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 0x208fd302834373f0c286b7e764f09353b3238837a67aa8abc0f0636309bd7c5c. Chain 2 (Bitcoin): anchored in block 953423 (2026-06-12T21:20:00Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/adc2a461-9fb0-4560-be9d-3f0e314eab84.json and https://artists.proofprofile.net/proofs/artist/adc2a461-9fb0-4560-be9d-3f0e314eab84.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 0x55cf0ecde9f8ec7291205c251d3ceb3cf4425f7a44c96e30fbe0dc1634edea73. 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/QZK6N2339964.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa037111306ecebd87e58b3939f532bc2c989e4f7f39e27bd2a97d09d52c0449c. 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/QZK6N2339969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d7fc635e5dbeb450d934ad5da18b5da7e3838025ec01cc0138f24780a81d79. 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/QZHN92114969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb370a31f985f21e4bda9b641e952a28116a318138f88f83c1fb5af633c54105. 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/QZHN92114970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa44cff164b962d22a8307e411a2a42478faa80014368c6762395f0e692ba3f48. 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/QZHN92114971.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fe1d96ad96b3ff838c9b1bb5d313e52553a2e81e7306eb2ebe1836e580d30d. 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/QZHN92114973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b1400831245eeb83e113a64e0d535999afa65c7f109c60d00f2a759b9fec20. 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/QZHN92114975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ac0be1d09defe90c983ac1adc42c96a68ccc4d4c37ecaa65efc4ce3ac7514b. 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/QZHN92114978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431a12d9e3d2ada123b12f3d0dff12aa7bf0748f6a368ba1521dff8bb3104fc7. 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/QZHN92114985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0edf96c3de5a4cc4218de9185205c3af4c2e28be678c35830d016631adbe4171. 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/QZ93L2102691.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x49d7fc635e5dbeb450d934ad5da18b5da7e3838025ec01cc0138f24780a81d79. Chain 2 (Bitcoin): anchored in block 956891 (2026-07-06T07:16:32Z), 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/QZHN92114969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb370a31f985f21e4bda9b641e952a28116a318138f88f83c1fb5af633c54105. 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/QZHN92114970.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93fe1d96ad96b3ff838c9b1bb5d313e52553a2e81e7306eb2ebe1836e580d30d. 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/QZHN92114973.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa1b1400831245eeb83e113a64e0d535999afa65c7f109c60d00f2a759b9fec20. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZHN92114975.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2ac0be1d09defe90c983ac1adc42c96a68ccc4d4c37ecaa65efc4ce3ac7514b. 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/QZHN92114978.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b6f94a65cabbca8d1cf36149b7c1e107941b4be4a1ceab2925e70913448d274. 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/QZHN92114981.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x431a12d9e3d2ada123b12f3d0dff12aa7bf0748f6a368ba1521dff8bb3104fc7. 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/QZHN92114985.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1f09cff3fc2672183dcd094cc47b8d17a4dcb1990f99bb89eb16acf67690237. 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/QZHN62086690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe558cce4074683873a460a78377715c25908637acd3eeac04c3f1dd91708fb48. Chain 2 (Bitcoin): anchored in block 957032 (2026-07-07T11:43:09Z), 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/QZHN62086693.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbe358eff112fd9c61e0e610eac15a7b00369093f4060ae2a54a5d85e9efbf51. 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/QZHN62086695.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x519b9b7b08e334bb2ae7a224c5edfb788a56e343a21d7ea029b4804801a98f22. 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/USUM71820418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c8463d55b3b023c2e51193c26b4ccf248ff3e6ed4733bbf504a7c132dd129f3. 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/USUM71818174.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdbf48cf38b873b238ff3823ec17475f9545814a2c966ed208aba153b79639ba8. Chain 2 (Bitcoin): anchored in block 957064 (2026-07-07T16:43:08Z), 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/USUM71820422.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb98333b0f4cd27056a45ffc0c77a6faeaae63c0bb102b6ba87833c408d63da0. 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/USUM71820426.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3efaafdec8b037c9f8eb415851fea08ece2ac2e636c1156e818c563a6f624bf1. 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/QZWFN2321884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e887ab3792cb75d421bf25de04fbc1fae3046980aad02ab1bdd878c947026c3. 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/QZWFH2334966.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x71a965be776f1caaf47d0bb0ad6d3d73ceaafcac31b451b9027d8ef0a554ab73. 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/QZTAX2384916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb30130673c2c3823b47e6e7d1f58f71f0f74dc56366aea5d70c21d4f9b910a2e. 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/QZTAX2384917.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0ea7de92c5c13dfe2e1f848bed10a22314efb46e6893af83b1af4f1772a990f1. 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/QZMEN2301106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f6524851678acdba11cbe66af3d1980e51b4e96e773ac23938d943e7e3e2f40. 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/QZHN82313208.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf7c2886a2b26c76d1cdfc53ae900a8fae917ea4d098d9ab9b288046ed6389e84. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZTB52249212.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93cda53321a70ca41448f461f8f00d4894e720f627ab66df2d1f1a249947b81f. Chain 2 (Bitcoin): anchored in block 956312 (2026-07-02T05:09:12Z), 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/QZNJV2182247.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x51bd45e70d2ae6b4ad570067342a1ddddd2f54bd1a6a3e05c04f3eb2a80c283d. 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/GBSMU9492734.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x62376160450dad99fa75216962d4436d36a76d0a1e125f05a207bc2f9fe1f644. 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/GBSMU9492736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66249596bfd1044e82cdb938af0c7520b92883913a5085ede6e59afc11a56ca7. 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/QZN882079251.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe36bc96702ac74b576aa118cc4300fbceea01431a4da6cf6c66e0613d43dabdd. 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/QZES62099635.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64a8dfec8e8f3d1e8e2824afeba0ab14757348ff6e724cc7591028d93ac9c3fc. 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/USUM71914540.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x763eee24cb6d88b12de620d53ab66969939bb95077b03fc8397b78d694090151. 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/QMEU31905407.