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 0xd2a877bb5f5b2f919950e17731655ea14133616460e3ae73d807c41674a119d8. 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/c8af56ff-a74d-4cdd-8ebe-999375f49f3c.json and https://artists.proofprofile.net/proofs/artist/c8af56ff-a74d-4cdd-8ebe-999375f49f3c.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 0x8603db4996c32b77cd46f093e67b85d26072cea25d3540ccbff4b6de431c654f. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR9Z62000007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x941485940e769b3fe32ba761a114d489f61fc51a625675eb5adcbb4281c52919. 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/FR9Z62000096.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf199943d6af08ab21bda054c64a8e4e266e192ebc98f4a472af984cc90dbcf89. 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/FR9Z62100673.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd24dffa881333fe71c6cad969bd1dc62bf8f1c1a4377a5284c8e8ee86711d63b. 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/FR9Z62100677.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdf11ba5df84bf5c7399312282e3b1284554629278fa005b9bb36ee14b30d107d. Chain 2 (Bitcoin): anchored in block 956728 (2026-07-05T01:43:49Z), 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/FR9Z62100680.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe9b7d452ffd1697de1b15b4d76e4aac5ecefb592989a4dd978b3513ec8acf408. Chain 2 (Bitcoin): anchored in block 956725 (2026-07-05T01:12:41Z), 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/FR9Z62100678.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfff6809cf14f9d0186c6d9c574a7d513e35f0572b694ec633369140c9ea899a. 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/FR9Z62100679.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a68deb2fb5e43ce30f957bb28be267b08e1b1fab4a6545e13a280ad04cc789. 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/FR9Z62400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ca7b80293e36a400babd2362b49ede7011f2e4893bbfe8787bb9672720c9f5. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR9Z62400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de620a2d4362f63b90c8e8d4f2c92240fd1cdbcf305a0334d1afd6f4074c422. Chain 2 (Bitcoin): anchored in block 956772 (2026-07-05T10:01:46Z), 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/FR9Z62400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f39444d83d92654d01e08a003e5a128b907d32a8d30ce5fac158ac288869c07. 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/FR9Z62400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc2526218f7f5732306e30e3dbd2294508cca0a8e7cfef1105d49ccccfcb75678. 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/FR9Z62400182.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf5f9a685ab4ea192b323b1ff58b3f15cfed55d9a842eab01cb4141bad4561039. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9Z62400183.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1a68deb2fb5e43ce30f957bb28be267b08e1b1fab4a6545e13a280ad04cc789. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9Z62400184.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x79ca7b80293e36a400babd2362b49ede7011f2e4893bbfe8787bb9672720c9f5. Chain 2 (Bitcoin): anchored in block 953520 (2026-06-13T13:32:09Z), 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/FR9Z62400185.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0de620a2d4362f63b90c8e8d4f2c92240fd1cdbcf305a0334d1afd6f4074c422. Chain 2 (Bitcoin): anchored in block 953515 (2026-06-13T12:53:06Z), 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/FR9Z62400186.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8c28418e0864827c57019cb54b51e0ea6c1c60ba9408c3a6fcfa2d9a0c5391d. 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/FR9Z62400187.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4f39444d83d92654d01e08a003e5a128b907d32a8d30ce5fac158ac288869c07. Chain 2 (Bitcoin): anchored in block 953513 (2026-06-13T12:47:07Z), 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/FR9Z62400188.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x06373b6f6865629eda1f0fcef0924d242e4c32d3fde172297ef57c82a534c373. 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/FR9Z62400189.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb9024e920dd6d6c6f25f6e72955c733d4196f59f3c2ef10ddcde236a3e1bb3b9. 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/FR9Z62400190.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x23eca1c44cdf1b02817fb1d51c30e28fd8945ec0afff83f0b190bf7f46f50653. 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/FR9Z62400191.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3b9264816145d960ffb58af075ad80d7c42ff1a2a6d16a33cda3cbc91cfb43da. 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/FR9Z62100675.