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 0xa6a49920b6c3ef3bb7c714c1b154c2a6ec49f4119054e46d507bd1327229538a. 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/e39b5ddf-6513-43cf-b33d-f3e9538337a6.json and https://artists.proofprofile.net/proofs/artist/e39b5ddf-6513-43cf-b33d-f3e9538337a6.ots, run `ots verify -f record.json proof.ots` (https://opentimestamps.org).
Vivianity - The Favourite Song Collection
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 0x78b2763ac7c40b78ad29f2f4cd40b834ce9f7ea74cd650f879f789aba12e3dda. 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/SEXGS1600107.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbed10df5364a88e1e4dd5ecca93c944b4f5a462c91f3e238a13432c72ba520b3. 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/SEBAA2101501.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbe9790a27b436519e698bab9acc1cd6c0fc3e2483707a257e6e74601a32a9519. 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/SEBAA2101502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb97ea7b6251d84d4efa029681d8016a33193f25f4ae8bb25df21ddf6e2d79e8e. 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/SEBAA2101503.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x75ea77d368d25ba66eb3e555e3dba2e7861c5f29db0a5a16bbba865a426925dd. 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/SEBAA2101504.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf4729e191e34333d3277e25eaec11a6fb03689bce920e1ef191afe5e63789d84. 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/SEBAA2101505.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb35a35f40bb3684b77f81ee5f9dd79d9961b13bf37f51e43aadd123e7f6f0107. 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/SEBAA2101506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xed04c6deb40e202c2d4278842f8dd589898c21b4d4527d97c8121451307c7c68. 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/SEBAA2101507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x64ec797e5a5db179f4ca88a736fe2d47657b222bc0a09e6e10cb29b4c8b1c4a3. 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/SEBAA2101508.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa130698337c927548c9d4f8601ce706e527f160bea99161e318b1e7615a078fe. 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/SEBAA2101509.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0e1e8e3a861de287996cad1c90827495ab71fc0384664ca4fc65a1edc4787034. 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/SEBAA2101510.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8935a93eb7251e6c5aa6dd8ba6048bed467d2cbb6878f2ef085e81b7f4309567. 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/SEBAA2101511.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39d33a54e3a95a486d25849d9f303cda8cffd29d35bab60b58594ff37beef64f. 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/SEBAA2101512.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6ad66a14d1451db1e9fa6f0f557cd353ab9edfa7f81f6843fbdbec64e5015997. 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/SEBAA2403104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd6a187c494560152b88aea34272a71cc7a462175f76710a896b3253c49a9fdbe. 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/SEBAA2403106.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xba6070bcf0b056ccf7cb46720056c48c2b8fe0b3dbeb39dd195cf81e1cca685d. 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/SEBAA2403111.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa484f3949557d81c2fe0c77a4dc28b551c86d1d1829886937a00be4b7a8b2e15. Chain 2 (Bitcoin): anchored in block 960203 (2026-07-30T03:35:13Z), 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/SEBAA2403101.
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 0xa15e858c7b42d65fd837eb5140368fe631bdcf6c5d101efc61a8f7224ab98d7b. 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/SEBAA2403102.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x68bba8e84b820e41f12b8c07b4707c67323944f3af2e42eb2d7789fd49881d74. Chain 2 (Bitcoin): anchored in block 960099 (2026-07-29T11:30:20Z), 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/SEBAA2403103.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd9388a4e552e307f123d8153d3928c5cfa56e67b81f333af5e9a14c68f0869f6. Chain 2 (Bitcoin): anchored in block 960314 (2026-07-30T21:00:46Z), 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/SEBAA2403301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe3409d0cb2a420914deda5060040c0bb4631ffafece4c53efcabd5d0f2a3f52b. Chain 2 (Bitcoin): anchored in block 960273 (2026-07-30T15:42:38Z), 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/SEBAA2403107.
What are you Doing the Rest of Your Life
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb6f002e05da428d5ea75a0b8f64e2b8a84b414a6a45f211d70eb735048783d68. Chain 2 (Bitcoin): anchored in block 960397 (2026-07-31T12:24:41Z), 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/SEBAA2403108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9f44102863fd013f6b91df148d761072ff116c0eb606bd91b4667baab7ec75df. Chain 2 (Bitcoin): anchored in block 960506 (2026-08-01T03:50:58Z), 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/SEBAA2403110.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf34b43e4b366b48283449bb189ce9f80e3432dac2fc3c5992a714815109a5978. 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/SEBAA1301104.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3c6bec4e796923cd494f4772af840e4e9ef15670d4559488e9fb476e9a85c2a5. 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/SEBAA1301108.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf9e7cd1b505cf56fd327a633438fc8ab264518797f4d783a75b12ec786b0acd0. Chain 2 (Bitcoin): anchored in block 960459 (2026-07-31T20:22:46Z), 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/DEBL60706110.