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 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 0xb287037d7265ce84778e48ed5370f9694d7d3d98ca81f65f59908e45740ba6dc. Chain 2 (Bitcoin): anchored in block 953407 (2026-06-12T19:24:56Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/465e4625-126d-4cca-951b-8e015282866f.json and https://artists.proofprofile.net/proofs/artist/465e4625-126d-4cca-951b-8e015282866f.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 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 0x8fccc6a7adf5b4ecfb1c006a32bee252adb6a09f89209ab9581c2c72ddb86d65. 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/CA5KR1956203.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7b5ca8dca91bd4637c89a5cb36570fb36af8eef0431f516b4edbd46a328fe4d0. 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/US83Z2006843.
Sensativas - Dolph Underwater Love Remix
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x3a3ad7ef5d1fad9f4810906aa0aebc34c4b9ae1164025fd2ed4de5624f919641. Chain 2 (Bitcoin): anchored in block 960209 (2026-07-30T05:15:54Z), 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/US83Z2006844.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x722816c4d42618d5b387d540de6427b01c99cad53330352d7222d74cc7a89a8d. 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/US83Z2006845.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x97c29116f6b4d1dd75f9ce742e0553e277b7936db240e57b8477f35946957a2f. 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/US83Z2006846.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5ff438cfecaf5ae02de38426b4a450174404e4d379cb830ea62a0be497718e72. Chain 2 (Bitcoin): anchored in block 960105 (2026-07-29T12:35:17Z), 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/US83Z2006847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5023646ca8d3f3db8881f7737f7d6606646f8088fb7a1d4272478a10ea5b5377. Chain 2 (Bitcoin): anchored in block 960236 (2026-07-30T09:37:10Z), 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/US83Z2006848.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x888d470b3cddeaf22050da084b20217b9a43c5a48f41ba2c762613262d3ed40a. Chain 2 (Bitcoin): anchored in block 956545 (2026-07-03T19:59:51Z), 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/NLRD51966489.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeba851d1d4db1a71e90335cd373a95a89d804da11d7e6d2192bef7b10dd59175. Chain 2 (Bitcoin): anchored in block 958832 (2026-07-20T05:43:55Z), 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/NLRD51966493.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8197556739a098dc46224751b0b54c940b9e8d79b81c25ff27cd2acc4e44267d. Chain 2 (Bitcoin): anchored in block 957882 (2026-07-13T16:48:10Z), 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/NLRD52025474.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb3d4c6e4ecd2b1ef72e6e32f9da53b58708f99b99af0715119e928f818f3e301. 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/US83Z2236820.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd964cb538e938640867914b8ef7af0dc44abf450f82001dc92d1db342771c2ae. Chain 2 (Bitcoin): anchored in block 958901 (2026-07-20T15:07:00Z), 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/US83Z2236822.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcac306f355dcb93fe0b54052165cc7382514427edadab45750a0501a086170d4. Chain 2 (Bitcoin): anchored in block 958194 (2026-07-15T20:32:27Z), 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/US83Z2236823.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xedf46c16ecbba2ae80796fea1cdc163e10d93cb238f3d9c5e4eaf21e0b42c3ad. 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/US83Z2236824.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc9b21d2c528b90bf762b29f8375ea170a9583f2c2f1650a984706865c77b7888. 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/US83Z2311385.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224b6c92e494bbc5cd5b394453a4df72a99829e17e4019334cd461ba8d4ecbdf. Chain 2 (Bitcoin): anchored in block 958720 (2026-07-19T10:53:46Z), 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/US83Z2331520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xad9bc7236d55202f5a210210690ec444c1df8ef5e7b1cfa4343dfb862cbc0bcb. 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/NLRD52350499.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd7634a10afbf2932ef098cac3d7d7424454c2224340b95a39d5bed6fed778207. 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/NLRD52350500.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe6ae2bca78e2b070d06af6ebb4f05e199ec2de629b138766be3192ca0f4e3194. Chain 2 (Bitcoin): anchored in block 956474 (2026-07-03T08:56:35Z), 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/US83Z2485283.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x863ffad0e8049d37db30f6ab64d131800f69e4b076c543af106cea3ebda92c8e. Chain 2 (Bitcoin): anchored in block 958917 (2026-07-20T17:53:56Z), 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/US83Z2485285.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa726caca8f1ec5f8d3aa1fe9546855a27da8491e618aa4b1094ea2e4dec940f6. Chain 2 (Bitcoin): anchored in block 956826 (2026-07-05T19:27:56Z), 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/US83Z2485286.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4cf63d00fddd9c257ce703c15f959d16de53cf88969f5734476ad7ec0ba79f41. 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/US83Z2485288.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x22b674ce9a0e40e8f2a720084fbf31cc7ae57a1788be7733adfd7e40a0a377c1. 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/NLRD52350548.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ff5dc86c2b11e1103d9f66bf3aece3253eb167bd6a0d0f5d7b6aff9acfaf73. 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/DEY472179080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x415eb845bd5902564614f99a8f1371761a73fe81f44198bfc724d05edd97dea3. Chain 2 (Bitcoin): anchored in block 960418 (2026-07-31T15:20:15Z), 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/US83Z2042358.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x1111f30c5db64ddd6056e9fc14c85df702826029c97b84342c2d394906a8ddcf. Chain 2 (Bitcoin): anchored in block 960223 (2026-07-30T07:51:46Z), 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/US83Z2013112.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa0c211c8ff069d9268de7ad7e1bb9f2baa3bbb1bfebf6a78fb96d3ba6dedba58. Chain 2 (Bitcoin): anchored in block 960111 (2026-07-29T13:21:01Z), 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/US83Z1922449.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x13ff5dc86c2b11e1103d9f66bf3aece3253eb167bd6a0d0f5d7b6aff9acfaf73. 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/DEY472179080.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf6d341fcfc11ed67435e5296c4fa0c18a5022d6159bd807fa1c6d9a3525f90a1. Chain 2 (Bitcoin): anchored in block 956889 (2026-07-06T06:56:49Z), 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/US83Z2001899.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2a801dab6b78092f1e7ff0cf01d2d2f4ac146d513fe31982c68b93093d4bfd2a. 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/GBKQU2111867.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa63626a1a3692a0aea7044e19b0a9e0df583c44a95078e5a3aef852e1dcdc0ff. 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/US83Z2467214.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x224b6c92e494bbc5cd5b394453a4df72a99829e17e4019334cd461ba8d4ecbdf. Chain 2 (Bitcoin): anchored in block 960368 (2026-07-31T08:26:41Z), 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/US83Z2331520.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbaffb1efa2cd114f728a91fe9503e2a726c59613519ca1c05e131c7b1ed370ba. 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/US83Z2151212.