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 0x8af87a63fd457754ca26588507a7d8aa4ab9e4740d2e1fa2b4ca5675b1359cc4. 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/c7db8e55-745a-44d9-bee2-e57a5c3b4e50.json and https://artists.proofprofile.net/proofs/artist/c7db8e55-745a-44d9-bee2-e57a5c3b4e50.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Best Collection, Vol. 1 (8D Audio Version)
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 0xc2e6feb7c2c9ee0db1fe8639bf044ced392a14e334b722805a244f0a61c995c2. Chain 2 (Bitcoin): anchored in block 958697 (2026-07-19T07:58:24Z), 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/ITP9L2100390.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0bee9bf4ca288b54a89984e4355299fefd947deae61a05f490d91c3db9a7720b. 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/ITDXG2211601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45fae42e2cdcd57b354e26f323ca3627307d48e7c32038fc431240b5836a19c5. Chain 2 (Bitcoin): anchored in block 958700 (2026-07-19T08:09:50Z), 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/ITDXG2211701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdec35a31f0371500b10b107633752c6a668ec81bf92fe1600d28ccc69d659435. 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/ITDXG2212101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2c9baa8f1a44334c5c96f80859273dafedcc47cc2d58279a52d918f515f0713f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG2212201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x74ac8647c49cd84b2c5f07c3ea4ca3b629059ba2dfb845b2022419fa0a5d331b. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG2212301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc177cd842e974a23d60323068926dfb494690d190505d190b16513d08a67906c. 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/ITDXG2212401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe01d80bf5be7340d1e5d662d9427900a69925486880f5c57948c7d6c59438edf. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:50:53Z), 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/ITDXG2212501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf2d78b5dcb65b2a716a2a063a2c84de03488b5e3ed47f516196eb1fe8eabc3ea. Chain 2 (Bitcoin): anchored in block 958686 (2026-07-19T06:43:29Z), 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/ITDXG2212601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45f1742d44cecb4f8723546eb131755ac00133eee62d55e7e0db4e2e984dce80. 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/ITDXG2212801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77a331f5270cc4cdce1a7805aea0732c1d1edae471fcf943736e7575f6e33065. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG2212901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x60db5e692ca93f4fc2bc585e69a56229b7122370e8d18aa75fc168d167923988. 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/ITDXG2213001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6913f1cdebcdeaffb2fec16501270fb7efbc51c43f726ba2893f0be86f2620b2. Chain 2 (Bitcoin): anchored in block 959071 (2026-07-22T01:01:42Z), 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/ITDXG2213201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x94254e2da4e461be085c8aede2dfdc3dcd75de0a08be0e2ff71fac5d93de637c. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ITDXG2213301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ddd05cb867df35893c37334467fc096b699214af0f863a9871e9b1f3497bf94. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ITDXG2218101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad059baaa8d9688ca76850e9de9bfd5343f693bedf0ba418d82b600e62e5154e. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/ITDXG2218401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccef8790d35a871722bbd44e5bfa4c4114f41f6898f1a9229834367f1884708f. Chain 2 (Bitcoin): anchored in block 959096 (2026-07-22T06:44:57Z), 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/ITDXG2218501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85b902026f48b24e640b445f867d019fc5c08e5437829db398ce505ff066e5d6. Chain 2 (Bitcoin): anchored in block 959084 (2026-07-22T00:50:00Z), 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/ITDXG2218901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x289e2494bab71b6e442b153fb92a2d836b84323f909d47993dcea8e029df7178. 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/ITDXG2219001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd33b3ee66208dd96bc362422b9c25e74ebaf78e669d97cb25de9fe480b71441f. Chain 2 (Bitcoin): anchored in block 959047 (2026-07-21T19:17:28Z), 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/ITDXG2219101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x198107be82755731cc9f82a228d2a06a37b83ef0b9d2b6966c3b09f180327f5f. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG2219201.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6a08f859ff035d24ea073aec96decb043322cf6da728850b445e0e380941173. Chain 2 (Bitcoin): anchored in block 956857 (2026-07-06T01:26:17Z), 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/ITDXG2219401.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f51cb3a32b35f83e7aee380be6c8434f72bc9af29b8161e58a0b50c7699d910. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/ITDXG2219501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87018ddd3236ed890de8029fa1acdcf6c3f23ab33947c87c8e73f6e13c09e662. Chain 2 (Bitcoin): anchored in block 958931 (2026-07-20T21:15:01Z), 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/ITDXG2219601.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5d76c14fd1a9a60fd6ffee59d5c74739322b58cc87696bebf60d048ae01b3f4. Chain 2 (Bitcoin): anchored in block 958690 (2026-07-19T07:14:39Z), 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/ITDXG2219701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4173b9d49c678c468092634249b3267d2c2d5f2d1b6add05ccedda7929443f91. Chain 2 (Bitcoin): anchored in block 958975 (2026-07-21T06:12:52Z), 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/ITDXG2219801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x074cc5aa529961c197390131c89adffe430093d53577bbed2572e38f2cdc4e1a. Chain 2 (Bitcoin): anchored in block 958673 (2026-07-19T05:38:28Z), 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/ITDXG2219901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcfff6c5e68e811440712dbcecb1a2b3301c5989c0b293fa7326354f911ccd25a. 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/ITDXG1904301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0865611e3235562751046d6393d2f5c1af59ebc4495e8fa7f4570f0a1ca60b48. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ITDXG1904701.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x90fd75711f39218cde8405cff4ce9c3cd13cb62c0dc40cb6434b76b301f3079d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/ITDXG1904901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf1c890b5cdefc25ca642430cb9186bd9144dd94e673e5747485b20c9a80d3ed8. Chain 2 (Bitcoin): anchored in block 958067 (2026-07-14T21:26:15Z), 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/ITDXG1905101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7806d9fa410968fd87b9abf382f589546001125dfe9fc3b913285921db611835. Chain 2 (Bitcoin): anchored in block 958246 (2026-07-16T05:55:09Z), 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/ITDXG1905301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6f28c1d96408b3e2831df94e9ef3f8d5ada5400f84302070d49f8dd54f1fc220. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/ITDXG1905801.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc84208d566dc7d184135374a237f5ee9ebc7d775eeea8d0ceeb6d06ffa9a949e. Chain 2 (Bitcoin): anchored in block 959080 (2026-07-22T02:47:27Z), 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/ITDXG1906001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5b8a4178857f3f9be902769311eb89a967fae6e10a6df1b84456c4b55f39e00e. Chain 2 (Bitcoin): anchored in block 958601 (2026-07-18T19:27:02Z), 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/ITDXG1906101.