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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a72d0f5639fe689769499c9ee8b457b86a4894bbedd69bfa539df9c7aa9b360. Chain 2 (Bitcoin): anchored in block 953778 (2026-06-15T11:57:35Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/d238e4fc-3b38-4379-af1b-2403533b66a0.json and https://artists.proofprofile.net/proofs/artist/d238e4fc-3b38-4379-af1b-2403533b66a0.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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23efb0dc4ed3404885f4bc8c7ea8d5425c3e141232fe60cefa9d09c69acd0f12. Chain 2 (Bitcoin): anchored in block 959152 (2026-07-22T16:23:52Z), 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/GBUM72201284.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb40b05196254b1040870eae4a188f21bb8514e70190169468b5b8bde7c5762fe. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/GBUM72207582.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45e17b23591b682ac7cbb417bb606e82adfdfaa1791e7ca3120ef357260d0e3. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/GBUM72207583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x65c136cdd7f35eb24ada8ad9d7450e0f459be817d4427ddaedf0daf651a05b70. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBUM72200492.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1de2cf78cfebb0db3b79c61ac47736ad16876eb8fb8cf7aee0ed734c755558f5. Chain 2 (Bitcoin): anchored in block 960327 (2026-07-31T00:26:26Z), 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/GBUM72207584.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72977da4e93159849ae8c8d65214ec0d1024744e03dc8462ebb60b979da6dc25. Chain 2 (Bitcoin): anchored in block 960407 (2026-07-31T13:26:30Z), 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/GBUM72207585.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc22fe0439b72c78b2e429a69bb47880f487f8a2d86b43662d17d51657004ed54. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/GBUM72300535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa73729440c597e59d8d0c602f161b1cddfb56c5486fe7d204d44baca45ea304f. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM72207586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96b8039a28f7dccad21c70446a422ff9b1005fe31a0816796b240eedf4ba89eb. Chain 2 (Bitcoin): anchored in block 960337 (2026-07-31T02:51:48Z), 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/GBUM72207587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbbd57edabea46f75019cb0540ea0f3bcda211159a463e1873ae449a0f1c9ea96. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM72207589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21fdb4c7a8c96f64e98d18476199ca64071ed3250dead6dc01f4ab77c73896a0. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM72207590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4bd601faa557b751590e51ecff7961c65e7366d66d4e30cd2fdcbd656d6f8d24. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/GBUM72207679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf5346247779abe3f9ae78c5cb42df543ddf53d0837be2b5205bbb548d3df49. Chain 2 (Bitcoin): anchored in block 960340 (2026-07-31T03:15:04Z), 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/GBUM72200489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f28995bff6cee338a1b701541c5e48edc760f0663444252fbbedf9eaa19a2d. Chain 2 (Bitcoin): anchored in block 957046 (2026-07-07T14:04:01Z), 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/GBUM72107944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x906972c95e1fde81b99382d81e9a5a71a9d05313baaa9bf8e347c162ba6bba2d. Chain 2 (Bitcoin): anchored in block 960300 (2026-07-30T19:42:40Z), 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/GBUM72107962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa483dfb44ff0c0a918171655e29e9bad86f8aef0919891cbb8e9f628c72be398. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/GBUM72107945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7024bc9d4630d3d62c18c903424de0198ff962f9a1afe31e4c2c9e28cde852d1. Chain 2 (Bitcoin): anchored in block 960302 (2026-07-30T20:09:33Z), 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/GBUM72107963.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b261e81775fb670180050f1f72efc86854af39df8ab9854e97fda575e9075b. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM72107948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa421d00c27e05981a8a482a8be8223c238e1c39510a5cfda562ca553a570b405. Chain 2 (Bitcoin): anchored in block 960379 (2026-07-31T09:25:34Z), 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/GBUM72107964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf42da890d8d1cc0db7ef9be5db75c8fced9a3a80a41f6edc6c34ab086068999. Chain 2 (Bitcoin): anchored in block 960497 (2026-08-01T02:22:04Z), 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/GBUM72107965.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40bc5334bcb15cdf1b99e4ac119c8a5efde19994f53a5ae5bed8df028556f73. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM72107952.
Don’t (You Mess With Me) - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7736126ed4d0d163923867326703f65630857d838289b595067c7e82478c463. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM72107966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9e86b1d195f2f888e44efe44a754043ed1642175d034ec816a4c493bd2ffaf. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/GBUM72107954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a9b513eeb516587668118379f8dd91fefcf8560df083dbed3be18584b510b7. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUM72107967.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8874925911d693a7d6be66d508c69f2eb2834b68c62c8ed8303c716e7bb04. Chain 2 (Bitcoin): anchored in block 960360 (2026-07-31T06:42:11Z), 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/GBUM72107956.
The Wolves Are Returning - Instrumental Version
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bc991b2d99b40281461721971a2f3d3393d637c4d53f57ac5ac47b4ac8de3ee. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUM72107968.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1715ddba9143e53787c814102a5f0e1387b913c9ae3e8fbac5067a67c161a63d. Chain 2 (Bitcoin): anchored in block 957118 (2026-07-08T03:20:19Z), 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/GBUM72107957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9da43b5c2571f9e66dee59e13a07ba01a1c2804eef39aec4717ddb631e8576b1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/GBUM72107970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf5346247779abe3f9ae78c5cb42df543ddf53d0837be2b5205bbb548d3df49. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBUM72200489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee4b4ec86acb1c6bff80a0f6648358ab7fbf8b6d5ea73c550dddda08fec90cad. Chain 2 (Bitcoin): anchored in block 960216 (2026-07-30T06:39:12Z), 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/GBUM72200490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce1ffc745f32b79e405e7752206fb79d35cbdf522f394605409240ba11931141. Chain 2 (Bitcoin): anchored in block 960348 (2026-07-31T05:17:02Z), 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/GBUM72200491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9f28995bff6cee338a1b701541c5e48edc760f0663444252fbbedf9eaa19a2d. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUM72107944.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa483dfb44ff0c0a918171655e29e9bad86f8aef0919891cbb8e9f628c72be398. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/GBUM72107945.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3b261e81775fb670180050f1f72efc86854af39df8ab9854e97fda575e9075b. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUM72107948.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d6ef5e3a285d23434e495b471f5784b9a403083044ee8d458aed9436a54f24. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUM72107951.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc40bc5334bcb15cdf1b99e4ac119c8a5efde19994f53a5ae5bed8df028556f73. Chain 2 (Bitcoin): anchored in block 956304 (2026-07-02T03:55:08Z), 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/GBUM72107952.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b9e86b1d195f2f888e44efe44a754043ed1642175d034ec816a4c493bd2ffaf. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/GBUM72107954.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79c8874925911d693a7d6be66d508c69f2eb2834b68c62c8ed8303c716e7bb04. Chain 2 (Bitcoin): anchored in block 960106 (2026-07-29T12:41:21Z), 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/GBUM72107956.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1715ddba9143e53787c814102a5f0e1387b913c9ae3e8fbac5067a67c161a63d. Chain 2 (Bitcoin): anchored in block 957055 (2026-07-07T15:12:44Z), 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/GBUM72107957.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23efb0dc4ed3404885f4bc8c7ea8d5425c3e141232fe60cefa9d09c69acd0f12. Chain 2 (Bitcoin): anchored in block 960441 (2026-07-31T17:29:52Z), 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/GBUM72201284.