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 0x0e4a5942e9937c4319a314d260859b88bc76725e0e29db649ee73f40602cf530. Chain 2 (Bitcoin): anchored in block 953599 (2026-06-14T06:43:55Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/0bfa2f41-c7ec-4109-8dc2-8b43d50ae763.json and https://artists.proofprofile.net/proofs/artist/0bfa2f41-c7ec-4109-8dc2-8b43d50ae763.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 0x3d641227714243168d62a7c646be519bff1ccf8369ad4e5dfa955d4de7e444b5. Chain 2 (Bitcoin): anchored in block 956776 (2026-07-05T10:59:37Z), 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/TCAIX2409323.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30e8e9d5e09de6e856db97b70fc1cb114a1f78d2c9c93b44e59e0eea37c60b35. Chain 2 (Bitcoin): anchored in block 958770 (2026-07-19T21:24:39Z), 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/TCAIX2409326.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd2039e72340ee6c82f3e4952985ebe43e85c38f3dbc056d1fed2fe2a363fb389. Chain 2 (Bitcoin): anchored in block 958711 (2026-07-19T09:26:32Z), 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/TCAIX2409329.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2386150ad5cdbed0dd84e85595fdbfdcede72038b478840b3f3a3e950b55a00a. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T08:05:39Z), 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/TCAIX2409345.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf017904c8750a87e04d0acc3835e8c813c52167f650df0a5fad59e4bce30ac9d. Chain 2 (Bitcoin): anchored in block 958734 (2026-07-19T12:54:58Z), 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/TCAIX2409352.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xac0927c434465a710e6d5e2f977ce8e8770308fdcd1c9c0d3580383af2749a76. Chain 2 (Bitcoin): anchored in block 958796 (2026-07-20T01:53:58Z), 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/TCAIX2409358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x54519baa44b9a7149a875491a3fa51582c8757020f612a220b4048f7b96f656d. Chain 2 (Bitcoin): anchored in block 958749 (2026-07-19T15:48:23Z), 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/TCAIX2409360.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe749675dd3985ff0193611a2e938beec30e86d851ab94d745175eb69d61cb43c. 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/TCAIX2409410.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c6aeaf2cce7b56df2148bec0ba5a2e760f5ee6cab849dff54016174cfe7456. 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/TCAIX2409413.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x457eb589eda0d2e376e8b135a2b6f2d4a08f0c8985c81c991d2f769c54c02ceb. 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/TCAIX2409418.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c55da59266a596f7ec4dc90cdb2534dbf8e4d1929fae7fab0d73abd258d0a7d. Chain 2 (Bitcoin): anchored in block 958607 (2026-07-18T21:01:11Z), 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/TCAIX2409420.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x87fc8a1fa713db8d7b1e407e5d825f0e2cdd86f4d367b93838c5f5b921379e67. Chain 2 (Bitcoin): anchored in block 958621 (2026-07-18T22:59:44Z), 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/TCAIX2409429.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd21df571ff5c2c7ae3361c1d551e631ee882455213936dd4b0f7468a0e458736. Chain 2 (Bitcoin): anchored in block 958838 (2026-07-20T07:01:21Z), 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/TCAIX2409457.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc454b0c1d75c83d86d8fa732a5704aa3cd49701566ab44721d9b09d1756a2ec1. Chain 2 (Bitcoin): anchored in block 958765 (2026-07-19T20:43:39Z), 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/TCAIX2409459.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4aad9a65618cadfe750286b1f2a0d193ebdb7e1d624557836898a18218c79ef3. Chain 2 (Bitcoin): anchored in block 958738 (2026-07-19T15:54:50Z), 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/TCAIX2409466.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xde280d5d8196bd5099fe4024c5e40ee21d121b394f5a2590d26598c7afb1c8ff. Chain 2 (Bitcoin): anchored in block 958617 (2026-07-18T22:07:13Z), 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/TCAIX2409468.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf843b135407c06fc1bc39117d749962e6809bf7cac82b9145492030520877dba. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:54:34Z), 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/TCAIX2409471.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xda261b7824030b06143488da2a7f4dd96306f82179d45626f834b7bde52caca4. Chain 2 (Bitcoin): anchored in block 958742 (2026-07-19T14:09:34Z), 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/TCAIX2409482.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4e529da6c83a1f541163554349d9e2b8dc17a5185a55f26df158f3c278939d54. Chain 2 (Bitcoin): anchored in block 958576 (2026-07-18T16:22:28Z), 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/TCAIX2409483.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0f2647e0ada10b9b614fec29da4429e348be858eedb8f945ae1a3713d75a1acb. 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/TCAIX2409485.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc7731774d126ba9cf23d2c58eeb6f96066a1db3f8a81e033afe812049b6e877. Chain 2 (Bitcoin): anchored in block 958761 (2026-07-19T20:30:48Z), 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/TCAIX2409493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed588827552a05b12f8ac5b5a5a97ef5ef99d3bbea1e81ceebd9eb8463f3fba2. Chain 2 (Bitcoin): anchored in block 958798 (2026-07-20T02:44:27Z), 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/TCAIX2409499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d5ee0152b702c3fc3b6b708f2e829b6b740ca9a0318bf83d7863aa0d8286d32. Chain 2 (Bitcoin): anchored in block 958572 (2026-07-18T15:47:37Z), 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/TCAIX2409502.