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 0x8e72dd6500a3b331a2d3f0efdbeaa57b8fb7028ab5d1d03628241d971955494d. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/168f4739-ab6d-4587-8061-1dd0329dc072.json and https://artists.proofprofile.net/proofs/artist/168f4739-ab6d-4587-8061-1dd0329dc072.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 0x4f6290b9286c961ebe45371379d02b34da91da9fe2d65c3351197e42f3391891. Chain 2 (Bitcoin): anchored in block 958622 (2026-07-18T22:58:55Z), 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/USA2P1872730.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb87f55e4a94d34e549c6f322343909031d6a3b134c2317cfbea57307d79d41d. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/USA2P1907111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76966493d4beb6932803cbc9a0b5b74f7713ecbbd685713f439073a0adcb979a. Chain 2 (Bitcoin): anchored in block 956500 (2026-07-03T13:55:21Z), 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/DEEL91626246.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x693fffe90e9886393f16a28152f06bb8494cc1f31614e4aeac04cebc493fdcda. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T16:32:21Z), 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/DEEL91626437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e013f91b8ca9431828992072a8182709a587789d1287da9a7953c82a3e6607. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DEEL91626713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf840029638205b7c2afd7ae68eaf13ce09e2a88fe7bf91c245399e13b27cba45. Chain 2 (Bitcoin): anchored in block 956484 (2026-07-03T10:47:44Z), 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/DEEL91626714.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5f532db0e2c758c7e4ff0e5f11849160d8dcdeb03efc9923331bcbe3ad03b3c2. Chain 2 (Bitcoin): anchored in block 958371 (2026-07-17T05:45:43Z), 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/USA2P1960828.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68d67a716e30bd3127f02a7b11d72bdfa4a14e2067c14f74e473029cdfa08f22. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/NL4WT2000075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4e013f91b8ca9431828992072a8182709a587789d1287da9a7953c82a3e6607. 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/DEEL91626713.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x385b5a349084156a7584720e46dcd1a294177c1825d3e790366a1bb477a23d7c. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DE1ET2399932.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfdb9604b3c996b20badf7cd90f76b551f8037e675b310e64be0924ad71443c47. Chain 2 (Bitcoin): anchored in block 958728 (2026-07-19T12:24:55Z), 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/DE1ET2399938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x29c85abe8a5954fc2c3c775181226ffd8824ebbdf79ae0d7ae380e2bf38db153. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T17:49:48Z), 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/DE1ET2399942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaa7070d0e55b6903d55ff1a44a823364f821f63caf1b431995e973e839893879. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/DE1ET2399929.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf868de83d5e9d178a304f0027a94b8f509dd406e9a53e8f8226b88e09e44739. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:51:57Z), 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/DE1ET2399928.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dbd126ffc78e934946b0ce0dfc949ee908c0912d31f867bbd02a85b6d7cd80e. 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/DE1ET2399927.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa58acbc9aa1ace25bba9eb01da27589e734006e3da634a921a8aecd0762412b8. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T03:02:04Z), 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/DE1ET2399926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dcc6c5162acde4fa1f242bc92bf850ff92a1a66bd0509a3e11d5e24a7956413. Chain 2 (Bitcoin): anchored in block 958639 (2026-07-19T01:18:30Z), 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/DE1ET2399930.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f2a7bb3c25e40a01fbba173268366e17e04683a6e231df2bddd176695c7ad0f. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/DE1ET2399281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1ca658490b6e403248d218a03a287def83444fbf82a1ddf0bd7f20c8b4acde95. 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/DE1ET2399282.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x33fcd1af14319bde6e57da8fb896b22c0374914671f2de9a9255a327d69f57f5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DE1ET2399283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01fc807fe650d0dad64970d7ea953be9a939e2ec98d7c7d10a361fa7e2831ed1. 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/DE1ET2399285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x88c05637c73e81f6e39f0fe153011a5ac1968d2b4b5629086a2384d3174a6ae6. 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/DE1ET2399289.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34898f3ed093e941495c45a00eb0bc4018f3516c1a10caf7a4ffc808efdf7c1. Chain 2 (Bitcoin): anchored in block 956420 (2026-07-03T00:42:11Z), 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/DE1ET2399292.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8660702c900a057d21dc94621dcc2defd009248561e81a5722ff564ae63481ee. 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/DE1ET2399295.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcee8737b7da15d71da2e2f7472399848b9c3d464cc3c850366eb659bf85bfb33. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T16:25:35Z), 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/DE1ET2399297.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7edf3f970275c905fb6cc80e163c91b0b53633c14ba38dc27c22f4907690c06. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DE1ET2399298.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9995725ace71131557236273b9bc410a315e529550287a42360bd9d8b2a92a94. Chain 2 (Bitcoin): anchored in block 957852 (2026-07-13T11:25:45Z), 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/DE1ET2399299.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf06b61f323a20c897b3a6a2fe9bc0a5b996f6bc35673f801e372c2883a10de5. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/DE1ET2399302.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccc47f4a6f327910975820c1df3cedbcebb2df81adb2367e8e17764e2f578cc6. 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/DE1ET2399303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf690da4a9edcf24f6826833ee7d1b9ea06f2e8cc4f38f3e0f0276fe31b03fa29. Chain 2 (Bitcoin): anchored in block 958251 (2026-07-16T06:29:25Z), 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/DE1ET2399306.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8fc96ab4a5eaee32a9ddc6f1b7e8347b3a38ab884e4d1aa848506ca5dccbc5c0. 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/DE1ET2399308.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2631e0e9287448a5858d56230053d8f2e0a3c13631215ffe728cf84de5d8cfd5. Chain 2 (Bitcoin): anchored in block 958793 (2026-07-19T22:59:45Z), 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/DE1ET2399332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x811022f4607dcdb4dbd35a89f8fa52f0ce53b6ded378a2bb1f82ad5bf896efd8. Chain 2 (Bitcoin): anchored in block 958196 (2026-07-15T22:32:46Z), 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/DE1ET2399333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbcb53b23633173bc8d1bc589f35d8481b33ca2d76695f0064d4e1c3ddbfdfc92. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T09:46:48Z), 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/DE1ET2399336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa4e0d7a01a5d7a9bad1ad7ad04032016412af3cfca6849fb43e19070c8842c7e. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/DE1ET2399337.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76299f0410de78e18d90ab5de990a5744afba1db8fbb7764857ca9a2d8d6fe5d. Chain 2 (Bitcoin): anchored in block 958390 (2026-07-17T09:35:49Z), 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/DE1ET2399393.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13f427d84f3de120862944361477cdee84eb69659c5d55d191975f291025201e. 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/DEL711910017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9244c9eb196cdd6104dbe1205e8b851d740e46388877de0a97840116585c9b4a. 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/NLRD52013652.