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 0x4f46c27cec12033348fd7ee74d6214ceb27bb85f073d8e3279070dc458669d58. 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/8eacb6ab-7ab0-4d36-8b46-4825b52f954e.json and https://artists.proofprofile.net/proofs/artist/8eacb6ab-7ab0-4d36-8b46-4825b52f954e.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 0x7e6b1e668b9f2793b3677bf0529bec1fbba455aac722d436dfef7b7411abc66f. 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/DEZN82454537.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfebe5ddf9763fbcb9770aebbb7c7349eb6191e511c01778693e76a3701d989d. Chain 2 (Bitcoin): anchored in block 957761 (2026-07-12T21:55:15Z), 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/DEZN82454541.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x11c2edc967e2823e0041ae23927335fb0c2de1a25cf0a510219e42f15ede3c19. Chain 2 (Bitcoin): anchored in block 958111 (2026-07-15T06:58:20Z), 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/DEZN82454493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x17793edef1202d44ad6470eff64b5e12b615494e4a5e4baf015f9ece80ee75a1. 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/DEZN82454535.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb909bdf5afe86dc07d146448ee7a946a6cab97eb6365d83389251ac1cec2222e. 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/DEZN82454533.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d4fb5965f0adf4f6ec2fb01e9d5c4ffcd20cebd6cfbdfe57acbc7252098bf40. Chain 2 (Bitcoin): anchored in block 957759 (2026-07-12T21:46:51Z), 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/DEZN82454534.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6e94190ec7a2825cea2d0e657c0700343128feafcc8cc67b95f1ab5caa9f6f. 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/DEZN82454508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda067668469c38b5bfcf5aa94e8ea2c99c3dd1e1b1ff1e789656a5955d6717f0. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/DEZN82454504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca7bceb41985fee106c816fb0a0694da491a4ac22ec03f46c8ffcd6f17ba5821. Chain 2 (Bitcoin): anchored in block 958951 (2026-07-21T04:57:24Z), 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/DEZN82454494.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xca2c26e3f501255d4fddc98717bd14aff199c8209c4c44e214d62d6cd731147f. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T18:51:22Z), 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/DEZN82454637.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97774047e90cb8f0aafefea352cadcd965345119a6ad0ce1bbe32cd1f4d4721c. Chain 2 (Bitcoin): anchored in block 958146 (2026-07-15T10:33:22Z), 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/DEZN82454505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9177cfe5464121895bc02641dc6a4d9f6ceeac9756f6c3e74ac7b5f37783da9. Chain 2 (Bitcoin): anchored in block 958955 (2026-07-21T03:03:40Z), 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/DEZN82454507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b434291112a6eb2e959138818c654a0ffdeaf1849da2063d0fe8cc8d89a59f9. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T02:34:00Z), 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/DEZN82454540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5cddd530f4d74f51394281799a955dfbe3ddcb5825031e35c0089db9f4099ea9. Chain 2 (Bitcoin): anchored in block 958169 (2026-07-15T16:16:18Z), 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/DEZN82454641.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94dbcd287d2e1ce8868ea4b9425636cbba1b029653dda2b0f420e87c1b1be3f8. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/DEZN82454532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa8d81440b66d3739fe13584fc20a6980f438f505be354718c139d399fbddcc2d. 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/DEZN82454536.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0a6141a67d9c6214ce7faaeedb9bddbefd760b6873327e31e17f2a69865aa54e. Chain 2 (Bitcoin): anchored in block 958544 (2026-07-18T12:14:37Z), 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/DEZN82454499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x99c66dceee3e0414b3766feade0109c40993184519067f8667540ff758c8a90e. Chain 2 (Bitcoin): anchored in block 958461 (2026-07-17T23:18:11Z), 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/DEZN82454496.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xefa015105fdb7bfe5de3c7fb15bc8ec959d23c717f47edb7f7cfe1b1cf7ae3c9. 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/DEZN82454498.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x003c25c9af28befc91d8de5dfd9dbb2671173e947ed8e2c01e28cbd51f069ea9. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/DEZN82454492.