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 0x367b13365d7d4aa94aec2a828054f6ff86836f52b2623d1109a093d40a752c8d. 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/e58cba48-6a25-497e-9d55-3edba1e4993e.json and https://artists.proofprofile.net/proofs/artist/e58cba48-6a25-497e-9d55-3edba1e4993e.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 0x617701cb4376e77bd94497c85539f26320535d605dac6250fdc600857395f18e. 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/DEVF42200862.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb28e27bc5d98edf515a01f1282aa2721bd27978545b36e94acd6e46cad21f2e. 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/DEVF42200814.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c926ca868f827ff59ea17edcef6c0152009d449c54ec569110a5e025e7bbe7. 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/DEVF42200863.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x63b0ef8b999697c4cf6d74b42c27b010b852e2e854ffe15a4a9153815b67e950. 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/DEVF42200867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x440e909e7350267e4b74634f5415686e8b4af662fb399858174d59203e6ae6a5. 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/DEVF42200869.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x42423c3a5233e5a2bcde503b63fe2e929d4245d7a3933bdc5c3b84d767efa2aa. 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/DEVF42200870.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe62036da90617b63546b6a9385630b39633865d1e753f15df0ba0a8151dbab89. 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/DEVF42200871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26a7552e2475eb5fb84b1e47cc5a97250acfb6b6d28a9e9e48df63f2b1555a65. 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/DEVF42200873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a4b088193e8ac21a1647c1ed65482f1b336acdb91fbbdf141b0d7e071966517. 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/DEVF42200864.
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 0x2ed05fc4021e22bac7e04e866d9c534838b7f20e52b366ce993fe93db2127c89. Chain 2 (Bitcoin): anchored in block 960220 (2026-07-30T07:28:30Z), 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/DEVF42200865.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76b9f11b40cf39dcac4e565bdeafb10cb2775e9bfe445ecfca9ce68b68091e0f. 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/DEVF42200866.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7acbed6511765c4ea34561b49905f1b1dc501778311b0fa7dc052623f5be537. Chain 2 (Bitcoin): anchored in block 960344 (2026-07-31T04:14:58Z), 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/DEVF42200868.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd70dec3e571a813e9ed4b986a6f75216be03c277eda107f99d6d0683fc8f8783. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/DEVF42200872.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23822fb986dbb2632237e3ca6cc528ddc6a64553fec4a8c99ab0ae4bb1944441. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEVF42200874.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xffb89009e0cc6eb1347e2d3984f962eff616db20f60d54644fc8047c5a3cb624. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/DEVF42200875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61d1e996f2812592718fcb16856b290235a8fa4fbeb5584ed436d430ac1b16ed. 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/DEVF42201155.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b36552964d1862bc1eb7a22cd7035714afa16f7552b16e467f921672ac7543e. 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/DEVF42202017.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd91f94e931c2342cf1c1ca5ce7c0f7a920680f64ba56c367f6e5a9384e03074a. 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/DEVF42202018.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7944f80959f78cbf676966e579133100b0dfced76126ddcddc5fd531a5c51b1. 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/DEVF42202019.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd8758b327f5a9071294df65e2da8d0bb9c6a344e2f8ff061b21a07e6aa8ae25. 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/DEVF42202020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x574ac3366024e26505e3c636eff441cde7c6644aa49dcc38e039c6f9db7d5510. 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/DEVF42202021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f08cd2fef1100be0f8f0739185b51aa20ecacc2c424e599c86ed4c16f70d6eb. 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/DEVF42201909.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae1ff02a87c8f2679decb2d8afc1e195637563df149081e9d470c4be05d5aa65. Chain 2 (Bitcoin): anchored in block 959132 (2026-07-22T13:20:46Z), 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/DEVF42202016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7aead5f86576a2a8936176b04ed291c89a25c0e2ce1c8704c9f2c61f7049c4fa. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/DEVF42201962.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2520299addeb3351cff5b52d2e63efc3878b308d88ff48dcc2bd040b7a067ca. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/DEVF42202022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0e8ad7296feb6122c469c9005c8ab67b1b86e62ce86b00d71403ce4e3d4913b. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/DEVF42202023.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944597d978e9adddd528eedbff7930521fefef9b8ac02187b9502e44fe393c28. Chain 2 (Bitcoin): anchored in block 956856 (2026-07-06T01:25:57Z), 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/DEVF42202221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x944597d978e9adddd528eedbff7930521fefef9b8ac02187b9502e44fe393c28. 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/DEVF42202221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x894d4adf033004287698006d1682ac03ea97cc4aff98b193c6850df433a2d1fb. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/DEVF42201740.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb137b02ade928cab5bb4e57130d257fda0995500f8eb17a74d2c02652a53efa6. Chain 2 (Bitcoin): anchored in block 958137 (2026-07-15T11:26:49Z), 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/DEVF42202257.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe11503706b376dcd1de43f29ac38c7a7fafb9a0d5d294ab105a614f77be33568. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/DEVF42202281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff0cfe022a0eba93c0b547fba2ec4eb68518cf51e85d52ecdf4b224f2248f4ed. Chain 2 (Bitcoin): anchored in block 956713 (2026-07-04T23:03:25Z), 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/DEVF42202323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9d44c49714ecf0bc85cc707d2473da39152558eb53e06be414e976b08602fb8d. 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/DEVF42202391.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x845f8798db8f2f5bb56bd6c6d340097e726a7dd25fdee22813acee95143b51a5. Chain 2 (Bitcoin): anchored in block 958350 (2026-07-17T02:31:22Z), 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/DEVF42202116.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54297429113942ade8b79c533a37e0e5e6ca475bca70a573ef42dd65be2b08c4. Chain 2 (Bitcoin): anchored in block 958785 (2026-07-20T00:21:43Z), 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/DEVF42202154.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c7bcf34773c8bfc2e2c22819a3a697900bad45e89b49a1c729fce3412304df. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/DEVF42202451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0c7bcf34773c8bfc2e2c22819a3a697900bad45e89b49a1c729fce3412304df. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:43:16Z), 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/DEVF42202451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2776a91d663f898acd7e280c4daee55a7478292f9a755ca92daa6373788c16bd. 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/DEVF42202645.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x703afd6d3fbabc718f6315e2d47908521c49816bb8745b1ed480165b7a6ca20f. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/DEVF42202570.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cc613c0115d2df1ed5b666a5aad25776ca44ed980e8fb7bc074bb90a40d1ff. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/DEVF42202530.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3970f5f2fdd8115557eb07b72cd2f15624e2fe01c792fa57e41cead77160a12. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/DEVF42202717.