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 0xc03015e5f4867a834a281378494f42a1c8cba583015df748abbf9e0e0090bb54. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0d6815ca-fc83-495b-bd5e-b81f69a9804f.json and https://artists.proofprofile.net/proofs/artist/0d6815ca-fc83-495b-bd5e-b81f69a9804f.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 0xea07e147ee13485f1e8820d94643ddb683f5ba17bc7b565c3dfefee4ac4ba9e8. 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/GBEUE2400143.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x21142d1e0b61fc46fb12e8267bb32df4afd836e14c67bfcdf732ecc48a697426. 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/GBEUE2400145.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x10a91e75d8a2fb19953ae325d09c780951c0515e97a2d82b95593a3ebb1486fd. 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/GBEUE2300196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6a158fee6290bbee4a02f714ae7080a4c8c8e70f26fbe2d7c51a8a79579ef182. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBEUE2400146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89fd590f332d49823fd709d0d2dac83c953c322c9dc87dd8fdb35f1e5f56f962. 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/GBEUE2200259.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28171631e1b1eef36883c24afeb5352b47023e3022d531c55eac8573e33ca3e1. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/GBEUE2300033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x98d6040dfd374e9fc116c3498dfaf5f8f7d472112d506667214535a93d9f7c09. 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/QZMER2354293.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1c37b520ceaef5399b079699a2dd2dc1a153f629fbf6f6651d4bf8df846eafb1. 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/FRU702200287.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66e40ea504b633b13d15a24f63439f878897a68c0a8de6ed5ee9e081d4f7f80d. 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/QZFYW1921465.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd3cf0c796bd4f38f7cf4adecafaf9a2be3f4794b5954c795442c8b44bdb4b40. 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/QZFYW1921467.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3f8d33940fe618165ee7be922529c9e15cb863f9d4728d64c034f357f2fe522. 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/QZFYW1921468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xee0b91f12c55394cd7b43ca057c903494d05037bd70c019f77886bb2b07eba5f. 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/QZFYW1921469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f7da08bc77b4ad3ac1deb84965fd02fa0c8b02590e1962530f546687bba5e23. 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/QZFYW1921470.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bc2c1dc6718c22619b922d64d6cefa4c82ab74eb305d296582dfc9c615de109. 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/QZFYW1921475.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb4e04d9647f3ccf368c8bc0b45cc43309c7537f68f34da76b01d4f742c258d5c. 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/QZFYW1921476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfecad8f024239d1550564888bc428aa7dfe0a3a353bf82c1ad39dbd094d0459e. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/QZFYW1921479.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45b06abe2596fe3a2a2eaf5282bd65a751191e179c0bad4e7a0cd2b67af18d4b. 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/QZFYW1921480.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb65e8630a31609a4131075466e3661b5befa14b3f023339f659071b207da416c. Chain 2 (Bitcoin): anchored in block 957057 (2026-07-07T15:21:38Z), 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/QZFYW1921482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b3b968ba63cbc0ea24e40edd265edfb1df21c2b739399e26574f2cdc1258cd6. 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/GBEQT2300321.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75f2e85c00fee2e5329503996c3a1615be1c269ac14fd2a40964b41005c6e87c. 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/GBEQT2300319.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e166944e899e2437ec27fba994d7987e530ae3ba4367719d004125cd934998. 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/GBEQT2300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ece7fdb86403895b4ea57599d3654a454870b1a087c4d9eabfb2aef9ec05550. 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/GBEQT2400068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d12d198e7b5043ed52fda3c0be7bc781bbacacc07824a8151339ce92d09289f. 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/QMFMF2443068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64e166944e899e2437ec27fba994d7987e530ae3ba4367719d004125cd934998. 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/GBEQT2300318.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ece7fdb86403895b4ea57599d3654a454870b1a087c4d9eabfb2aef9ec05550. 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/GBEQT2400068.