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 0x562d5d64ceb3df46841976656928a74f6a89b5eafab369ac9ed0508e3ffe43e8. Chain 2 (Bitcoin): anchored in block 954346 (2026-06-19T03:51:26Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/97b15f14-d70a-4b51-a7bc-e875a786d4eb.json and https://artists.proofprofile.net/proofs/artist/97b15f14-d70a-4b51-a7bc-e875a786d4eb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Nothing But... Hard Dance Essentials, Vol. 12
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 0x3479121d9fbdbb57fa821e9675b4b4d101e7a302e91f21be61fc2f41002431f9. 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/NLS161802555.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e58b7b3d5a5ae7c4a0c2530651def96c3267f3ff8713ce8fa8f2b5194149833. Chain 2 (Bitcoin): anchored in block 957039 (2026-07-21T17:14:07Z), 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/NLS161802876.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cbd9677fc906f77449cf67066444f1df1db59c3c83835678fdefa4d700c0192. 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/DEAR42492124.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26cf09411d7267c0db2e64264fcea10dc204befbf2931485ac0d3d10fd051773. 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/GBKQU2377254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f50f51b830bc137fdfb4a81bfba51b295940eac6941fa70010783c84a26243. 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/NLHR52149912.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfbb07962d17e39ffcc41a1ee6784ffbbbda4360ce5d5810d1380e19bd2bcbdcc. 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/NLLB82400127.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1d650bc5b149272907a5c2d2f3c57758bcbda35b62a3ced89c576c8f26efa7b. 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/NLLB82500011.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x84fa2fb9f1be867d1f87ea866d39c8289bb290856c87f140885b45034720f28d. 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/NLLB82500015.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbac2920536d4369a5ee291ce8ef5fd634c62ad749467d8c79618bf6ccf10c766. 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/NLLB82500020.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5635e4a2da0f7ebda2a5d841fee1a5227279921588720bd0f446a17b44d67c86. 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/NLS202300172.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x26ee406e1a6d462242ac89886d9a6e6f28c0e23b4f02009a5d9f865b8fc855dc. 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/NLS202300203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7fc9b3c98e626a18d3dcb25e564273ba687e3919dc987cad3e70cf95d7568627. 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/NLS202300239.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd4a9e80bd7ebf8c2e301edbf7bd8b2513de096d6e3137e38d76f5543389e7bf5. 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/NLS202300242.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23e0aa2c36e32667450e7aa6097d93548e17f17f4367660d7517c6f012eefe6e. 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/NLS202300192.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa2731bd6d78bbb0b5787408ffb8d3a83b8c70e6f10518aedc61c1b2b8947c833. 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/NLS202300217.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecc456dc8c681230d706e0cabf59c39a89a3889edc100b1c7e53ec7703c95343. 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/NLS202300186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a1cea517f0b581f2bf1815ebd32a4abdc4bd25ace89d0a2758b1f9dee3f520d. 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/NLS202300184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7de572b5a97ba04c4a1317d502118905bc3b588e113b9f3b9763da07af3123e9. 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/NLS202300160.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x435e0661a911756f1c128291ae3f15486bb227b68647dda02c0e063fe25518fa. 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/NLS202300194.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba9ded6cc000093bd67f4f4d39e6ee78c716cd271e981f25a17c8528541eafb2. 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/NLS202300129.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6acf133bb2b12e182451ed429fdd3a976ab00f28069d8717d6ed7818f1d3641. 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/NLS202300146.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xae2fea88910eff5bdd66d712f371a62e768b24869fde7c489eec876f66d05034. 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/NLS202300453.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1898ed039c997492ab03c4fbff21fea93550c47c3e1839dffedbe90f42ea21a. 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/NLS202300454.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda0b3ac2d2584d44bc38e38d31ad21bd9588b6f6cab00ee4ae1ab556cb631e90. 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/GBLV62206588.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ee190e6ce4b1a5165c82d240c4aeb6ab518093c2d57b4014cdf0196da0a2f1e. 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/SE6SA2411656.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0b331a65c306fd0e073f56dc2ead4b5f863dfb6dd01b4fb26b145baa80bc704. Chain 2 (Bitcoin): anchored in block 960494 (2026-08-01T01:44:32Z), 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/SE6SA2411659.
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 0x974aa08f2d6cbf6fb2678fdd282e326e37cdb024840ac1137de2c0f9a1abf6c8. 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/GBKQU2337719.