1dba9240c0804f9c316f4377d6bf848ff9071799e. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/TCJPC2499840.