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 0xd8dc1adb9a8abaebe94ea3f874e07b6318891fd5d701a8b09016f04baf3ae7e6. 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/dc18d8df-4207-47dd-9b08-68edfbe3099f.json and https://artists.proofprofile.net/proofs/artist/dc18d8df-4207-47dd-9b08-68edfbe3099f.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 0xa66e691a620481c036249626c12737814846a7577e123b1d0d7395f47715c333. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBSMU3036303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8df707d92f6b1a39019b348dd25470e61ec73a19a0731eabf87db6b29c40f42e. 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/GBSMU3036306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb51618adc09699a41110ed0a83b28dc5b46fd57a082bd0e58f1fec551ff63daf. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/GBSMU3036307.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b2c35fd309892b58e415e44f42a49fc099fa708ce81c07c6fbcca10cb5efe24. Chain 2 (Bitcoin): anchored in block 958362 (2026-07-17T04:32:48Z), 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/GBSMU3036311.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x48e6cef45d216edbfddaea9abd8fb53aec1216e645fd5bc77243ccdde0249272. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBSMU3036312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfacd8d3ab628817e63e383fdd861dcf4a388c613e0b04abde7a6406165a4bbfb. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T21:50:08Z), 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/GBSMU3036624.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x939a0d1e6efa59d352959e253fc0b8f7122a9d8cf99adc88ff9f17a1ee95f9f2. Chain 2 (Bitcoin): anchored in block 956620 (2026-07-04T07:11:13Z), 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/GBSMU3036625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7d23139772a1af9c7831faec4342cf81a0543963b2745f53a291acde05b04361. Chain 2 (Bitcoin): anchored in block 958415 (2026-07-17T12:50:13Z), 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/GBSMU3036628.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacefba256c1e048934b1798ee00d473cf7ffe5fb05fc3dc672bade34ae98dcf9. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBSMU3036629.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb17aad11659208a47b97d1e93509cf6352ed14251b820a78331f7b637da24d5. 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/GBSMU3036633.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x178258bba87851f1d2c532c5cd34e223213693280e28f4db9f4a49a189117dde. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T00:07:05Z), 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/GBSMU3036634.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3b107144526a90deda611351eec3a139158e2684c46c4e29558f72f59d8707c. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/GBSMU3036636.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a307f9d13705fd1e87a1eb378bd9b86118e072fc72c154ba42f5bf6fdf6a793. 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/GBSMU3069073.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f8cf6826f503a2e6683c113bbceeebd51c453c6699fca57f0b7e25c157537c7. 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/GBSMU3069077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4c3ea839c94534ad18cf9e1f38fffda46901151aa6b392be1505c0840990c191. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/GBSMU3069079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45637379b0b4751942331ad5d3481dcaeed2e8fe107d11da2c3c019ca662dd7b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:22:11Z), 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/GBSMU3069080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa00729161f6db4d628fa1fee7a2749a2b602e56c08c4fabb90f08ed0c9e9fb7. 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/GBSMU3069083.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ee7395f2cf5c1873ffe6c110c2fdfd5c35b16329e8f60b2bd847dac0bde7cf4. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T16:21:50Z), 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/GBSMU3069084.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3655179ec6721850e4ffc19c1113d2ada783b4f8d031ca75e3b593f4af5fe32. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/GBSMU3069085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd36d74bb99470efe21a466f65e6e88f96cd853c6f0fbeee7afbfda1206be4682. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T10:20:17Z), 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/GBSMU3069087.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed57d82cc8fe69364814220ba7f07344ad0badb49387fd9dcafa4b47b3810b7b. Chain 2 (Bitcoin): anchored in block 958489 (2026-07-18T04:13:26Z), 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/GBSMU3069124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec2cd089c54c1b79443ae36a882897a5c5ec96153f76bf331e804a51dbe3280e. Chain 2 (Bitcoin): anchored in block 957754 (2026-07-12T21:26:22Z), 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/GBSMU3036546.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x156f36746470a9c8713d75409c09b37af3fd02e35a4cf3cf1c0f0c437df548f6. 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/AR1A41800002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f01440ae06e129f5de80b21d4f5ec42450ac1a2080de22f1f42351d83f2bab0. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/AR1A41900001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x907b776a595a6b3aa65fcc54a5ccf0dd3c964635a1bcccfa221043824710a278. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T21:42:17Z), 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/AR1A41900003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafe30e182f4b835b773cbce44485b498fe73c14463bd77a6e6e57394d3bff49c. Chain 2 (Bitcoin): anchored in block 959087 (2026-07-22T04:03:15Z), 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/AR1A42100002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bf1762f21eff15b57821c3a572fc0058ea911c6b46b208fe1ea5b34418a5b9d. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T18:31:42Z), 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/AR1A42100004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc25fb7e2e30927d51ed4f33d0b12d1203e8e84faacb9408a9769f082e7ca5346. Chain 2 (Bitcoin): anchored in block 958945 (2026-07-21T03:18:37Z), 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/AR1A42100005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab35b44529fedf83f3748eca53a4fd8eed1fb1e6fb365e12407d1b4ba77bd567. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/AR1A42100006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf109109b14d74d44952466a53ba0b8cf3fc38823c949ae12d8f426a5214b1e83. 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/AR1A42100007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1d4d48316848bf62b3c463cfd4dd5ab88af5add9a0befe7e3fd9379e7a0c71d1. Chain 2 (Bitcoin): anchored in block 958083 (2026-07-15T01:50:31Z), 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/AR1A42100013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa022c95ff6dea2e8380a3f7a9ff1edeb05135602b2136061da7c4555c3f3ba86. Chain 2 (Bitcoin): anchored in block 959052 (2026-07-21T21:18:01Z), 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/AR1A42100011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3c4ed1beb145f238c5ef686c9f84b3d6f1cfb0816db7979ce78dbe6776db1ac. 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/AR1A42100010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0ac151d8407c95613b5b38f7440f87ab21e638234875a9eb23e8c73b28b9c9a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/AR1A42300001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6f310cffee0afe8e3e4f01a942e9f16280c12251e5a858477fdb33997c1d956. Chain 2 (Bitcoin): anchored in block 958543 (2026-07-18T11:58:44Z), 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/AR1A42300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21c2749b3b4411938e4d224a9212e35e00a5a4a56eb4d934f4b279d639d73ee7. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T17:50:38Z), 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/AR1A42300003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6dc5cd0cfab428fa50f4c782b3a4954a7e1d75578d31ed29cce4121c7d6b2a50. Chain 2 (Bitcoin): anchored in block 959002 (2026-07-21T13:49:46Z), 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/AR1A42300009.