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 0x80fde70b03b7e94b9b2c26958d86a32a08c5a82093f73f294d1c5190a2bd7b66. 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/610cf2bc-679f-460a-9b1a-eb90f888d530.json and https://artists.proofprofile.net/proofs/artist/610cf2bc-679f-460a-9b1a-eb90f888d530.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 0x7976407d8f0849ed080ce0f623ca97616c50d7253a8a8076716eb4549b4f6ea8. Chain 2 (Bitcoin): anchored in block 958263 (2026-07-16T10:54:37Z), 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/QZNWT2322229.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9167bde3722ffad9b0292235a4a09fc8e89fe85f9b5681df99e845edd7633d2. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZNWT2322230.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3f04b9956dff1020f86947db685143c59834d686e029208df7586425f8790ef5. Chain 2 (Bitcoin): anchored in block 958152 (2026-07-15T13:51:39Z), 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/QZNWT2322231.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb33ef6a1b414589531c68d3741e7ac46c46108a17531cc5afdf550cadf32e653. Chain 2 (Bitcoin): anchored in block 958316 (2026-07-16T19:42:29Z), 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/QZNWT2322232.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f9712e49926a083313bd1bdb1a82c7f07d3442eaeaee8082ec3689bc9ed282. Chain 2 (Bitcoin): anchored in block 958180 (2026-07-15T20:29:04Z), 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/QZNWT2322235.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0cd92df7317efe1e5a5d05b0ff094bbb6a63cade587c8d8c1f93f45cb3ff7acc. 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/QZNWT2322236.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12262f678c8c984a565aad6ede1d1c7b162ba56fd4fa0e2b5db50713a923074d. 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/QZNWU2347556.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7a382850852fa31f827f4eaf10cb38faa2dfedf04560a747a9b556567168272a. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZNWU2347557.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97641ff08054e8a7a2f7434cb75e1a21dc5a5385ff6f849d635bc131e0e03f72. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNWU2347558.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa69df886f5c3abadde199a80f99c8cd78a9f916063888497c0c0548946ce80ef. Chain 2 (Bitcoin): anchored in block 958170 (2026-07-15T19:06:50Z), 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/QZNWU2347559.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x66ba698effbcddc5be4d5f86ca06e0a4cbfffe3dffbc97963bb97d41c3f2ee52. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZNWU2347563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x461f6fcb859c8c452930acb2d630e7d3678b88ccc63cc8d69dae3fe5b5682826. Chain 2 (Bitcoin): anchored in block 958087 (2026-07-15T02:56:49Z), 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/QZNWU2347564.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc1f2d3081ecb9df22da3be282ffe4d4a21f9e50b00e88eef5fe9988c25a56efe. Chain 2 (Bitcoin): anchored in block 958176 (2026-07-15T18:21:21Z), 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/QZNWY2349881.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6bbd84952b0360d00c78fe23f51f29e802c81170034aab4fcda51c825b9b792. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T12:03:04Z), 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/QZNWY2349883.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbc64a6c9d7313c123eb6c822db3766edc3c814df5f67d16ca7240279d67231ce. Chain 2 (Bitcoin): anchored in block 958095 (2026-07-15T04:30:08Z), 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/QZNWY2349884.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe78488a785afaf848647fa05ae8950261827cf5c2f879ef448d705c3b9ab8cce. Chain 2 (Bitcoin): anchored in block 958086 (2026-07-15T02:55:47Z), 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/QZNWY2349887.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5e340c9cd584436626719ec774b60d99806316e082b77e8f97fa5184779c8eab. Chain 2 (Bitcoin): anchored in block 958153 (2026-07-15T14:11:41Z), 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/QZHN72564408.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa5fa66fb95fa42f9a02fb8e0bf3d4f8db8002571c3a065edf935fb91fea94a40. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN72564409.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd623ee56e38a1a3ec2405a4e596218c50298d0d661b01fb41a3ac4f3774bd620. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:48:00Z), 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/QZHN72564410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f22f14877d6c32d86bdf63d06464abe470775fb514bb343973ca27eaab2b4a0. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/QZHN72564411.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9becd47a840fdd4bd171f8d20da783c640319be2ee0f106a0befb00c0b8a294d. Chain 2 (Bitcoin): anchored in block 958319 (2026-07-16T20:12:32Z), 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/QZHN72564412.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf62901f509ba866b1e99d927e53b0cc71db431684dd7287d9c3363fa1be13968. Chain 2 (Bitcoin): anchored in block 958079 (2026-07-15T00:21:05Z), 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/QZHN72564413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3f53bdfb7a8aac39aa26c230061ca1badb391d8be46a9a6b2abd6399658aba3. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/QZHN72564414.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4277df1d4ba16837aaf7deeee4ac31aba75b0369583f29b907b5337f3b054d70. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/QZHN72564415.