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 0x45a2d30c042fa67a66bad3d1d4ec2bae4893b1749066663b0e0250f660effc44. 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/ced1062a-5f4c-4f2a-9e1c-e40f8316cc06.json and https://artists.proofprofile.net/proofs/artist/ced1062a-5f4c-4f2a-9e1c-e40f8316cc06.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 0x5a8e073fa360524ebe3e932cfae828389b9b6ab7c39c65ca69e05fe56eac67ef. Chain 2 (Bitcoin): anchored in block 958474 (2026-07-18T00:59:09Z), 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/SKG081400104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2eb33eb8e1ada7284398b5fd40d2bd2f32d01d0c85f5ee14ea41b06c2cb37657. Chain 2 (Bitcoin): anchored in block 958842 (2026-07-20T09:57:41Z), 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/SKG081400105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3e11536e980678d33602b269174d5303e45ea402db96a0389ef0ae4523ce24d1. Chain 2 (Bitcoin): anchored in block 956790 (2026-07-05T12:31:54Z), 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/SKG081400106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f120fc3a07a86610477628fafc763fe539dc31550ab6eac2bc6914c6bbdab9. Chain 2 (Bitcoin): anchored in block 958596 (2026-07-18T18:42:38Z), 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/SKG081400107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x81e2c3fa044d5feb8fed9f17e231e52ab4ea6fffba9a2b298068e107dd8d91be. Chain 2 (Bitcoin): anchored in block 958839 (2026-07-20T07:01:59Z), 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/SKG081400108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5581d27267a23bb13eeeec4c16cd059ca50424b78789d12ed6a63d7c6a02d13a. Chain 2 (Bitcoin): anchored in block 956576 (2026-07-04T02:06:47Z), 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/SKG081400110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf64626a6fe25730a94a49853221482e719b4eb5acfcfc00662aa38aac2d3db82. 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/SKG081609101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x82bfacd3a8abe6cc0ae660c3ff18939e76a7602ac4251633c30b704940b69cdb. Chain 2 (Bitcoin): anchored in block 958383 (2026-07-17T08:20:01Z), 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/SKG081609104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed9c7eec50f0f16e0f39960ecb155a07d484255758c329a69565e71b1995ed56. Chain 2 (Bitcoin): anchored in block 958157 (2026-07-15T13:14:32Z), 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/SKG081607101.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x734f3a7d42e10dfca1470b4e1de431c9c42035a59bc06a1a3bd08f50cd85cb6e. 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/SKG081609105.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76802bda466e09cb51a1460c72b5eef5053e8cb1bf5235a090cdbb9fb625c272. Chain 2 (Bitcoin): anchored in block 956738 (2026-07-05T04:47:21Z), 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/SKG081609110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe4bd81630835e200308a6c720a99bb46c9bbfddab51487ca8c04a6c8fad096b. 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/TCADO1883946.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf3a981d5b9b3f0a10082f4ac5417eecd1656cbd0d69637f6cdf8a14bbba6ab. Chain 2 (Bitcoin): anchored in block 958447 (2026-07-17T19:47:19Z), 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/TCADO1884007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdeb9af03285e9ef46d7ebfaf882992c8f86d92193797285143e135c66a34e5d6. Chain 2 (Bitcoin): anchored in block 956639 (2026-07-04T11:19:20Z), 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/SKU021800503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa11caf494670f69bb5c588b1e57d1fdfdd341bbe12b676d54f30bb0e3e52e446. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SKU021800506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6cce1b29e1568d451086481d3ab4a1bafec849611bb343b7d5de9ee0cfbce790. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SKU021800507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6e0512578e2c4d70ad4a18871dadd9958078a20fe8576737f89c43ada6c51c9. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SKU021800510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2cf3a981d5b9b3f0a10082f4ac5417eecd1656cbd0d69637f6cdf8a14bbba6ab. Chain 2 (Bitcoin): anchored in block 957587 (2026-07-11T16:48:26Z), 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/TCADO1884007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7bcb7a6fbbcb18ed2e5606da1daf8a2341a5bd7ded0f20a971996aeb0a47cece. 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/SKU021900602.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4c2b99d009b4de6bfa0decda53ca92ed676ebbb9d3823a49265578b800420cf. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/SKU022000603.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5a9f1cde9d1822f8439f09f2a19562dd61de3c655a61c593446a8a1f58be9fd0. Chain 2 (Bitcoin): anchored in block 957851 (2026-07-13T11:26:33Z), 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/SKU022000605.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0b690899644cbe9478d722c7dde46895f113a6d78f31803b9afe1a5e919069. Chain 2 (Bitcoin): anchored in block 958238 (2026-07-16T07:00:43Z), 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/SKU022000610.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa7d0d28ce6cf940d3f73763e867041295dd8ca6dfa69c3a38cae5657c1d20ff1. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:26:17Z), 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/SKU022000611.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22cabd33ba5387c8d8507f950a325244d2b2ca88788872465f1a896c22c28d4f. 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/SKU022000612.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x69dc80df18705cb75fe67106b0398b4edc849b95baa5c6179e98142053ff714e. Chain 2 (Bitcoin): anchored in block 958060 (2026-07-14T20:39:42Z), 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/SKU022000613.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcf5744d58c5b1d630195a909704e5cc47c4fbf148da5cc243e13b251fdab7c35. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/SKU022000614.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87234b299fe8f972edf4a90c8c17c12baa6d56aa6d3d91b116b3c62c7c916fd9. 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/SKU022000615.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e5d04d91b44b6e875388f25d5257ebd8836f521d1e1656ad422d230f5403268. 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/SKG081609103.