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 0xdc887a0b2c120818326db379144a8783b7b41b739fa32018d3d88e12290f5c16. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/843d0923-84f0-456f-b2a8-499b577bf506.json and https://artists.proofprofile.net/proofs/artist/843d0923-84f0-456f-b2a8-499b577bf506.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 0x97c69dd94324dcae4e2580b9d1386f688f630b96c2c956cdc006de97dbfc3847. Chain 2 (Bitcoin): anchored in block 957891 (2026-07-13T18:21:04Z), 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/ES7380600179.
Sunday Morning Birds - Singin' Hallelujah
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009eeb8140812700a7c7962e04f3d4192cf36b00c936b2a952a945a6f3df7aea. Chain 2 (Bitcoin): anchored in block 958228 (2026-07-16T05:35:02Z), 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/ES7380600181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x009eeb8140812700a7c7962e04f3d4192cf36b00c936b2a952a945a6f3df7aea. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:50:41Z), 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/ES7380600181.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bcf6b781ed355248b66b32b1d4162ed7fe8024dd179982c2e6191aef5f2dd4. 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/ES7380800289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac6cb0b9d209b583aba73738f058a6b3d0e4dbf101a5d50830c2b9daf8d71e8. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T18:22:18Z), 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/ES7380800278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf15ced019315b8260706e41b0fa9d024ad0949ed7ff3a647d412cf137af49dda. 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/ES7380800293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d703bdc2c92d3f2960d431d06f3313f0be19d90c7955652a00bd95ac1f91c6. 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/ES7380800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ac6cb0b9d209b583aba73738f058a6b3d0e4dbf101a5d50830c2b9daf8d71e8. Chain 2 (Bitcoin): anchored in block 959001 (2026-07-21T14:07:50Z), 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/ES7380800278.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81bcf6b781ed355248b66b32b1d4162ed7fe8024dd179982c2e6191aef5f2dd4. Chain 2 (Bitcoin): anchored in block 958377 (2026-07-17T06:48:00Z), 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/ES7380800289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe108ee8af631fcce19a2a48c7604e43f786c50de3a9eda5be8726c7a84c5e59c. 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/ES7380800292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d703bdc2c92d3f2960d431d06f3313f0be19d90c7955652a00bd95ac1f91c6. 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/ES7380800294.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7d341fd934e18f0445e28f7aa47c07c207545d629fa7385727f8a591029e362. Chain 2 (Bitcoin): anchored in block 958600 (2026-07-18T19:24:05Z), 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/ES7381000484.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa655c2a46b7dbb18bbc23462ae26ce5c61863638e78ddf2f0662a97cac52a1af. 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/ES7381000485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891a68d3e6e36f7ba32e6e8410e75111bfbffd3bdef662f2541e305646e00a17. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/ES7381000491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa655c2a46b7dbb18bbc23462ae26ce5c61863638e78ddf2f0662a97cac52a1af. 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/ES7381000485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x891a68d3e6e36f7ba32e6e8410e75111bfbffd3bdef662f2541e305646e00a17. 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/ES7381000491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbba62fd3bce0ccd85e46b90f2da739ca3a9636817eaea9d5e30548d054e74aa5. 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/ES7381300798.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe50474f8bc1a7b3887b3799924b250225225ec5219ae69f72c1647c6bb320cc2. Chain 2 (Bitcoin): anchored in block 958324 (2026-07-16T23:42:25Z), 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/ES7381300800.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17e26f48641b772c7530e1f309f7d4745b9c683b54f4d2f1fa1b36aae03591a3. 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/ES7381300805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d62db0d98e9c5eaa7bb23c6984659187d1a84777ca3ba71bbe1c5bd99c7ad7. 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/ES7381300809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764bc8342ef43978ba87ba8efd73db6a43dfeec0174dfff420f70234a335ac1c. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:58:51Z), 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/ES7381300810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07eb5184c7a18860c83bc57b3ba3189a1294b646b3cc79e76217fd4ebf1fb171. 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/ES7381600072.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888d84b87ddb46e31437eddf207c799c5b09f9a2fef998b52447cfe732494d2f. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:39:28Z), 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/ES7381600076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc353a1250bad1d59b779e5ad96c5dea999bc3c7e4a74455b3a05cdfd98a9eacc. Chain 2 (Bitcoin): anchored in block 958526 (2026-07-18T09:09:53Z), 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/ES7381800018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2aaa906e7456ee92cd0213a4bdc83112d7ffc876d4896f14e98e0afc675860e. 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/ES7381800019.
Man of Many Faces (Music from the Original Motion Picture "4 Latas")
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2801af74aa95b6079b2e399f13fb4f85ecd846a2e398818979bda8cd2ee4d04. 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/ES7381900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae433a0186a29d422dda006e5b4cf12fc26d7f186370260f8e1ee7d42d0b63d. Chain 2 (Bitcoin): anchored in block 958514 (2026-07-18T06:54:37Z), 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/ES7381900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8dae206b77becd0c845093de05f3d01fa51fcd1460bd0710d824298424a7bff8. 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/ES7381900015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa83acacaa2c3be4b0c0994f70b8cb9e3f6140dfbbd6f5763c7e9ad1cb273cd6a. 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/ES7381900020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2e46296021d346b8617d752aaa3175379f8686b73001a22fe51e920aace78fd. Chain 2 (Bitcoin): anchored in block 958935 (2026-07-20T22:08:19Z), 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/ES7381900021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7503ad29f4f639f63dadb6cd21163cd3d5e07d05deb47a7f2a9bb46f11a03a45. 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/ES7381900010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x778673c3fa8ec23f5bc7f4e7d71e5c1a45fe24e2e0d62753f68d7d1593e204fb. Chain 2 (Bitcoin): anchored in block 958376 (2026-07-17T06:41:00Z), 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/ES7381900011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2801af74aa95b6079b2e399f13fb4f85ecd846a2e398818979bda8cd2ee4d04. 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/ES7381900012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ae433a0186a29d422dda006e5b4cf12fc26d7f186370260f8e1ee7d42d0b63d. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/ES7381900013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7443c320bc89764a47eaa177a8b51b32b0115387aaeba0edfc39f47d23b34b9b. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/ES7382300034.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x922e6775d16790b17c906a38c1759ecaa389eefeb56e6977826d18f0c135facc. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/ES7382300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a39acb77b76794b113501e2f9ea974f89972df69c37480d09deb8221b3b6c4. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/FR0ML2101270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aa3ef680fe7b6e6053b55cd2176f6109aa21f336d20e5e351908a8b3b86a92. 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/FR0ML1600270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80a39acb77b76794b113501e2f9ea974f89972df69c37480d09deb8221b3b6c4. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0ML2101270.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdaf7f834e358d26ec4ea3d264af524454b8f7b92c945cb3315bd4ebbcb5cb31f. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/FR0ML2200010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x25aa3ef680fe7b6e6053b55cd2176f6109aa21f336d20e5e351908a8b3b86a92. Chain 2 (Bitcoin): anchored in block 957124 (2026-07-08T03:53:27Z), 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/FR0ML1600270.