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 0xba9484211f22a5348543114adfd9f89c09fb1233f9d763c4cc3d91aa85946262. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/4b3aee3b-7561-4afd-a7f7-4530af03b8d4.json and https://artists.proofprofile.net/proofs/artist/4b3aee3b-7561-4afd-a7f7-4530af03b8d4.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 0x82d62468531505b0f66280f6ce640042639b153bdca24d0f68a6ef2595ea9a40. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES64E2482515.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77e4e7f79f64627f3f7b1ebe5a7d1c04ca1417169e930ad966b7fdf0200bbf5c. 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/USDY42219890.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfa5e174fb6ffae6df9bbe5d0efdcf12366b452725de27537ccb899c43b374e4c. 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/ES64E2488351.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1659f9f1c13bb10bb2c385d8792061a674cb5de4098c75c02b542bbaf4693484. 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/ES64E2484653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x600295193d9b8841e21f78369aca73b571625170f69b505cbc1b552ed05c972a. 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/QZMZ92427807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd00c109b05cbf186bd77ab27e9387bcb604b2af7775692f74d44770999913749. 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/ES64E2472883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x901bbff00c387785fdcc481935f7dfed60205a00adfe33a8b5c535e702736b39. 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/QZQAY2413068.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb3d6a6ed3afe957620588f725585d9298eb6b5720ade87458d9739522c1439d. 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/ES64E2466488.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xab6577e2a1e197abbef01148c9a468853ab7bddcc2e96e6092a1ee90a2f8f981. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/ES64E2464192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ef9f134faa1487bbe00e96f4b84de8acee1f12384c21b40b20ccbc38e985ed. 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/ES64E2461390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x24825ce9584fb0dc912ad5fb47d981f66fc2659d8ff0e3afe7882dbc2135020c. 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/ES64E2454733.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d799d311920ec0c89f0423eaef04e740f287f98a50b8f1fd022cc703296b784. 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/ES64E2326314.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x02cea257b1d2ca16288b66f3c55962657e7684974217fff01a6611fcdcb493d2. 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/ES64E2318735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd767524256e1563486247a7ad70f62b35ce549e580560fa5b8bcb100d8a876e6. 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/ES64E2307119.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0a89605b5565e9e5c86a801b5d56059339a68775ced95bb53d729474d9035f4. 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/USLZJ2353358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97569bdcb434fc2cc23742c9aeebc69974b48c7056842efe2b09fc9bd3455025. 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/ES64E2415014.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6e20c07535383fb094f97f5a9769ee5322d33af22e6944c4a7c28ad8576ca4cf. 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/ES64E2409252.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc41a4efebaebfbea0bde7e2f076f58ded039c9417323249ae366df34265e7399. 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/ES64E2499417.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x057052ed8437699f84e7a5d50edfe02f72b458d62eca827dc2011e94ba95f8e5. Chain 2 (Bitcoin): anchored in block 957026 (2026-07-07T11:02:43Z), 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/ES64E2499415.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbd6fb3da6a1ae6cf835123adf65456742a060846b913cdfc4de89cc3830d4d78. 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/ES64E2415035.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae28b6c489ea9a2f856023cdfe4c810ad81463873ad2177f46fc8f717790c3b2. 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/ES64E2415040.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aa11786b59afa7438f9516b46249be77d346f8d56ade8862f9cec993ddff751. 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/ES64E2415016.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0c3974908ab2632d142a95803d06c71a1aec8637246a16e510d3b0d2ad5f813d. 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/ES64E2405055.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2bb255238813616ae937e27f37eec93f2d2db3092454f3a2885e443833df28c4. 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/ES64E2499419.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c5677466b67ee57078b1b36442033e17e70bb8396cd6b16cfcdbba5ecd9b568. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/ES64E2509281.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8a0559dd0ca357afb2a8fa27f1de6ba79ff80bc3a34cc434817c73c8d61bf9b5. 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/ES64E2507732.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb0ac469091c65a06c12ec780c45cfe1cf17717c4cfd8e910013dcb829505f0c. 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/QZS7J2598215.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7841168e91bd3bf7881e5b4d6fa7c2662e3be560de78993dbd6d4dd2c83ef6a. 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/ES64E2415021.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c63716e23859d4cc8f5ab91aacbff793108b79383f66a73fb453dad603c2b6c. 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/ES64E2415022.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x32f9abc8dedee2a3711ad61ad812bd78c3e1bb5ed13e32189174caf781be539f. 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/ES64E2503313.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7804eb87a63dbb7bd989779443077564ac5482d2014c075e84b2c2baf3c177e. 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/ES64E2503312.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9efd106826b0d85ef5cf136b79fbf7900d886003da4b37b8c70aafb95da4caf5. 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/ES64E2415037.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c3ed23756364d7854ef4d0268635cc9a86def311d4856f689fdc49820790f67. 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/ES64E2503033.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb688d933b557948a084ec863e58eef4ac779746064b3463e6f728ff126fa0443. 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/ES64E2503030.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9ac8312db9ed05f4ac9ae759ffb9e0e61430ba5021a3e1e10acf6635aa372d7. 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/ES64E2414606.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9cc4d785edf7ed52d6f2e02c522d1bf0a0412293882eb94b998f25edb3fcb13b. 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/ES64E2400255.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe7445f50e6c50dbcc132c44c19e622216525b87a1032c35ba073ee98027b63de. 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/USHM22253531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84ee71b3f5cb2de9175f9c778bbdbc385d149ca1c0538b4bb3e4f7818b84194c. 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/QZSYP2439579.