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 0x8f054a67966126534d7eddfd53f900a1a65e15480ce10965443a572a39d982c5. Chain 2 (Bitcoin): anchored in block 953633 (2026-06-14T12:47:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/325a0c1d-23ac-45e0-95d2-f096e672614b.json and https://artists.proofprofile.net/proofs/artist/325a0c1d-23ac-45e0-95d2-f096e672614b.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 0x951b9fa8c54969920612817f40e4c4a23a836496bff5daa01a8ee710662b56b6. 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/USA2P1521003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed62cdf283e259159d4cc07e9a600327e64a2228afc94197be22d9eb7518d19a. 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/USA2P1521004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6191d799f468671813663879b572bc5ba1f0ba59199290b9926886cdcc4d0235. 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/USA2P1521006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b53f6e9ab944acc78d38603e9a70158d77e7c130eb84c903a18d092753fa440. 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/USA2P1521007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80e1e4f613a1cef7396a0f49f5e8e0a668b5ba18a0a54d67e9f46b19ef42c6e7. 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/USA2P1521011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62c8ebc4fe6bbb60eee2c233d506c851ba09a73cd3e516ed152d847c01122457. 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/USA2P1521012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a579a6171f143605723414df998a6a3d3f4eeec86f30b637cd59b75e3cf1707. 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/USA2P1521014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d1b030b44252c7641d5a2262eb9e2c9ffc27a6c9d73bd308fd6b4fb1cb54a2. 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/USA2P1521016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ef0a7a58830ab1fc415bee641087bd3c6a31e66a6c16ca5ef2d79058f0a455f. Chain 2 (Bitcoin): anchored in block 960164 (2026-07-29T23:23:05Z), 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/USA2P1521005.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x423eecaf73a3171fec319208cdd4438470b61bb85143a40fa66c8ff6b456f11e. Chain 2 (Bitcoin): anchored in block 960250 (2026-07-30T11:13:28Z), 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/USA2P1521008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62903937fde7aadfb367632fec184ecba726973bdb7d97fe5bfd8b36fc2c8596. 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/USZPA0900372.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5191a4cf2efff89ecb5173994e55958f3c09bb7ee6bda45f4743d5bf8061bcc. 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/USZPA0900373.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9fb523782bf348b3be9630991e8b7d465e30fadf4d80d6b893cce926d5e06785. 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/USZPA0900374.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf8587bf5feed93a433d1b6ec3e1f9479af1b60064b4373a2b3fa387625a560dd. 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/USZPA0900377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7dcba80c9ba83b754857ba10cde566229b5fb0a9d372e4db399513b8d3b4cefc. 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/USZPA0900382.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c390ea77b6f05901775bd755d3061dc557803bb17015c5a23a3a069b7446675. Chain 2 (Bitcoin): anchored in block 957819 (2026-07-13T07:53:33Z), 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/USZPA0900383.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x596ebdd78b12039ea6d2d0cf5f0bbe86306770015b6afcfcae29fba019e41449. 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/USZPA0900384.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd5e7ec3c911ae8f64ddecf1dfbcafb08cb79cb8488e4277b0972f6839ae5d926. 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/USZPA0900385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f89a92160a1e739ee74ceb9d4396c9ed16fe04af640bc7b3390130f9379c4d8. 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/USZPA0900386.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39dbee0b8fd2d3654bc00dcc94fb9d9dea945bbb310d77b21df230dab2850edf. 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/USZPA0900388.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7ffadb5e293bae9f205e26a5185749b26fd62a853e73cb08d53592d7e2e1b545. 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/USZPA0900391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbeb69ab847e401627d230992e82cd6e44e1efca0a134bffa9b822e93f99f5fd9. Chain 2 (Bitcoin): anchored in block 960144 (2026-07-29T21:09:47Z), 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/USZPA0900375.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3aafa09a94f8e20ccbde1147bb20235e090c209f78d81e3c02ff69d3dfdf0bf. Chain 2 (Bitcoin): anchored in block 960095 (2026-07-29T11:07:37Z), 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/USZPA0900376.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9815ebf6429a3fb47ebe81a3aa380d72ff749699c50e32f13914c432048fff3. Chain 2 (Bitcoin): anchored in block 960183 (2026-07-30T01:10:20Z), 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/USZPA0900378.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x381f7ac1921acedcea4866cec8e2c28f2e850dbc3b77c85f0e04ff601b45f1d1. Chain 2 (Bitcoin): anchored in block 960258 (2026-07-30T12:45:34Z), 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/USZPA0900379.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a8569516f2fd3dfdfaefbaae0c0170758213f55482344b0b4004d2d52cd5cd. Chain 2 (Bitcoin): anchored in block 960160 (2026-07-29T22:48:59Z), 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/USZPA0900380.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5ca9fcc32ec26617658b4c5ccd8e562f85caf88b7bdb73b87d3c64169efb3f5. Chain 2 (Bitcoin): anchored in block 960254 (2026-07-30T12:06:10Z), 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/USZPA0900381.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81d96caf7d2ad9d933efda391fbe7363d6c04e88779a9b1713f8723e827fbfe5. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USZPA0900387.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b32d7616564775eec379f70e25d925303c86a1013969fa96d5a9f97e3e1c29d. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/USZPA0900389.
From Groveling to Running in Less Than a Second
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc5d0fa17fbc06ccdf59ad3949a333a5ddae6068d475e8f40299837d6b220e95d. Chain 2 (Bitcoin): anchored in block 960247 (2026-07-30T10:42:33Z), 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/USZPA0900390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa07661370c9f0c690770dad620a3159fae075ae4b544264aaa9917581aa2f1ad. Chain 2 (Bitcoin): anchored in block 960266 (2026-07-30T14:44:50Z), 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/USZPA0900392.