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 0x13207476b561ac7f0fd8b25bfbf0bd57b4f0b9fc1768dba08247b9bc9bf84241. 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/4e45d554-d1a3-4c32-8d6b-faa76351f333.json and https://artists.proofprofile.net/proofs/artist/4e45d554-d1a3-4c32-8d6b-faa76351f333.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 0xa5123402412c4e99fb181b347cbe777fd14b96306454372e624a89e91bb1bd79. 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/QM4DW1770182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfd2ee2274cd70a1e553150d2847887899fb7d0ba51a8ebcbc1c15112da907b4. 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/QM4DW1770185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ef63d5e0328b1adda6a4e31aec7fee9c5c5deddd5bb0c073e80b61b69a6a769. 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/QM4DW1770186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb128b2990e0933b6a583911933ef5dc8d3012c03caa8faa4bc6b966d8fc6dfe. Chain 2 (Bitcoin): anchored in block 958554 (2026-07-18T13:17:01Z), 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/QM4DW1770188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9070a788da4a56ee475171c95adb87c585327c75ae8ec38f48b6e78c426a27b7. Chain 2 (Bitcoin): anchored in block 958676 (2026-07-19T05:43:13Z), 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/QM4DW1770189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0863e63a46d2dcc2babf7aebbe9bd9f67dc9aeac3cc7c04d3a25de0b0e89f4b6. Chain 2 (Bitcoin): anchored in block 958212 (2026-07-16T00:36:37Z), 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/QM4DW1770190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x754fa8cc9bee04de087d300475f76bd20c6bd5c2714df2f023bc5ee5279677d4. 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/QM4DW1770193.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da1e23f80a27edbb5e0d62f44dfefaedd02deac51713cb455dea5afbe680b59. 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/QM4DW1770194.
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Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc4f29d096574a99e0069af7d71f9c1a024521777bc868f43084f19b99cd14706. 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/QM4DW1770195.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe33355f972c256afe0d142a820051dc7344498d9be5e793084262d4a487e7749. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/QM4DW1770196.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46fa6ce7cd7ad6652dd3e322e54ac802accba702037011c4de51958067881cd8. Chain 2 (Bitcoin): anchored in block 958547 (2026-07-18T12:44:05Z), 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/QZ8LD1747649.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa80f4333ecd6258e745f6e61db50e0e4d6421c595a7cc548f1856ea438f35d83. Chain 2 (Bitcoin): anchored in block 958666 (2026-07-19T05:00:30Z), 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/QZ8LD1747650.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce32497cd38412b336758480276347d4aed1206e723e7d4787250411aeab3cd3. 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/QZ8LD1747651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7db959dcdf08ec20804f94a466c4039046e478b8b3977a7fe9b7cd06f12cb240. 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/UST8K1860830.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe91183b963bda3603e533cdab9b9dedd5546b3277fbc1ef3b5060b963a29893d. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:43:22Z), 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/UST8K1860833.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe826f5f9a90b8111293b8e267af6a7a9d1dd94e6e2a73085e9f941b173df0547. 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/UST8K1860834.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ff6495ba244e3e74c19c49e1afd231f4597cccbb8db45d4c193ff8e0fe810c5. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T15:29:46Z), 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/QZDA42148882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad159c7706a165d54c1c0741bc393276b5e22cc86c52437df64808bf827c59cf. Chain 2 (Bitcoin): anchored in block 958063 (2026-07-14T21:07:34Z), 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/QZDA42148884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17439de558698196a7220ca4b9d4849af3eb6f5dad674abc540b163c3f8bf1ac. Chain 2 (Bitcoin): anchored in block 958771 (2026-07-19T21:22:39Z), 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/QZDA42148886.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf800a0f8d2cb54d986ecefc9346e1663df981d0bce1428542a457231c3880010. Chain 2 (Bitcoin): anchored in block 957647 (2026-07-12T03:57:41Z), 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/QZFYX2246260.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x498ae85324383f7ce511097ed9ba7cc7584fa84b7f8e2ed04340d0e46c19f52a. Chain 2 (Bitcoin): anchored in block 957650 (2026-07-12T04:18:57Z), 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/QZFYX2246263.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0efaac2bfd8c7b6b3fbc1fca74cdb8e3b7591360d8666d1ded273ac82a1b87b. 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/QZTAW2261871.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x86fd88384bd413abd17a5836c9fd2e483a887ffb1b91c0b4052c492e5cc70e70. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T22:07:40Z), 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/QZTAW2261873.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ed6cdb1569a98b4c24b2c5451ceea3ad30560b9b79c10838fbfd0134502785. 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/QZTAW2261875.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x58829186ea699d7ab54990022ae463732ce11e53b9f26c4a5ce581dda5d1cd4d. Chain 2 (Bitcoin): anchored in block 958667 (2026-07-19T05:04:54Z), 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/QZTAW2261877.