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 0x73710f993d233196fa63a617b563379aa5ae766a5d0227972b0b3acbaeafe231. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a994a639-9a79-4212-8a20-ebfea4fd492c.json and https://artists.proofprofile.net/proofs/artist/a994a639-9a79-4212-8a20-ebfea4fd492c.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 0xcea4a65271aa2eafdb543ec4d0ca6f86208913a4f0711266029173105c066bd2. Chain 2 (Bitcoin): anchored in block 957770 (2026-07-12T23:17:00Z), 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/ARF060800488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30f27ede4dfa2f58507515d36354ba22587c7dc92434cc204aa7e4c1ccaf55a8. 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/ARF060800490.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb500caca9e8b4e157b9168a4cf4261228397f7681e47c9a07f465c6b81cf779e. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/ARF060800491.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5dae6ef4497709eda128fb2b3df1c5e2f2adc96e13b2d51ddfdb6dd8878f81ac. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/USASJ0800728.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x831c3cff8eb20e1aa960b4b2789ba1bb6afbf99c8b96c479d90c5fa8f1c576b9. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/USASJ0800730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2669cf533de6f9728e7cd62df21ba7382cf3ffda1b61c10d3508ff1bad2691. 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/USASJ0800731.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81a23e3a3d8bbd25d8b789523076f3f3384ece4c0b9ebf78a63791ade933a67a. Chain 2 (Bitcoin): anchored in block 958706 (2026-07-19T08:50:34Z), 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/USASJ0800733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x104407bf22a4a85ca15e55055bb2b82baeed58dc17c3cb8b9d48258ae962ee2c. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/USASJ0800734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x401d462c49353a84912ada1e628effb1c5bfa70250d64bf76a28a3846574a7ab. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USASJ0800735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa814881d8bf009e6787f6019427ccdc8e2688073e01cdf599b0c5d39c2baee0b. Chain 2 (Bitcoin): anchored in block 958987 (2026-07-21T11:22:01Z), 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/USASJ0800737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fa0005c7627bf23f23a554f25b72c169e2cfd2f6437007c8767d2d43ca9b498. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/USASJ0800738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb0ce0dca4d1ca880d0319b6e1f27174191c3f71c812c45f794bce979d1e4eeee. Chain 2 (Bitcoin): anchored in block 956841 (2026-07-05T22:14:35Z), 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/USASJ0800739.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf83b6cc79270aaa4d028bebc5078649ffa4f43332c88625153d7d49c26717bd8. 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/ARF060901624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x57ad3145913a344b662ea7ceb4f95e5cb443e9b93dfd82c4b34360ddb77d65a4. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/ARF060901625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc6d90f23096dbe3a7ab1051113d013535f8014825c47f72da4bebf25a7e6b9. 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/ARF060901627.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2c584dbea83eefea417d434df9305032e6a05620565f7402e39a21be99dbb5a. 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/ARF060901630.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2edab21a7636c553d5249d2f1b3460d6a85a26f55a42ab20d9cf0555a681591. 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/ARF060901689.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x378feb05a7ce096393e14362ff38da3a543435dc287b152beb903c541a7920ff. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/ARF061100497.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a96ee7b8642c3f7237777405a2aafdc8a4ad6977c50aa378344174497773df. 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/ARF040901389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0c838438576b854b79ca960fb94cfaa6daefc89a94cf7eb7ad6e583b8fa801. 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/ARF040901380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10710ba31466c67dd52ac8bc2cce28f8cd38164d0e43e2cf90bb94727630832a. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/ARF040901378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4875d13123fe4e3bbb16988c72924208533c251f796839c99a7997553b30e4ed. 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/ARF040901379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed0c838438576b854b79ca960fb94cfaa6daefc89a94cf7eb7ad6e583b8fa801. 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/ARF040901380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b4cd85bfbd8717d94ebbc14f9f61c199cbd5b0246f60999b0d9c2d412f96ee4. 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/ARF040901381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f4320a565f6a0abf5a32f025ba93176f14bf9bc84b2712f6cf2c7e31fab4e6c. 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/ARF040901382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x214c311e33f91ee44951c43a1b8a3d7e66f8e3cfabe2c3da8d4bc7d94e510384. 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/ARF040901383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd98cf0e05b41280c2f0342c23bd0bfb47adea6b09e8f97b28b511eed9156c8a4. 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/ARF040901384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x70a636135e57e280b176ecf7f1744db1cb2850d9c73f3b515588f10d721759a0. 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/ARF040901385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21294be75d96f4c535b0edcdb0ba27f8c3d3c837a1eaa9b13c046875ed0f92b3. 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/ARF040901386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66b1fdeab101ff268232622abd128ef8fdfce98d0431d054e4634fc168214660. 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/ARF040901387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba83e045458320d461506df4530943c051149f97e2a918d551c64dcc5aabf9b3. 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/ARF040901388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1a96ee7b8642c3f7237777405a2aafdc8a4ad6977c50aa378344174497773df. 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/ARF040901389.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85a0665d53a4345b69c8fa60f6d5228f7d6c7cbd074a44cc9b81e8d929ac6106. 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/ARF040901390.