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 0x439afa407925c7e701c383c1c10ccc73dab0cc24f85259866e459154278eff55. 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/e2beaa43-75c9-4446-9449-c1de44e95b02.json and https://artists.proofprofile.net/proofs/artist/e2beaa43-75c9-4446-9449-c1de44e95b02.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 0xc29f982b7e60564874869e99db6ec5525009e97b407e57b631f5914f30253a15. Chain 2 (Bitcoin): anchored in block 958428 (2026-07-17T15:15:14Z), 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/QZFYX1953423.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb19f76f60790ca5a50246d3afd221dc88f5d576206f3bf92fef6059e5c963de0. 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/QZHN61919569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x20f2de4f1280a97e202e6d6ebbf88fc4ebe9f95fcd7e05ca79d1f1a0f9374ff2. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/QZHNA2020876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x481512d36c8bf1bbd3bf2a8e14244915ec6b10bec20d95177e2eac46f4596fab. 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/QZES62079304.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedd31687b2f112d2338d2ff49b8d3bb7cdb733846f94bcb20faf3d277586e50a. 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/QZHNA2020878.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x14a1360969cb38a1fe0c2dd2cc4cdb1104990dd6bb79bc0c3707700b68c3af59. Chain 2 (Bitcoin): anchored in block 958520 (2026-07-18T08:19:09Z), 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/QZHNA2020879.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x120c30eb3c809b5468f36937c288ac1d67703327b6c164962066141afa391cf2. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QZK6K2095430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8b4efa62c818691237d0649f7d753b437dc1aa5248209cfa6447d357dd1e184. 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/QMGR32286893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x962b7864c74edb50c99780da0753c469561f214224f13128b587196434ba351b. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:44:56Z), 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/QZQAY2121185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc5456d790bf409677e93279a3fe54849dfb74ba139181954df0e9f2a9e26d2. Chain 2 (Bitcoin): anchored in block 958864 (2026-07-20T13:01:19Z), 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/QZHNC2209882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95ed5a2f8c909efb0e40ffb6e86e431c160e3b81f2baffcb44263c7e8cd17f42. 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/QZMEQ2169056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x72ad7774b8d26723681384f06d05436aaced14f3ec7cf16d6fae95dbce55b2ad. 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/QZHNC2209885.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77fb7500776d757d613bf8242549e51a4c9dbc20cbdc7d2e757ddd49a8965a16. 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/QZHNC2209887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x38a9dd9164999888607a7c2eea6173dce9f6fbb39a6e8115204951ecd384702f. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-19T23:54:24Z), 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/QZHNC2209890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4ecfa0de19ac603bdf8b44adbc422a14e19b93395ad7b10a863e75fa7f25421. 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/TLREW2233700.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc80a8ee6def11d6b4ce6303c761014161414bcbcd3bba3d5f41a1564f617994a. Chain 2 (Bitcoin): anchored in block 959089 (2026-07-22T02:17:57Z), 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/QZVEM2315458.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb076e150c1fcd08e04db348bd11ea2638971bcf87f324d48222a791f7e92fad2. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/QZVEM2328228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96e313787663b6039d983e8f7e0c4b694ebba7d3bab3958e21cd0329c344de71. Chain 2 (Bitcoin): anchored in block 958224 (2026-07-16T02:28:43Z), 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/QZPEW2403667.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10ba33de54c5a930a49921adee2329a49e2b3c9865e6e62817c160cfd192877a. 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/QZPEW2403669.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb50b50113a0f2379dff70485a8fe694062247514750ca6dfaec1aa6e61fe53a5. 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/QZS7J2433793.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8477796a3f4a2d1594adb638f9d0bfae1deba22d0675cf3c6b7c5b477df86f35. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:54:20Z), 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/QZS7J2464437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cf2535a55c39710203e636f074f14af6053148529a659fd96a29e07a6e1cee. 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/NL8RL2504417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fef1a8b5c31c2740e8d2f65360744b283ababafc31a693153217f80a3f25b75. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NL8RL2504411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6add8ac0bf6fee53ccc93d92bad441fa83fda74ad0a5d1c326605b1e7f836317. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/NL8RL2504412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4d7cec68e8a0803f71f96d6252ea66fecd2755e4c475c7f67050f7fabdec596. Chain 2 (Bitcoin): anchored in block 958115 (2026-07-15T09:53:21Z), 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/NL8RL2504414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8477796a3f4a2d1594adb638f9d0bfae1deba22d0675cf3c6b7c5b477df86f35. Chain 2 (Bitcoin): anchored in block 958504 (2026-07-18T05:41:32Z), 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/QZS7J2464437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237811fc4c1457ab062bac99ffa41b108a8bb85da3da0e8afafb454b8dda4348. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T01:43:28Z), 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/NL8RL2504416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x246e05ec3eda4b60cca9a9fbd2f2b2b94632bcb71b7c8b1246a2253e59437cea. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/NL8RL2504418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x294868afe221c12b64c444b9257c479846436a4e78153faab4d7d40092b7488d. 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/NL8RL2504419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30611a270f57b97909c931ed913d92d91c442156795482cdef1cd631e9b0a187. 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/NL8RL2504420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x091a1b23338438e73b050bc84ebdb5c27264e1a271df001fe96a96ef94dd1db4. 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/NL8RL2504421.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdedbb0a4b44f5d3362dae8fb07037c1e362fb52d00f17e4351843fc7b21a3560. 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/NL8RL2504422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf420ce1d2a0b12626c55e9563b393278363c48b28384e58bf5f9286021c688b2. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/NL8RL2504424.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbe772c50c0b58307f660afa0eea08026b927c35f5a341bdf1c013c6159aa9b3. Chain 2 (Bitcoin): anchored in block 956711 (2026-07-04T22:48:52Z), 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/NL8RL2504425.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fef1a8b5c31c2740e8d2f65360744b283ababafc31a693153217f80a3f25b75. 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/NL8RL2504411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5679d0c8d266bb55d3417479a90b0dabec494843f56427357c5d10505829f7cc. Chain 2 (Bitcoin): anchored in block 958913 (2026-07-20T19:43:27Z), 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/NL8RL2504413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x237811fc4c1457ab062bac99ffa41b108a8bb85da3da0e8afafb454b8dda4348. Chain 2 (Bitcoin): anchored in block 958853 (2026-07-20T11:35:53Z), 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/NL8RL2504416.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1cf2535a55c39710203e636f074f14af6053148529a659fd96a29e07a6e1cee. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NL8RL2504417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf881e4e6fee3f6a6d76bcc1c241a73c158a67b4919109ecd34d3455f587b3828. 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/NL8RL2519173.