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 0x42acff2184010cfb77c9b736efdca993c75be66cd1f5f63ce015ceab0e7454fc. Chain 2 (Bitcoin): anchored in block 953717 (2026-06-15T01:05:33Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/8882cbca-a7a3-466c-b80b-e71b9af386a7.json and https://artists.proofprofile.net/proofs/artist/8882cbca-a7a3-466c-b80b-e71b9af386a7.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 0x44c0267127569235d51d722f5dba210883a6e7c7b8116f77fd3f682e92af8545. 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/NLRD52024412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac9d805ac4c2c0e6bdfdb7e84b7fa7567b36dd0501ebfabc68f1caaf67aec78. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLRD51968581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33ba30289ddd00910388a460222e4df6391b2286b3f1d5d725ba3d15db905c70. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLRD51968583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce477c467b0830de4ab32940fc11289e5f3ad9d804864279a86bfd7e7fb3af21. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/NLRD51968586.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98f325d783990bf530679275f9f688347d105a7df4b9af4067a7b411002e9a02. 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/NLRD51968588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa404700bac4b6ceebac79f49a4d613cde9ed6ab31f6ac6f0a61e6e84b2e8480b. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/NLRD51968590.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x725911be8e16224be857b1541359ea3db3f0ce31e615c6fd36841e6a040df4a6. 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/QZ2GW2200206.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13b3ca18e16370383670f0945df87a697c8abed56873ededb9fed773aba5c37. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QM4TX2406326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb13b3ca18e16370383670f0945df87a697c8abed56873ededb9fed773aba5c37. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QM4TX2406326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b8a3f1dfb9f72d2240bd0dc747bb78c2fa6b0a63a519b3eb251a8f60876e1e8. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLRD51968726.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58b11281b77c654636791890de0de152d2a899a0ca989cfd7087ff368558ba9c. 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/NLRD51968702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650878203ee01dcf8c30b96d31bb84ecfa4392cc8082b03fd6bc2d9a37d3d30a. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/NLRD51968422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa898f8fcf158f36b54e2bb0fbc81ed095d711014276dd03d2b0270847f3c56ad. 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/NLRD51968399.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x650878203ee01dcf8c30b96d31bb84ecfa4392cc8082b03fd6bc2d9a37d3d30a. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/NLRD51968422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3635f9580af5555d0b96959eec6d77496d5bfefce07ebf177ddcd7a256b19b29. Chain 2 (Bitcoin): anchored in block 957145 (2026-07-08T08:56:20Z), 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/QZES81995625.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7f08bbdd83470c749c9f6b69fd91fa9eb20821b32e2460f76eab5a1f421ab3c5. 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/QZQAY2557697.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50a0ce2bfd62c764d8354d55088bdca37ade2632b444d5ba5128fdeb53e1382b. 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/QZTLA2565150.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09f2f825205e1203cf854c6881a92a126c125eb614d4381f2a477dad5f8ad912. 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/QZTLA2546971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbddeb826d9d5b59d7c7a1fb402ccf80272e774a5fe9bc8ef02105d78a99f743c. 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/QZSYP2567122.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99db8bca9e3f7d2a9203330e5ea71fe637591981bb0a1d1abba623ea1f907fb0. 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/QZTLA2578382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9085f272ed22817c0369464169f815e51a330801b0dd7c6d7ed0fe1f90ea57bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZTLA2516608.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdcd018937c3db7fd7056577a1dfe8895b272908585ea89b754597806abfcc4bf. Chain 2 (Bitcoin): anchored in block 953536 (2026-06-13T17:25:41Z), 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/QZSYP2542057.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x525098f1ba7a116459cf291e683289441e4b816d6f6d8572aff3bb60f4fa83df. 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/QZTLA2565438.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x853a7af2038f34d05071fef552fa0dc070b6defa2a9acfec4ed79d60e9bc9f79. 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/QZTLA2524480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd42b2cd0ebd314009383c3c2276cb4329689392de6d4de8248c5e49b6fb6ff. 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/QZQAY2536786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x36e1b113142d9b3e846140b91d8c4c726a2d485e72a49db79836c0cf07ab514e. 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/QZQAY2551931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa903f1464f0fb55533ba8e68b2b72bb51667f7127b6681838a0cbd553eb04ddc. 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/QZTLA2579734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa789a47ca89cf450a37e9e1890687785f71bc347f51840181289517ada99d957. 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/QZQAY2583815.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x015e413f99f713bb57f25e92c581c840498ff8f98725df4b93a4c9df3180297c. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/QZTBF2305679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c4d713e6313e438a2e19c9304f94aa3ce21e3ef4e9ab328e979079a7c4f1041. 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/QZTBF2305680.