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 0x53e8ba1e618c3f6bbb923625784d1244ffe0c5cc76731a0399a2b47dda949762. 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/29904425-911f-43d6-9520-71adbc1d3cec.json and https://artists.proofprofile.net/proofs/artist/29904425-911f-43d6-9520-71adbc1d3cec.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 0xb3c4aa63b51f32e0b5da9ea439d64e7595d808237635b4144b7ba03b10f71f8b. 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/QZHN91952276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf3605e8ff0814d63d1769f4a5288164971c4d5bdf46f6ee37337dc855fc4cd7d. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZHN91952274.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3c4aa63b51f32e0b5da9ea439d64e7595d808237635b4144b7ba03b10f71f8b. 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/QZHN91952276.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e2380ab2bea83f05a9392346921484b1f00323eb32ebae573b8f88b04c8f70. 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/QZHN91952277.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3cd86e116b49c42a1f00f9d90b15e70fb7273851ebb6aace0b202e9a4cac2b31. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/QZFZ72010223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5a55e329843dac369ddf79f02b8c84d25b7dab8174a61ef11c9aace6a84751. Chain 2 (Bitcoin): anchored in block 958300 (2026-07-16T16:14:30Z), 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/QZNWS2119969.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76f5d74fb2eb30504f6e0cd27ec9ffeade1722b379bdc0a7c440224e51b9f113. 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/QZRP42211301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc62ca0528016f6ea1cd1a5f846bf9ce6c9890c7eab8191b0048114960040a51. 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/QZFZ62380939.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97faeb67d468396afe922667a2ea84aa41bfe958c8db0e3743e833c01032e4ac. 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/QZNWS2392133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54b7f8aabc3a6a8f567b8d506690cba91cce05aa4e811725aa4798b7003ce495. Chain 2 (Bitcoin): anchored in block 958462 (2026-07-17T23:17:53Z), 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/QZWFE2396221.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa66d3a0fc7cae4327430465ed3e52b2e69e784c92375441afcd39a7991a9647e. 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/QZWFE2396222.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7a4dbe0b9654e98bdcb2a4814cfb6b2769e806204160814ccfce77d5362c49. Chain 2 (Bitcoin): anchored in block 957625 (2026-07-11T23:15:09Z), 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/QZWFE2396224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4eb83956140c9d663abb2b0bc27d2f19f969c9987e2588a9c6c23d7be9c21096. Chain 2 (Bitcoin): anchored in block 958658 (2026-07-19T04:09:09Z), 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/QZWFE2396225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67d5e1ba6d8d3be383481dc65510a49ff1f4736b7041dd9a4e102d55fe49d45. Chain 2 (Bitcoin): anchored in block 957622 (2026-07-11T22:55:42Z), 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/QZWFE2396226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfba02cf6fae2c2b96582f472d882fd7039050f44c8cc3f963f5ca1890d16cb5. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZWFE2396227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97faeb67d468396afe922667a2ea84aa41bfe958c8db0e3743e833c01032e4ac. 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/QZNWS2392133.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7624ac04d7c072a6bd921383c9d80a66b7cd991bcc3ee7bf2952c829a24e01d2. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:38:42Z), 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/QZWFE2396223.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7a4dbe0b9654e98bdcb2a4814cfb6b2769e806204160814ccfce77d5362c49. Chain 2 (Bitcoin): anchored in block 958746 (2026-07-19T17:58:41Z), 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/QZWFE2396224.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa67d5e1ba6d8d3be383481dc65510a49ff1f4736b7041dd9a4e102d55fe49d45. 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/QZWFE2396226.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfba02cf6fae2c2b96582f472d882fd7039050f44c8cc3f963f5ca1890d16cb5. Chain 2 (Bitcoin): anchored in block 958625 (2026-07-18T23:11:57Z), 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/QZWFE2396227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82b0d8d4c2e8d95f98e903f079576e826316d28ed59afa6fc3db6578c34e6850. 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/QZNWW2451938.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eea426cac6b7190b03dec1a89de956b22906d0fe70836c3b4fb8bfeea43148. Chain 2 (Bitcoin): anchored in block 957576 (2026-07-11T14:19:48Z), 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/QZZ7N2444583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6eea426cac6b7190b03dec1a89de956b22906d0fe70836c3b4fb8bfeea43148. Chain 2 (Bitcoin): anchored in block 958825 (2026-07-20T07:26:50Z), 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/QZZ7N2444583.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94f3a45e4cd7819ebd5885fb7a9bc9803174a7dd047d334b9b68d2bb3d67afa. 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/SE6XY2549407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc94f3a45e4cd7819ebd5885fb7a9bc9803174a7dd047d334b9b68d2bb3d67afa. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-02T16:51:38Z), 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/SE6XY2549407.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa093403f1e1a27ed216504f000d796cc8c13fbd086077f75c233eacf0483da9a. Chain 2 (Bitcoin): anchored in block 957782 (2026-07-13T00:52:48Z), 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/SE6XX2530735.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8d85883b54baf66d3566bc1ab615b5ae6ccf8aa0be2c4a670b5c5b6ee0044d88. Chain 2 (Bitcoin): anchored in block 957776 (2026-07-13T00:05:10Z), 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/SE6XX2530736.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x73843382b38f1a181d75f8b9ef6120da8edaadefe298cdaf16e64a207e517379. 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/SE6XX2530737.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe1f856a3085d8c3521633ed13fe1911346ef6282acc6bc38deeb0b877fabb768. Chain 2 (Bitcoin): anchored in block 958185 (2026-07-15T18:19:04Z), 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/SE6XX2530738.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x528317a9b2b117cdfb31f3888131178bf4b2305ff23e8914cc6b4c541c793791. 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/SE6XX2530739.