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 0x2d5212715d3562fce0940ca0a15533d02840de00fad39a032178752f7d2b4e9c. 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/ac2e42cb-8177-417a-b195-9dcd2204026c.json and https://artists.proofprofile.net/proofs/artist/ac2e42cb-8177-417a-b195-9dcd2204026c.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 0x6c3cd9286a7d9427f132ad0deb071c26cfa84ae4bbfcf04007beb9d299110444. 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/TCADK1745159.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30c7ecc10056e068a919ab9f3edd6c60317efc9abe0b037160959e0e36ab398f. 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/ITB551915603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2fca7395b7dbba4c65158b6c8c301392d46ca300e857630ae11c34ee8f3c2d8. Chain 2 (Bitcoin): anchored in block 959009 (2026-07-21T14:59:54Z), 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/ITB551915610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae41a2df581186e09dce9d3574699fac46d598a3cbe7eded641697133554d8ce. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/TCAEL1980383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde0f67c34f159a0650cfba229b774903189062abaa90be61314e2b8ecd6b5b66. 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/ITB552016248.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3050fdbb89425aca82d48d3d23c3b9f17e495acc8ec55c8294e8a868da217eb. Chain 2 (Bitcoin): anchored in block 953528 (2026-06-13T15:41:10Z), 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/TCAFJ2177220.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ca72d775c66995fcea898ec1b5f668ccc0f8cf13b6921d919449fbb12d95970. Chain 2 (Bitcoin): anchored in block 958802 (2026-07-20T01:04:02Z), 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/TCAFL2196189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc620b87c0181b20704bd6e46528bc6c8b13aea6c5ef5e823a00ad87f547b42ad. Chain 2 (Bitcoin): anchored in block 956440 (2026-07-03T04:03:57Z), 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/ITB552116507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc6cc043c539ceb23c98553fc6d8564d9a9d342e75fa7abe6e939f29850b0a39e. 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/ITB552116546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4f77fe14c00745628a22aef2e56ab3d4da23eabb15ec783a785a58a152bf16f. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:38:42Z), 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/ITB552216572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba2809dbcf234767490c31d00c63533cb8ce025c5a749ea5d00ac92ec1d03c7b. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T19:50:27Z), 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/ITB552216573.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2489ad01fbd339b283b82b237eda519297667b90e4ad033bc2e6c90bf436936c. 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/ITB552216577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6634b4bbd4bd9b77301c5425852b5249e714adad21da0c624ff75808cb692602. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-20T00:06:06Z), 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/ITB552216578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa175b0c3a5640b93aa1dfc985e90b5f83db748b88492a187fd571e1a9bf6e26f. 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/ITB552216581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b1d6b6af22f7f869ef1bcc2693cddbc72d4bdbb29c34f4e7a96b55357503afa. 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/ITB552216583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x342d0511edf7f3b83dfd70eb3a1471a47d1bd36fdeb176536bd796db765e3835. 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/ITB552216587.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd678a2e501e1186e8518893ca9e88f47b3f0d9eefe0a53ada49551372ace7e70. 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/ITB552317038.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb56da55c29f007c9198f96b80be8b91e438b48cfe619b48fcb87e38e5e1631. 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/ITB552317142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb936d648ab9c840436ac9af691c67beccbb743a8050e6fbf32fc34bc1aad9579. 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/ITB552417178.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37c90d1c481beb0eb94e612cd99b8afdb5b4f791fc1d7b6fee1269532a72f9e1. Chain 2 (Bitcoin): anchored in block 958650 (2026-07-19T03:36:41Z), 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/ITB552417182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94078e20529027a736cd49e08dc5b01f85913ab51725f6b13527965d40e9c7ae. 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/ITB552417285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f9af2359930eb2ba57cd540ff3f062726b5ea8d7b6e3f1a1a7c2ba7452bdee1. Chain 2 (Bitcoin): anchored in block 958736 (2026-07-19T15:41:59Z), 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/ITB552417332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62f542134a472e4a9f37a73686bd2951ccac90b25f5ed19f021eba2f54165ed3. 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/ITB552417386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d999d6f95b9bd8f938156483da2d64ae1318ff75255a4bad30ca43ae08eb615. 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/ITMDU2400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66bfbaaf21f9cd21fcff56066a11103f8d8616c4b9d6878915626b5bb6d3751a. 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/ITMDU2400121.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x476a50c1ed4af6478786c435c887fc002cc7ecbac516242fa9a9845ed222c13f. 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/ITMDU2400122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0027e030bfebf905c3d89d3ea3ef563ea53f2e5dab81bbaadf0f8f9bf79ef92. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/ITMDU2400123.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae5a5a132d35252248a4ef06999dd7b20b5472cd082460832410d102284cd8ac. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T14:16:16Z), 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/ITMDU2400124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d999d6f95b9bd8f938156483da2d64ae1318ff75255a4bad30ca43ae08eb615. 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/ITMDU2400115.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf7b9a529da15bd396c2f2846390ab3b163305513ef02e578f59cc495c85cdd8. 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/ITMDU2400126.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451841be00e679b27127e94e467e01cd8c5747018fb0075366c3821333be9e21. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/ITMDU2400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5196d58115e7a4bc495ed776ccadb94c4cc70c8c6622c491b1a3edd3d330b59a. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/ITMDU2400128.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee5efa9e6b8169cdca318b1f6a53e07dd9db432165875252aeaccf2bdd92c18. 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/ITMDU2400129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0fe648fa2adff55a103698c55df950c5bbd73c2c80e92c28c37cbb8ec51cd9b1. 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/ITMDU2400131.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26881346f0c34a9f807d8ab6115023fa70aefc053639f0dee25b9a4be494dd3c. Chain 2 (Bitcoin): anchored in block 958142 (2026-07-15T12:40:42Z), 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/ITMDU2400135.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323ca6a26d22263aad46391e8afc94582ce2a0083f3a182f27ba62ca042a7aa8. 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/TCADA1724541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f845dcab258e6c582ed4753b40dfda31d67148320ce1120872b63fbd03b28ec. 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/TCACT1669556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a68e94aeb0fba7df94cb7abe42e4c2f8dc8076bba8783dfe7e98910d1b2d626. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/TCACU1686049.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xade3f1efc9f20478015603e0bcb7d6f82dde1b8e77c4c8956ffc3e3c8bd01004. 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/TCACU1686081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79f734b163ec9151d7d77542d26508f7b7531d58bb154095424c089a9e49f976. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/DGA062411660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc548163ef2307bf5b7873c5951907412807b4088cdc0a6875314bfe208dbcfc8. 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/DGA062411661.