1. Compute SHA-256 of OTSCanonicalRecord value → must equal OTSHash 2. Open OTSProofURL → extract Bitcoin block number → must equal OTSBitcoinBlock 3. GET OTSBitcoinBlockVerifyURL → block must exist at that height 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 0x5bc04783b381adc6ebc4ef829c725824e82b804aa19b82ecb8f341b1ad615299. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/a111e3f1-cc5c-4140-9f7b-01a52bb7d16f.json and https://artists.proofprofile.net/proofs/artist/a111e3f1-cc5c-4140-9f7b-01a52bb7d16f.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 → block OTSBitcoinBlock must exist at that height 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 0xecc521695cb3a324e7eb57438a48f3bcb4593a4933b190bc05b92a64a80c1bea. 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/QZNWQ2234326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e8bb855b90eb8f594a15c775156546dac1fbefc2070a02e9dcec1376e5afdc2. 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/QZNWQ2234329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x09de6a631841e2f34ba089dff5fe4c8d0e6d3164dff59c2f02f81a07d098d796. 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/QZNWQ2234331.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c34e6ce935cb350f5b87ee10e5ecf3e094637344fbfa356590d2162b007cc83. 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/QZNWQ2234333.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x37a84d8f445bf61ed757ef6a9f1d88c9efc7b0234ad11619903fae3d7e510715. 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/QZTBA2217385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x78c83b6f34c5dea3014083d66f4e43201f1c44271d80f94f5fb65fe4720e85c4. 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/QZNWT2471004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x95c7c5758aa16a2b2c72e5abcef3d253e0437fb688d25322f0dc318ad0256f95. Chain 2 (Bitcoin): anchored in block 956302 (2026-07-02T03:30:09Z), 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/QZHNB2411340.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x85d17c3798c42fd785954e3dc85cd07a4321d6a0965ef9f036f7f0cbbd2c0130. Chain 2 (Bitcoin): anchored in block 957075 (2026-07-07T18:50:38Z), 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/QZHNB2411341.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd3ea7f14a59127492623359fec6d74fd166e74d360f748dab051d907d2d72e7f. 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/QZHNB2411342.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c20e4a1e046874311f7e3f64a2adf451c792d9e38fffb8850323b2986589ff2. 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/QZPLR2305982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8c68159d474d2519201c7e9ff2416f6f0266589ea474cff5ca73b2a4730a792f. 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/QZDA72347233.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x311376963ee0f263a09634e6f5e2f3813cf0911b64511426c4754f66019200bb. 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/QZDA52363152.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3deaa1e5045ab14e4373a356c7c25fbe76ee0c1a32cbcae2c9dc9a7623cb4696. 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/USL4R2119882.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa936d2d51eaf590f991065c9098e5b86dc30e9e82328495e90cfcef02ebefe1e. 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/QZTB22322705.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdd0360a4cbeb2baf981448c094e4e2ad40ab27b9d41c51d3f9d00964200370ed. 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/QZTBD2483853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa975fd3647b357a08605ea5f7a54458aa4016de08bed97e78ac0cd32ee933879. 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/QZTBD2483855.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7917c2ffe58ef802a4f914895c552c5a1c84d723190e560356d49290758904ae. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTBD2483856.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf85853b59eac7730c6d25f2d114c81ac7e267576ed55c940f97450ad1823c3db. 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/QZNWY2458722.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3ac692d3993aaa447a3390168e90b1a3a655e77d1db8977e592ab3a14a5692ea. 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/QZTBD2483858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x764f34a7d4e6e79dd46494b96428a97dfc5705c54e362bd29e25dee2aacb9ffd. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZTBD2483859.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ada728417546f04aa858507c6124fa0b86ec4db2b1ce270aeeff05ab58ea0f7. 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/QZWFE2424802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd27280f98be3594f17ae35cbee618a42f70e32a06f65d9865d68c6fdc4416a58. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFE2424803.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xafd517480b731685557d8295048657b53e8eef27ed24b0af69b452bfabbff6cb. 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/QZWFE2424804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6b8b5bf7d9174e5577da94e850a780fbf0f207093c889c602bfa0f3f5f005d8. Chain 2 (Bitcoin): anchored in block 956351 (2026-07-02T11:38:34Z), 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/QZWFE2424805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5000c8b3c2a99c5053290fd875fafde9a22f566a3b574085db39359ac1ec4769. 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/QZWFE2424807.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4a68cbc763307c41760393e9394c419a8f8c629a9b40d406670df192a96521d0. Chain 2 (Bitcoin): anchored in block 956349 (2026-07-02T11:34:59Z), 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/QZWFE2424808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xccbbf1752d4bd3be7fc8264ffa5505567f1f73cbd735f8cb5519e839cf3f362b. 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/QZWFE2424810.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c53dc7c3e316c750b148a9c557ea831327148fd62757a56b09f741af25c149e. 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/QZWFE2424812.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c20e4a1e046874311f7e3f64a2adf451c792d9e38fffb8850323b2986589ff2. 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/QZPLR2305982.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9045b79b9282bfe179f7f87702b2b869ca10337625f339b53d858e89576a02c. 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/QZTBE2392261.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x56c3b4567705f07897d70e7db2e01a1ddbee4cf4e0625048729a577425b92f6b. 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/QZNWV2456207.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe150c89271c7ec48653ec4ac4ef4d7ca7b5a29b9b17a3a3dec2d696b4468de50. 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/QZZ8A2420038.