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 0x0b815f15930c3b13ba315ab1d9e0d7da9c537304ac81f179cfb3b96d772c4771. 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/644ab86d-55eb-4bc7-8579-40e670a03214.json and https://artists.proofprofile.net/proofs/artist/644ab86d-55eb-4bc7-8579-40e670a03214.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 0xe45af3d409ac6a2a2cd0fdc18cb1204e83f97c9e395d99861327fe31d68374ee. Chain 2 (Bitcoin): anchored in block 954130 (2026-06-17T19:07:14Z), 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/SE5BU1789479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe8231ff11273e763a938c14dd4223f5fd44af90224231355d5dbd225ddd02149. 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/SE5BU1718599.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee00172f06141fb2f73339085d5e029455965b3aea3da61d7c72b23b7b82b02. Chain 2 (Bitcoin): anchored in block 957041 (2026-07-07T13:25:45Z), 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/SE5BU1765219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2fe216722f05c3cbc0b8381e1ed22830b3592150edb5b3ac0ee2026220dd5c1e. 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/SE5BU1736359.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf7375a2fe159759239094380c5a354bedf3e5a6350c0059502f5823faae59ba. 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/SE5BU1780408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f8860aad93690bccff46e45017b625b5624b9a1666351777267e9a73b8bb0dc. 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/SE5BU1719674.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4d33db2c81d825d6dd7a6cbccd090c89f076047d7354a4a828cbd2d02ab27ec. 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/SE5BU1768695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1e69de983036bdd3d43836c5dbdcd58c76e56feb7b2d5dd64e11978962e4a1d2. 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/SE5BU1842062.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0adf599fec08859b78bd443cac6aacea922f60a2c65e80c9f4f2aa3a4a9b1e8e. 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/SE6A91987502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2935363dcd00e255447698efd067249c277d7435f2af6bb2a33e5d3c8c27e201. 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/SE6A92071003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c0d68b6f1432a7e43944454b7e3f5ab4034e5ad8bec70236c51c5364d9400e7. Chain 2 (Bitcoin): anchored in block 957073 (2026-07-07T18:39:05Z), 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/SE6A92083146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x128fda1fcf1a2cb62ea1282d1680a491184bb47b135dfc8ffa16dfaaae3777d2. 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/SE6A92083148.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a08aa12288667ab1cf3d3455edfda06c0c43dee1a78907ac1af4a58a4695db2. Chain 2 (Bitcoin): anchored in block 957052 (2026-07-07T14:50:41Z), 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/SE6A92083149.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2935363dcd00e255447698efd067249c277d7435f2af6bb2a33e5d3c8c27e201. 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/SE6A92071003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1c8af0f05fcd8acaaeedb29d4bfa374f8b4bdaae3c79f743d2a02adb0f49499. 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/SE6A92083150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad6180b266c025b194c27915dcdf702ac31f486bb2265fd911fa9b564cc2e6d6. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/SE5BU2157000.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355e133648f92bdc314cd1b7cbe3c6f556259eb82b5fa501ae91c00f9d69f34c. 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/SE6SA2140464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972b2b1548499bbee83349d10699ef0a7de6b2c5bad275f9aeb93eeae332a765. 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/SE6XY2120871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x355e133648f92bdc314cd1b7cbe3c6f556259eb82b5fa501ae91c00f9d69f34c. 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/SE6SA2140464.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1b44a5d4aa8b3869710ee3d16a2d498e08826d67a8c7ca902dd33c191ace3f42. 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/SE62M2106010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x552381380176a0f4893e1162bdaa1512742edc95b44d94a369eb009f23176bdf. 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/SE62M2106011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x972b2b1548499bbee83349d10699ef0a7de6b2c5bad275f9aeb93eeae332a765. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/SE6XY2120871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x535dc198ae4e4b09dbec521c9b54fe956f078519a11c1656485d48ca93752e3c. 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/SE62M2106013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x55816390d25ccbc319fc8c0dd96805369b8d9ee8f8cad286ad90402e27b4100d. 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/SE62M2106012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ad6d02dcd250672efb70cb3c94992a28ad46a7d954106eceaa4474751851bf1. 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/SE62M2106015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x139fb24f4dcdb214b4126021700e83cfd9403e5dbace6e43429e23f3a0d2d542. 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/SE6SA2201802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x40f64bafd4e18f0dc78e7b79ad328b31f19981d548d2cd0d97b68fd67bbb323e. 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/SE6HN2304081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1a2995009464c979e2c56f5f450c14ab31db8f55f06b83a760d834e551fad190. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/SE6HN2396179.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7055327514f5c4fe433d7431c80d3207e4ce596936d4d2fd749629b75baef55b. 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/SE6I32258853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5058ee52a708583b385872ce14eba58a99579b9bd66923868a1f7253a711e2bb. 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/SEYWK1700502.