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 0xfe5202c3b54c8063e3acdca6bc4b2a50bbceb1ac9ce832085a9caaf1327082f9. 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/db2c98e8-af3d-445c-a674-44307def445a.json and https://artists.proofprofile.net/proofs/artist/db2c98e8-af3d-445c-a674-44307def445a.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 0x166af00903f4064dce3d6974c33c6dcf86d5f13134bdfd3d3fa0a453bb597ef1. Chain 2 (Bitcoin): anchored in block 958905 (2026-07-20T16:14:34Z), 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/QM42K1947887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee65da8f86f161b787937b0df1acd122147970016bab546889345c0bf3ef6d20. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/QZ93L2039596.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1fddc722b1bdc682e489f614e1afc8bb737b9b6e4cf0568d95f527c01269b08. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T16:01:28Z), 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/QZS672197490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c9155d86e33a1b495cffeb3f9cc90a265f96eda3ea557546c1cd880eac28005. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:10:37Z), 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/QZS632171072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a447afbe94874a19d16c8ba5e5cd5368b3ed7f5936b5d6ca018f160ad7dc1d3. 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/QZS642221921.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620d408763db1b88cdac99edb77f4cd0b9c01cc4566b57e347184eb821606a86. 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/QZNWQ2285436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x620d408763db1b88cdac99edb77f4cd0b9c01cc4566b57e347184eb821606a86. 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/QZNWQ2285436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2e0ad23f9af2ead2e4e768294bfdad0ec2be2371e55e00bd67f7b729379976be. 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/QZLBC2303710.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x850811675f23168ebff7ce3a819d0b7a4dfea303cff07eb089bcbb4d265fb184. Chain 2 (Bitcoin): anchored in block 958653 (2026-07-19T03:54:23Z), 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/QZLBC2303272.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe34494b64cdbca88c3a2bd062dabccb1d60cd1a6a12e8721f96370cd7dad65e4. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:51:30Z), 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/QZLBC2309346.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0883b7969cf929f5d52cf81efcf9cb4c1c99a8b088e3270d6606435b7789f15. 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/QZLBC2322159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8983e0be8e78c7f09ade9570a31dea82064116394fc1d0ac3ee7e7a0fb71749b. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:08:25Z), 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/QZLBC2322163.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x83f70a0f4a4aa5ce8a393ce044705dc449314ad957dcd70c8530e2669e7ee357. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZLBC2402874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x800b078d520812d08709f528a7d168866991f908bc21b8580a8c0bbe980f71dd. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:28:10Z), 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/QZLBC2409302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x41a4629246cf3804c29a9be8a6722e64a1a1f5978dc3e8f757a67480a1d6b74f. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T02:46:47Z), 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/QZLBC2409303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d2442c946c30404cadf2263b6f791a1b8cf71d96d94e2aa3e2d101ab807d058. 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/QZLBC2409309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2cadeac5cc06520f58057759e60a31c74330aee33bb6cc52f7aae76c5629167. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZLBC2413658.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cb94cb9098363407ca7ea0140f8e77da9b8e38c6785094658f63710d0721afe. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZLBC2418138.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc16ce9e1e920dcc613c0f9716c21b5317b543d01248372367a100c03b835ef8c. 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/QZLBC2426833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee62bc11be18c612def417b5d4e00fb70b8a033c66cf7a9d41dc0847fd6f17b. Chain 2 (Bitcoin): anchored in block 958867 (2026-07-20T13:30:40Z), 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/QZLBC2503985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x898b7d3b45f734fbb431577fc80eec7c8909630f13fba7b5521913d7ed620715. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZLBC2506070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce4a5af8f857f2f4e8541cc01cf66bf5125d4bb6835358897991072a35a0b87f. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/QZLBC2506071.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8490fbb8330eba8a4c96aac2bdefc4c1fd0812ac428eda722bca58df52da2399. 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/QZWV32599968.