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 0xf3f17d0e892750785be076388369cec497ec3608a1df9531702865da8d7af37c. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/f9b5bfd4-b85b-4f61-8d46-952bc2c1ad4a.json and https://artists.proofprofile.net/proofs/artist/f9b5bfd4-b85b-4f61-8d46-952bc2c1ad4a.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 0xe848828ac5db9f5b5799d680ed6c6e4bf96ec58d3d4ea527a317a09407bb91dd. 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/JPZ921706371.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cdd80f872c799268eaa978876050e46c525cb3c0ddf70133504af4c512c3a9a. Chain 2 (Bitcoin): anchored in block 958876 (2026-07-20T12:15:48Z), 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/JPZ921713723.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62e908d5f731f84e84e020552f7efac1a441d8ab1a144092cf7e9baaedd88ec9. 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/JPZ921708420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8007e87af1f49f1910fc5d0f96bde39dbc5ac8606c89cc4f9edd794b0cf9d2d. 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/JPZ921706372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x426875b318d66491f24611fef67bb48ede925a6b22507cc1982a2b4bd23c9d8a. Chain 2 (Bitcoin): anchored in block 959123 (2026-07-22T11:35:32Z), 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/JPZ921901567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe2977e7e784e27a4c72557367f78ba37470e10303937390617fd75aea96a9364. Chain 2 (Bitcoin): anchored in block 958880 (2026-07-20T15:27:42Z), 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/JPZ921901569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8868b4c654791f0c71e179149e2178371f8a855995e3315d55eb87357bd35090. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/JPZ921901572.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440688b7f12c62772b1bfa08d152033ce024cc4a19a500faaa520e0f1f99290e. 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/JPZ921907685.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb43be7955b3454cfa9343a2eb209a3101af2483b7e5c66c1098134bd95257d4a. Chain 2 (Bitcoin): anchored in block 958822 (2026-07-20T07:08:24Z), 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/JPZ921907686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb2fbfbe88bdf15a733e3be34c64835aa8c00af1d556f972da2b6a31f39a7d8bc. Chain 2 (Bitcoin): anchored in block 959118 (2026-07-22T10:01:58Z), 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/JPZ922105569.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8737ac329b35cb9f297b326bef086b97b1db32f4c79dbcc05035f0cfdbf006f7. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-21T09:09:20Z), 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/JPZ921911140.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4182d53f1e2e59e06e777c0c3addf3b298ebb25fdf8db097df876307fc002380. 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/JPZ922102500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5ea2c28bdbf70d53ea14c68ce8626fe81f27f35a6585ee168f6e01804e1ba20. Chain 2 (Bitcoin): anchored in block 959144 (2026-07-22T17:57:24Z), 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/JPZ922206385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x505184c7a6ddba6f6e6bb1d5db896e2c0d470d6e20cf5bc792bb506f785fa2e5. 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/JPZ922301442.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xacef09fe1893cc91de54fb5efd8ba01b7a7ab463b9f9bd3929cf97b96d7cc7d9. 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/JPZ922401106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a8628dd2e22703c8c1e9ccb4e2cb61d52a6e35b2fca407681e5326e9f307168. Chain 2 (Bitcoin): anchored in block 958529 (2026-07-18T09:21:41Z), 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/JPZ922401101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc5213ca775031c9a95cff6cd81f63a6fbcfa6fc3e161a5d02ceb3ad7f44d994. Chain 2 (Bitcoin): anchored in block 958924 (2026-07-20T21:20:48Z), 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/JPZ922401105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b89d8fd1e68d19123d1e0095e3b07432fa0eb59b06596b48002bce865a007c6. Chain 2 (Bitcoin): anchored in block 959155 (2026-07-22T19:23:06Z), 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/JPZ922401102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf699f9b43b4e3193d958107710de6bd573da9adda53fe830491df2a26b9f591. 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/JPZ922401103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3a3f3db1e2aed880d6ee7ac65e69dc965c1c439ca060e84331a14cbf54efae3. 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/JPZ922401100.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe45aa44f0d4c20bab664e61ba96c0fa8017fc62804b1e4d5b2229544a0ab949. 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/JPZ922301440.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc466f33fcec522a5bc69b675db47651d2c0aef6a801544135c14323c5404cf5f. 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/TCJPB2451027.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7ae38b7748c35c1e9589eaeaa9389c34b903bb7785fd95042eb75d0b0df326e. 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/TCJPB2451035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b762faa92862ba54569ab0bb1386d41cd9180b3ea80052f5922c0a56b485d16. 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/TCJPC2487646.
Garasu-no-Ringotachi / North End All Stars
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0f05e7ca5d3bad31a2bd40b26d86ed5c11ae416cc48c3e682e97a8d6b4cfd0. 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/JPZ922500806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0d17b99ab143540b1ca16e9f76308204da763db3f3b32b94c96dd3c0021e10. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/JPZ922500807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x521139f4ae6d0fd0b85e167c19b70bf883436200f16ac74b56ae88dc4043a9ef. 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/JPZ922500808.