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 0xbd630e664f6a36080a33e944c2045234e163ccd1c4d9bd01330334f2b9d090e2. Chain 2 (Bitcoin): anchored in block 953408 (2026-06-12T19:28:13Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/77766760-f39b-41b9-a365-6d59b197a7cb.json and https://artists.proofprofile.net/proofs/artist/77766760-f39b-41b9-a365-6d59b197a7cb.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 0x067967b963af8257257ee30c344fd8898356d089ba2bb1d6557ea1b5600edd9a. 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/BC1WB2300002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c72d51aec94d7216c772c2b758326fdcd84f644b688470882ab8696ce5daf28. 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/BC1WB2400007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d813cfbe91b23d1aac85ed3f55a5e174a6f4b12042c6d113f1fe2cc70ede46. 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/BC1WB2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb273364f242b039072e254ed8c23cdd896eecf3d0a8306a63f1bcb9677741724. 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/BC1WB2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f015a8f028ae109944b3aaeaa2f58ef0575ebcf43152adeacf673ca3030278. 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/BC1WB2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3066ac4cccb6154440501ed1e85b03bd3e63bbee54bd0b844af80ff9fec8e855. 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/BC1WB2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0862d7994ffbc220815469e0f8ad378853fe2ab06b126f1d691d9e326c55869. 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/BC1WB2400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9dc67826d4c167eaff546d8464f8443e2d1a148950126fd3b4dd2c7fc4cae684. 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/BC1WB2400012.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ff16bb4efd7d7df764c46bd8543bd5c9c3217002fd7998df8650c94f12e099. 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/BC1WB2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbdd81eaf176893c04f8ef1dda7d80b3a51cfdf07fbc086b106208e3303e342ba. 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/BC1WB2300010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb47da97cf497f5f815d1371ac9b7bb65198b47e05425c94d78962d4d4b078f. 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/BC1WB2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0af394d67cfa50b16972e449f14c5d6655df8b4e11a04eaff188540c4dd30d4. 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/BC1WB2300013.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fc5da8b4339e3364499536ea6013ed9fa15e22fc80390e55ab1d8048b0fc3c4. 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/BC1WB2200008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6628995f827c5ddbf18c61374d3211e6be3e8a3e7ad9ae5f5359768258a59e09. 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/BC1WB2200005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6addc3a2ee0bc6a45cff7c8cb40a02f1b94e235f2ab0dd1e94d88d8a9b08b229. 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/BC1WB2500001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7c8cf484f1e323d18a2acf55f3c2f0b8bd3e01bed11c853cb5304082defe78a9. 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/BX6T12400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x153d1c5d4bbcdff6f211066f11e3cfb37e88680c01daaeddc97cc35b9f707851. 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/BX6T12400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x203c8dba38c58d335db928f201c1bdce6d4f8f78eec307ae91c643a828477575. 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/BX6T12400006.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3066ac4cccb6154440501ed1e85b03bd3e63bbee54bd0b844af80ff9fec8e855. 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/BC1WB2400009.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb273364f242b039072e254ed8c23cdd896eecf3d0a8306a63f1bcb9677741724. 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/BC1WB2400008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9d813cfbe91b23d1aac85ed3f55a5e174a6f4b12042c6d113f1fe2cc70ede46. Chain 2 (Bitcoin): anchored in block 957061 (2026-07-07T16:07:00Z), 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/BC1WB2400005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa761eca28d60c4e3dfa1fb27b05bcb27b470f9932190a6852a8e0e271475086b. 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/BC1WB2400004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x89f015a8f028ae109944b3aaeaa2f58ef0575ebcf43152adeacf673ca3030278. 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/BC1WB2400003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb1bf1f02bdc8d767610e09f7e3ba12be85c3bee8a0ea2207179032878cd9be02. 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/BC1WB2400002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c5adc83508a9f72c5d9f1364d1bea1cf5792204cd85ab8262a3a892d7ea7e2e. 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/BC1WB2400001.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf0ff16bb4efd7d7df764c46bd8543bd5c9c3217002fd7998df8650c94f12e099. 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/BC1WB2300008.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6fb47da97cf497f5f815d1371ac9b7bb65198b47e05425c94d78962d4d4b078f. 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/BC1WB2300007.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x988fcc9114f6603c32ec9e122b9eca3329dc9b99929cec8f2d39c7a675b6b116. 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/BC1WB2300005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0282e798b7120214ea415e28d72804c962727100c06a617b964601ed1b23f360. 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/BC1WB2300004.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x34c13973cc7a9a852ccf18e7bbdb9326a1f1bdb2c45e8f109bce0350f1daf49b. 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/BKG212400010.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc618188f0e588e31d670b4f1132e92c978da7dcb955a064311d939bf7bcf6af1. 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/GXD7G2478564.