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 0x7d5677ccb0c35ca35f40801745741379f098200b788d435207d4a03559a8bd95. Chain 2 (Bitcoin): anchored in block 953630 (2026-06-14T12:06:27Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/3045d462-c3d9-452f-a7a7-44863c91bbdb.json and https://artists.proofprofile.net/proofs/artist/3045d462-c3d9-452f-a7a7-44863c91bbdb.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
我在秋風之中等你 (花開花落花無悔）
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 0xae4f702b0751239c4b27cbd35aee595e1cb205afc628e5ce8eab090976cdf354. 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/HKE022289078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad7f3bbe416873713bd089aa0c26ef9d005725d02af689942d1d615745979e5c. 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/HKE022287500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x92f7a2f46c1701d4639e02a573abc0bd8be748225e2feb891407613404d3693c. 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/HKE022285558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf914cfa991477693c614b6d9d439a3de031cd2397193fc8d38eef6bbbd5e2a75. 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/HKE022285559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xecb31d908f19111999c236b6d8097e18bbd916c10d2f4b7539fe175088856233. 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/HKE022285563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21ab447da9d3c7c6f33e692f7822754046d3bfa6ae4584b6ce7f3e99c39ae3e. 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/HKE022285566.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2d58c7fe0ea8a7fd1256865d9b49316a8c10ef129a48037984fe370e40d45d3b. 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/HKE022285567.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x19ce448402b977705f515b3ee118fd23d4b0a6209c9add270c0638761ed8ce9b. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/HKE022285562.
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 0x343488836486790802327eb8c05d7e181a2e494ac49c02ceef058b7a973ee198. Chain 2 (Bitcoin): anchored in block 956894 (2026-07-06T07:53:57Z), 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/HKE022285261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1cf36b777c5e3b0bb2a6d1a38f83e2379d37427c220db1220f38f8e9e19d6a87. 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/HKE022285266.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2caf3a1ccb229c7a96e52580e07c112875205dea39c2dec227b2af99b18ee7e9. 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/HKE022284444.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe45c42ceecb0a03c6aed184d1ca562b1564d10194e671cac0ad818284068b6aa. 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/HKE022284445.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8ce09dfd2573135ac999256431bab660722434e6259488bffb59ede7e7a8ff31. 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/HKE022284446.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x01f7052ba4d40d628a5e00163b9921a1f529652edb686a8df0258af916d43ac4. 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/HKE022284448.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xce950e1470141b61fff3edd3ac2e85dd78b14d43408a30b30fa0d5eca638243f. 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/HKE022284451.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd1cd41409b961566c85b5c80db6fc63bee5890ad78ee29ae088fa75b76cd0073. 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/HKE022284452.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6724ad17de623e6cc705e065f05fd0cf8b7c115238aab3b62ef8fa4699706022. 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/HKE022284198.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe4516ab7f7951a20f679efd680a097e2aade024f9865647c8c6b06cc446a11cf. 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/HKE022279476.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4fc7c5bcc6d68b18b11301278b02e12887e64fbac86b097d4daf046b3632682f. 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/HKE022279477.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcbf951a77c2993f3e1f8e2a5b0a4fb034e5525a4d1a1befe9690ff91cd8545e3. 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/HKE022279483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8130e5e390a7fea68f6e6be3d30bda993c5cd5308e9733b6dd30571ea26a8b2. Chain 2 (Bitcoin): anchored in block 960455 (2026-07-31T19:53:13Z), 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/HKE022279482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x260af0f32aed7c3e4c08b528e6f1888879091adde55a23dac8fce5274a950248. 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/HKE022371228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97827ae8ac047c6b15a393151b7b1a342798f3d7cbb31f7dce95130f39c335eb. Chain 2 (Bitcoin): anchored in block 960334 (2026-07-31T02:19:15Z), 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/HKE022371231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x589be5f1aecf8fd3c4a086f18e9b6b4ee15a1599acdae0b0d0f36a947d39f6cd. 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/HKE022371363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb7edd8b845f0ae43e5abf9dba44731c51abbf7a53f63bb85c46f9595b4512c1c. 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/HKE022371364.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe513879c8d88bc52488bdaaae6919624d53663b963f1a9f4504aae7ef3c20ce2. Chain 2 (Bitcoin): anchored in block 960370 (2026-07-31T08:38:45Z), 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/HKE022371366.