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 0x972aa7b0a9eae664291bfc54c103a279e30b471e1e703fc244a87226ab32130f. Chain 2 (Bitcoin): anchored in block 953697 (2026-06-14T21:49:28Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/7357e94e-dc83-4ee3-9e4b-f34d8db609dc.json and https://artists.proofprofile.net/proofs/artist/7357e94e-dc83-4ee3-9e4b-f34d8db609dc.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 0x787f26b1269b4b9a58e10aa70e59ca471fed104579acfab21ccd44759b5a749e. Chain 2 (Bitcoin): anchored in block 958468 (2026-07-18T00:27:51Z), 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/USA2P2528687.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x6c1659af28ff189137f4141417b17f2d59d9146eaecf71a23caa30dd7df21278. Chain 2 (Bitcoin): anchored in block 958448 (2026-07-17T19:49:21Z), 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/USA2P2528688.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2ce12be9fdafe36ac2ca896f0578812fb7a86c37939ad71aef2e7f9306eabc52. Chain 2 (Bitcoin): anchored in block 958106 (2026-07-15T05:35:13Z), 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/USA2P2528689.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa56895d56af45154a9ca8296327c9cc78541b800149ff33a9c12f32bb22387ff. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA2P2528686.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xb24f0d2661b6fa4cb537e7f3d1aec40e5e17e658cee0ff090b1c3f5a20be58b4. Chain 2 (Bitcoin): anchored in block 958286 (2026-07-16T12:43:37Z), 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/USA2P2528690.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x07e24c5580329a6da43031ec1b3523dd08076c12027d86017f05116b1330a29d. Chain 2 (Bitcoin): anchored in block 958484 (2026-07-18T03:34:53Z), 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/USA2P2531078.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x61f1e6ca73f210ec6944bce2480f36a650570dbf35ab06b8c68ebdfd94c4d0df. Chain 2 (Bitcoin): anchored in block 958276 (2026-07-16T12:37:11Z), 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/USA2P2531075.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc3abfe78ca103a2fba918673c20aafd516b24705d726f319ce6c8b1a85d18bed. 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/USA2P2531079.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xf60c8413b1438e75d123dd80fe496a74f186c07b2645297830bec7bd2c5765b6. Chain 2 (Bitcoin): anchored in block 958357 (2026-07-17T03:33:42Z), 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/USA2P2531076.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xd8d6b535acce5c265ace43181767288120e5f1f374b92c073f9eec111eb603fb. 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/USA2P2531077.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4ef503ad278e4dd26371a08e5a33732a6c1e0f18bdab2496c2975ef147e8607e. 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/USA2P2532579.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec406ac0b49a7a6b9073ffb8f413c619b559a1415ff132cbf756352e57b202cb. Chain 2 (Bitcoin): anchored in block 958256 (2026-07-16T07:22:18Z), 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/USA2P2532577.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xc0e935d121848173ff70ee63b0e7d5ae7ffaf0c5cce27829b36b0a0f0afc13d0. 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/USA2P2532578.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xff48d45536de41aea44cf35698569705c7e72646106d53a652511a0b98a27177. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA2P2532581.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0d5a15f4db936d7d57d8b7458bffed9dd792a31e62448adc6ba8e6394f6c321f. Chain 2 (Bitcoin): anchored in block 958335 (2026-07-16T22:37:47Z), 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/USA2P2534002.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcc2ad1004dbf4d35d31b617ac5f8a89c4e54c651340085ec7892bda6344d8276. Chain 2 (Bitcoin): anchored in block 958163 (2026-07-15T14:38:07Z), 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/USA2P2534005.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x93d95f80e277d4cca1b4da9c23f9e5971fdf0032cd3e7c23cee66946941472fd. Chain 2 (Bitcoin): anchored in block 956551 (2026-07-03T21:18:05Z), 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/USA2P2534003.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa79f938390d1a7ef40e80df5e86fa0c9b4ef95a44a54a4387cc1c1f690c861d3. Chain 2 (Bitcoin): anchored in block 956560 (2026-07-03T23:28:02Z), 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/USA2P2535224.
Que Nadie Sepa Mi Sufrir (Cover Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe0c264025f6357bd0afdd970e9c60e73d069de6c1e782db02c4c7cc2ae85e3a5. 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/USA2P2535223.
El Final De Nuestra Historia (Cover Version)
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8da51152a9c2c8a06928c243ca00289c7cf06659c0ac190304be79157d83d09f. 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/USA2P2536227.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe764c16db0eea2c5a7f10ae9159030743598dfb29d277ebdcd78b4b6cfc1a4ed. Chain 2 (Bitcoin): anchored in block 958110 (2026-07-15T06:57:12Z), 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/USA2P2536225.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30db5052514a79794bf0fefe9eaea7a14c2cbc1aee9fc467c05dcd39ee48e1fb. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USA2P2537852.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfd699f79a88aa1118fb2c588fd50e6a9c46d7389a3fdfb9c1955d95e67b19ab1. Chain 2 (Bitcoin): anchored in block 957788 (2026-07-13T02:37:37Z), 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/USA2P2537847.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xaf99634f3b79bdfed61e967fd805f3c0b5d63df88551bae3f928fc7cf7d5c9e3. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USA2P2537853.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x12c1cb152079fbb39e3946a1563d41075bb32a687374518d3fb42929aaa2bdf8. Chain 2 (Bitcoin): anchored in block 958166 (2026-07-15T15:55:19Z), 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/USA2P2537858.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x30a6c182b4ffc4ead82011250551b7423004349dae6a7aa507d52cddcb033e01. Chain 2 (Bitcoin): anchored in block 956422 (2026-07-03T01:01:38Z), 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/USA2P2537854.