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 0xff97738aa9c9d95d3c47fe33f7ec6caaaf7173089a7ba8c3081b131bf83434cf. 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/a5898dad-12c8-4708-b083-01aef10f2c12.json and https://artists.proofprofile.net/proofs/artist/a5898dad-12c8-4708-b083-01aef10f2c12.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 0xe69f4609c881390b7867102a9b143e65636d1e77c00cdf85ea23459e35e5f853. 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/SE5752310880.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939fd52a8f16a85c26d757ed346b46dc08e27cc26c18d7c9c3da73932312f4e8. 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/SE6I32372897.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91e4b89c5ade4c470662c523985975a6f2aa0b3f6bce724b25d002f74002b89a. 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/SE6SA2335054.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x448c6c17cbeed64cd5d8dbd77f39159fd4737dc6f16ea0cf32e9fe746c71c0f2. 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/SE6XW2309243.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f6e3400de36c74337e8ef113897aaaa0be59afe24e777ac51d78be4e6a42bc0. 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/SE6QE2376663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2680f3c3068dc47a0c818eb0c0b7399bc48dbd91c152a503c70d558593732b6. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/QZS632296561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc887bf10bf2bfa9b936c77bd19a992092ef9230a4c89b8e37370194b95fe3565. 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/SE6I32498794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e3e761a36008d560fcc4a70ba2f0452f2e47c93444a9d03c5a18971e1440ed. 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/SE6HN2422009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x611762e8b1ce54944d8df23d8f2879d716f4b77e9257147b1bd29202f89cc8d2. 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/SE6HN2455538.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbee387f6f0a281a249351715afa89b2504e0a3a1ed6d72d1e6fc31911e6edaea. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:22:15Z), 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/SE6HN2482655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4334592728a0c7633cc5569064c764091eb67291f359042e5a6206874ea5e516. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T17:17:42Z), 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/SE6I32449352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc497906f7db5ad33d32c2f0d46ab01a114583b8c8c1dcef478073617390e2934. 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/SE6QE2486547.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50e61362358cc46f5b37e0f24cad293c16109d95a5a40ff3f11f16798cac36d2. Chain 2 (Bitcoin): anchored in block 959024 (2026-07-21T15:31:18Z), 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/SE6XW2418893.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a5b1dd080505b9952b8c26f360e50f2ac56604447d562d503ce675a0c27cef1. 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/SE5BU2540814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7cd3b836c2b073a250b79320e9f21f6242f209dbc97eb8dc1c8c2907d2e2bd8a. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T03:47:17Z), 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/SE6XY2519803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22ef018e65fed9cdf98bfd6f4b811407fcda3908ff067d32ac19d9d1b34a4b6b. 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/SE6XY2519804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bc14d7e1ae397ef869c3b5ef80dd6acfa99883961b2bad838c678d7556cb734. 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/SE6XY2519805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0416ddaf3bffcd54a7fe325b70051bf3dccbad7018e3b8183ce95a8609db38b. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T17:56:19Z), 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/SE6XY2519806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24eca223b0ae408fe472a4246e443f4248e3d81b0b08c1fb754303637eb8df9c. 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/SE6XY2519807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x47ca8663181b3db1cb3b9b0096b65ee83da13eabc0db51b51db201ea962da030. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/SE6XY2519808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x607c35490725cfb546b664d4bd9bce248cc7a76c96e6b841471c3732e3422ce9. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/SE6XY2519809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab7fc08bce44956c1558fbb74bfbf59aaae8297de0ee190c3fe3a1878a09f8c3. 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/SE6XY2519810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa56c0e575d8b9a478ffc4c512ed6b9263a1197a5ca40d3e7147136cebaa6643. 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/SE6XY2570794.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x829060c1928f346e378dc7aa57615745a584bc7afee665a002d1df1c44fd1b41. 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/SE6XX2506855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45747f50b6d78e16a8b2d3e1f28cd50570e696c22d5c404cc3cad8d3ce5542db. 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/SE6XX2557949.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x090019a41dece4f2432c0f467473edf2f07429f7e14735da7ab9f2d29f00a70b. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:41:43Z), 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/SE6SA2535479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96aff6e98f1ea0756655d5f2855dca9148a764b629d33f029de5bfef400dcbab. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/SE6I32525293.