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 0x59a007f03dcf61c1f027e3332fa08a7a22aa60a0ab3c5c6c58515a90bd60c0fd. 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/6606a395-cb99-4b5f-8456-7ca03ee7c66d.json and https://artists.proofprofile.net/proofs/artist/6606a395-cb99-4b5f-8456-7ca03ee7c66d.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 0xb42bfbad30cfc00955811e4244605036252e92df2a706176bfc3cde5f3cbe5c1. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/UKZGC2304711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc9bada439b05ffe916f68a9e0715672b5312a0697c21ea85eca41a2d34ced6. 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/QM3DF2262678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62091332982bd118416eba821babe81a21291ef2c82613cb0dc2a1471ee34054. 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/UKZGC2306177.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c02b293d49ce65af3bc8486bb8406a9ebfe3a80edff97f8d23f970f2dbef92e. 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/QMANG2210567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x871f48ca5cd668a61023351c0fbc5124f23ab4c887c871e91fe2908f121772ae. 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/QMANG2218409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x549896eb292ae77d970eeb10e5d900990d6812c5629f9b2c5ef97ab10bcb903e. 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/UKZGC2309661.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6701b9814e3be7f412cc2d0e940ce31e284dd5e4caa437a3e958532d6d015dda. 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/US3DF2445344.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x590f3fd6d66303f4087b09242b588fd4c46beaaef928ed5ba04d686043708f59. Chain 2 (Bitcoin): anchored in block 958561 (2026-07-18T14:22:01Z), 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/US3DF2469410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6b8ef9be5ff5b6d3cbc865e30b0cf1dfe037eae78ed923ad7be1c51ecc3b7e31. 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/TLVEM2437589.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa3079acdb64dca2bf5516bc62f3b5dec411b6df6efbaadf3f0a70022726f73c4. 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/USANG2444184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78d054e506a28ba397b73d2b3ee08b7284ebdd7e641affa09f2c1669d1c722a9. 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/QT2VB2410660.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc371c353cb2fb66ff3ca6b10c3c2842784a06c8e70bdc9bfd7d184d7e36d5f0c. 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/QT2VB2410662.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26e52c9853fd701b70a216e7ab3c3ad2836e7ab77951da29621b7cb0c473e4c5. 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/QT2VB2410663.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143d61dc194800238279e5d775a571118ce03869bfbd7aef89eb04a2c1053c1b. 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/UKZGC2408843.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x46c841a372c7b8d95cf4fe931e12912a52bf9350f5e39c4e9659edc0ab8ce842. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/UKZGC2411151.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x28f828a95e36482152980c6a057a88a2e8123cb7acefde4b6a3eda804b3cbda5. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US3DF2505377.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54345e224d20fd576a38d81c46e6658a493642cf326bdb3f09d3fca1de2f07d0. 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/GX8LE2533795.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc8e86c6dbd0dcd871c68687745fbf80f5e3ac6487bb50e5a2a1545607cac3aa2. Chain 2 (Bitcoin): anchored in block 957122 (2026-07-08T03:39:04Z), 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/UKZGC2501942.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9faeff64bcfbaa64713cab3653845b9171b04dc973748dcb2118b637a68da7e. 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/USANG2505892.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4578264323736c2ec41a270f87082b1aad524cd45badf35ac17cf727afd18968. Chain 2 (Bitcoin): anchored in block 958633 (2026-07-19T00:54:50Z), 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/USANG2511926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa48b36e4f5579dada46a0161ca3b1018340dc48992a1422d5f5abb34f6e5208c. 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/UKZGC2407336.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb42bfbad30cfc00955811e4244605036252e92df2a706176bfc3cde5f3cbe5c1. 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/UKZGC2304711.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c74f10dfd4b0b1fabb9aa7addbd752aec61bdfb7eca590cca9dcb2299c50c1. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKZGC2305531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54d65aefaa13e20314a90f6df6d1c56ee33178901c665b78aefaaf6decaa7419. 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/USANG2413013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8306338b7739f6c6387ca158f4a7930466923388e7b1e72e9cabc6de20e02a1. 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/UKZGC2303860.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87c74f10dfd4b0b1fabb9aa7addbd752aec61bdfb7eca590cca9dcb2299c50c1. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/UKZGC2305531.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84b9454fb64de4ec37e11151e02db5afeef2ceda5b49839d209871713c5d19af. Chain 2 (Bitcoin): anchored in block 957120 (2026-07-08T03:22:41Z), 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/US3DF2283309.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1c4c6fc382b516002cf0ab0ae4759215808e3fd1ddc40b38a96ea2cb292a342. 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/UKZGC2408342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x50d3023286de3ef57cf940d38aa568e45bb724057ab977a15a51534526f41c9c. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/UKZGC2301532.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x774c8a36732e229c399ea5911b19237859dd580775b672eb623026aeec968d31. 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/UKZGC2404369.
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 0x2c9f2b6d5710f8b86aed28055d5d038cc0c186fc4176a9d8356b701ca029eda8. Chain 2 (Bitcoin): anchored in block 960222 (2026-07-30T07:48:45Z), 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/UKZGC2300469.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e1661c0f2fad2c1aa924e30736dae08e97c4cf7e24f41e6da2e3aa27cb0173. 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/QM3DF2280665.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0dbb9a11c1d38e74204269d1477bd9552915330d80a6a7f7efc16728ced8e671. Chain 2 (Bitcoin): anchored in block 960276 (2026-07-30T16:01:17Z), 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/UKZGC2406946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x056b554939491c6ca31470074ad9bf2fd738040dbe409c0213d7c4df0614bb18. Chain 2 (Bitcoin): anchored in block 960264 (2026-07-30T14:36:16Z), 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/QZN882394961.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eb6546b44ccbe89c773d18bac073ab91fa6265fdd6dd01e2a876153d98d3f0. Chain 2 (Bitcoin): anchored in block 960403 (2026-07-31T13:04:34Z), 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/UKZGC2403606.