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 0xe420c9e69ee1e317c99981aba4f975f15ab247e3b1efaa0758895f60ad17ee01. 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/2761127f-01db-4ce0-b1da-6a36514d2ec7.json and https://artists.proofprofile.net/proofs/artist/2761127f-01db-4ce0-b1da-6a36514d2ec7.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 0x423f758512cb6057820779af6d64832fe88a3db30620f7231f66b30cde5ceb78. 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/QM4TX2403562.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a4886032710843945513bb36736578e683191f4302083850da8c8439e95c9f3. 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/CA5KR2405033.
Automotivo Massacre Do Ritmo 1.0 - Slowed
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb8930a39fa5b2a7e8ec2ac5cb5051c63af2b0e05246e2c25dbb22d53937a737c. Chain 2 (Bitcoin): anchored in block 956375 (2026-07-17T00:07:20Z), 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/CA5KR2405035.
Automotivo Massacre Do Ritmo 1.0 - Sped Up
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x15ad37ef36e986b950ccf7ace88e9c7bd854545f4c2e9131e1df02a187e87e56. Chain 2 (Bitcoin): anchored in block 960138 (2026-07-29T19:35:34Z), 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/CA5KR2405034.
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 Note: an OTS proof may carry multiple Bitcoin attestations; OTSBitcoinBlock is the earliest confirmed one — a later attestation inside the proof corroborates it and is not a mismatch
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6f06325797d171061a72b25f4073b3c2b6248b4a49cfe91db74a55a00dc956e. 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/QM6MZ2465755.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbf37851b2432325f0f5cd726a8edc90c534cec63828b60d3a488e7bd61c748d8. 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/QM6MZ2465756.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x96c81d1215931e532e34ef7a430a81c64dc2b365803b62e64b93ad97a0d4c4a0. 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/QM6MZ2465757.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x91c217f524e08075b186f92d2315ccac15e41523a71375f033c8540b42406a7b. 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/QM6MZ2424704.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3390c60758333e7516261665d75f99799404f395038671fa5e3cb093e705c16d. 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/CA5KR2465651.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x143e63193a95183d65ab91cd5a3dba35a85cc3212341b7b1d177282b92d186e6. 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/QMANG2250724.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8cb2d01c70d75a393793c3838740cad415150df6f51e2863fb7050ce2a331caa. 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/QMDA72353813.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9120b26642d0ce807276fa3fd730b5934903cd0df40e2393950349c838d8f778. 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/QMBZ92394363.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaff49ad518d24d2528c4abdef12be465dcd5b9ad9e389e8092cd0aec16031581. 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/QM4TX2403563.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x80ce163fb237d6e6b68c305dfb8d4cbe7b597d7ae6c9ab591fc3faa9e29e9829. 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/QM4TX2403561.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xdb00075d5a96b298b36c3ca0491f8d675b2312f53bfa29965337dacba94accfd. 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/QM4TX2337437.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbb9e0bbb3f9e1f3aed603623a54f36b22b4a1851fedd8747a306d1dede31094c. 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/QM4TW2371228.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd961e0500b48c52da5cc1e10f9b3cd709a53fc08456b1f24c4ac87de5485fc90. 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/QM4TX2309808.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76af64482583f870cdf7b4cf0944c68580adeb426060fd3f75c6f73da4e7f7f5. Chain 2 (Bitcoin): anchored in block 959137 (2026-07-22T14:03:35Z), 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/QMBZ92388441.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c16b28874f617c970f2ba234233a26c7e8c8fe5630b8cb4c5770eef7cfbb3d3. Chain 2 (Bitcoin): anchored in block 960296 (2026-07-30T19:11:09Z), 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/QMDA72353822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd0676b3829181c6a026827627fcd2b6749b31562c997ce36d6974f66d5e0e6ba. Chain 2 (Bitcoin): anchored in block 960212 (2026-07-30T05:43:45Z), 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/QM4TX2337460.