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 0xccbfbab50462528eab208b338c0f50aefaa892d5e1439fa07874ddffa05c4315. 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/2fa0ada3-7083-4c6a-a7e1-250c1c798794.json and https://artists.proofprofile.net/proofs/artist/2fa0ada3-7083-4c6a-a7e1-250c1c798794.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 0x3c5e8f2deb9bc834440898790fbcd69bf4cc470aeb6a59878861c0c6b197be29. 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/QZGLS2417078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96bb480979f703865c5a06dc2f4053601ba49a888388fa7f4ca314a6eb73640d. Chain 2 (Bitcoin): anchored in block 958716 (2026-07-19T10:15:55Z), 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/QZGLS2417079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x323c06060ecf323b8935995deefd943852b02bf2ca44e446dcc2ef567246c425. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/QZGLS2417081.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4833bf944d11fcd6daf73b696895930296c23a343c178a106c8180ae668c2984. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZGLS2417085.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7307b1df346bb66d41e4cdc834fb7266adfbdb16952aabdbe2b7a5edb4d7aaff. Chain 2 (Bitcoin): anchored in block 958908 (2026-07-20T18:10:39Z), 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/QZMZ92469142.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2f2d1c6aea1c5dbf1fcc713ffcbd130e7371197a218cf6096a5a3488f1bbb155. 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/QZNJZ2440327.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c1cf3856077994308d52cecfabfcd9c073e7b552606d5032756f161f16e1791. Chain 2 (Bitcoin): anchored in block 957833 (2026-07-13T09:36:32Z), 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/QZNJZ2440328.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x784f865b6e723232f7e2755dbfd6a54b199e9e73f582938814045223f90fcde2. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/QZNJZ2440329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1dec4d3dd5e4e16c3e898f74c68bd6ec2bb97132a305097e342d449e55f966af. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T17:49:32Z), 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/QZNJZ2440331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9ef787df2ac762d2565c8f3ab3d7361bdfeb77488fc44d2af060e9fd8071eb57. Chain 2 (Bitcoin): anchored in block 958104 (2026-07-15T05:34:05Z), 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/QZNJZ2440332.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x451b83b5e5170864a7ea6c7e09d0176dd5b61626dfe73e935abd91d4f52f574f. 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/QZW9M2425024.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb572e4a6f4f592bd693d5ca7a3eb1b1bbfbb9a0373fba485fa754c5f4ca0a170. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/US7VG2580182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb938d451bd40e4c38be0fa421b7bb11b1b3f52cfed1419f6a1fe43b42814f36a. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZMZ92543781.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe6d2fb7bda9967cdf8976c349f2ff35afb3ce68299e8f11d32e2523c4a862b0. 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/QZNJW2592198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfb77b93cc19fbab925730ba7792a39eba25c7ba9c931801adbc83b6cef839872. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T08:24:54Z), 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/QZNJY2511557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa6322d82c9c9f4bce9a055c8cfce81189f200939f3b3dc30598393443ed022bb. 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/QZNJY2554283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7fb8b917a47e1d98d98ad3159734d9e9e239c98380d12aed5d8a6f37ed5717a. Chain 2 (Bitcoin): anchored in block 958860 (2026-07-20T09:58:28Z), 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/QZNJZ2583655.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb01a61b20f711f95a113c9c322a3710009cf3778212d3955dc7f80829c8c2b2b. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZNJZ2583653.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa948c082650191418eec9af6ee2c996fb2971d9169fbe930f25b4c3219c664ca. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/QZTVM2533701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2af4127e8bf8a907a5ba9e4d4aec3f97e4173ce3f7d0feefd5861327e24830. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/QZTVM2533702.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96627df3c7c1941ce90213b5383cbab30f0b5ac0072545ba01dfe39fe8759a71. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZTVM2533703.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf70c23e308f4f982e59d120dcb4842a42baa266cf11923c66c723cf256ddf37c. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T22:02:10Z), 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/QZW9K2515779.