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 0x277c6c7568ff0d5fe2886ce6f026a166d92e782fc9fea85bf495341d0a50c2b7. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/aa92b48f-332c-4229-abf0-b0dc493c0a41.json and https://artists.proofprofile.net/proofs/artist/aa92b48f-332c-4229-abf0-b0dc493c0a41.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 0x3a4c02ef32a0963a57eba338732702368ce1fc7b9df8e2870537027f240aaeca. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/QZGLS2283548.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b109cc1ee849030ad158d0cf547106e5273f1a3c569036bc15d1d887b6b1813. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/BCIH82301566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcedfbc019b09e6c455009408d09d1a62857c516cff8c2ac9b38ff6e23a4390bf. Chain 2 (Bitcoin): anchored in block 958992 (2026-07-21T12:54:43Z), 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/QZGLS2312724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51a33a6cd07fe615ad632b34d67edec04cd0d723475cd0a0d5784af0be95b77d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/QZMZ92370430.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5690c76f104e6c74b0a0e0517eb5313f94414dd3bc1e25c64812427a978a3818. Chain 2 (Bitcoin): anchored in block 958980 (2026-07-21T07:04:12Z), 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/BCIH82302295.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc44d0d6e8b28f9643e9e8ee114c7d2241848dab8db775bc241e8b85d221348d8. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/QZNJY2343276.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x641d10caaa4b24757e7990b4fafe3b72827a383a0099ffb622282a672ffb45a5. 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/QZW9M2338981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc10286cccbf5d0d9e928b31dff2be599cca4df387777a7ceb9d45b119c45e8d7. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZ5AB2466777.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe93ad5afe04d313e41f21b5ef197ec2d1428c233cabdd4dcd7963e582ddc41d3. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/QZNJW2446777.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58d75f367a561df9d95b5555e7e5c169887b75b3fa1b0e536b925362a96d7b9f. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/BCVK92401345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5603692299737320e0035741b92e3fd5cd8f542f114e803d625ea66377f35d16. 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/BCVK92401401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c6d9729fadaba7061a35b3b1f322b88dc73b2a4f9dcc6dbdf2ad37c1edc3a01. Chain 2 (Bitcoin): anchored in block 958211 (2026-07-16T01:49:41Z), 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/BCVK92401786.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a367d0d922b763f537411f507a3f3785d802c6ab513babb333167effc1db1d3. Chain 2 (Bitcoin): anchored in block 957866 (2026-07-13T14:54:25Z), 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/BCVK92402060.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe899ce7caab3261d389774449bc84049cc581bc247a6c9bad608a1be4a823ae2. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/QZTVM2444733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e946913b03c854096bacf4d969598ef70fa16cafe5f16618ba355fd2b7226ae. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/QZW9L2434355.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e6d34fbcce659843cc32be904d95824025cbe58bbe09cc0f52374322226f8e. Chain 2 (Bitcoin): anchored in block 958695 (2026-07-19T07:37:00Z), 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/QZGLM2513236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9843ba1b953b827b87809e21e20935396a9c8458e95f462266a91b3eff7c9056. Chain 2 (Bitcoin): anchored in block 957872 (2026-07-13T15:39:45Z), 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/US7VG2516806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed82ee033717aac86fe43a619907da46e2304734fea04864d04c2854fd1f629e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/US7VG2556943.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8633119c0b23c39187a005d20682286d7a126114b943f687eb99940fc3185359. 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/QZGLM2541644.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7ce7a32304b10fcd866e3f31fe823d0ef4e645b37ab96e5b2fc6667388ed304. Chain 2 (Bitcoin): anchored in block 958455 (2026-07-17T21:28:36Z), 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/QZGLM2551743.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a517d6c10b6365d1a8d38be3048ae2033a95cb5b50848a0cfafc84dcd0ddd3c. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/QZMZ92572727.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcd37b2841e02643100b1021c7b5f3c790f175c064382a8cff6df04da598a8432. 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/QZMZ92515830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1a1ab15655f7382cd0ac720e5b4c04aab71a6b73c46d2c84dddf6a954ce3366. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/QZNJV2527070.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9b039725472d0c959a3a0641b5c7407038ee0d188fdd65a02468c7f580dc96ff. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/QZNJV2572151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x18c4c87907b4f09a953cf1f5f51a5b3419e6f2b950bf653483f8bb9f52284d35. Chain 2 (Bitcoin): anchored in block 957779 (2026-07-13T00:19:08Z), 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/QZNJW2563825.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6a0d42e9c9de7bf772cf38056d4413716df2f1a55a8bee23c6717d0521e72f0. 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/QZNJW2563805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260404260596ab1ed919b2266c8bfaf093f919e91d0d4d50136111579c2c2b16. 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/QZNJW2563809.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a16f439ad11757c5244abb963f53cf09a0519627aef282bb618cedade5ba06f. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/QZNJW2563830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc455e69247ca925f8379a0307865f19117b0218ac71652288fb50d5be1b45a59. 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/QZNJX2528056.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1708082e695c9c664a00151bf7f15eb205602ef0ff70b992914c4a8028aad0e. Chain 2 (Bitcoin): anchored in block 958774 (2026-07-19T22:49:37Z), 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/GXBAV2159983.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0914e5e2e78cc41b93df67764e5e8adbe9c349182fc39c1a072d40e7d7d7916. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T16:31:49Z), 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/QT5M22599705.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb71c4466749c1a244629a8866dace72fe64688996deb8fedcdd746d25ffe7c1. Chain 2 (Bitcoin): anchored in block 958775 (2026-07-19T20:13:58Z), 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/QZNJZ2518436.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fbb5c866a3f7631949f1cb558fbbe907e47f99c24013e18c8cb95078dc69ce4. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/QZTPX2577005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aadaf532be207e3fd09923525c9014bfce1cf94b714f7bbfacbe2239a4e4b0b. 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/QZMZ92370193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcb5eb9a89e0eeb6ee40b27ed8dae89ecc22ebe7e75bf76acf7b828e125fa164a. 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/QZNJV2576439.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73a549ca9dfb11dda14a975f401c9b8d43325be0b7b787ce33fb257e34090511. 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/QZGLS2529644.