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 0xf54d1321654aed97eb07282bdf2a0c2e31181b0543188a02c5763ca42c566d84. 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/829aeeba-6b50-448c-8d15-3a2010843ec9.json and https://artists.proofprofile.net/proofs/artist/829aeeba-6b50-448c-8d15-3a2010843ec9.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 0x52c54dcbc9cb455e666cb65416c0a59a60ffc1565cb50bbb82400b3b3a4b78d2. Chain 2 (Bitcoin): anchored in block 958245 (2026-07-16T07:06:15Z), 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/JPF810801502.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec3d60685cffe59a91d136e08590b1757fb9a876504b351588441a1d45045f19. Chain 2 (Bitcoin): anchored in block 956476 (2026-07-03T09:04:44Z), 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/JPF810801506.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8e70c740adaf03f63d773e301aadf5d0f2ddda6845160ae1519a6b96decdd0cf. Chain 2 (Bitcoin): anchored in block 958401 (2026-07-17T11:10:25Z), 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/JPF810801802.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x9c0a0ed3ea99c02b676f0c7b0ff6970e7994540c671d00cbd580ab61bd75398b. Chain 2 (Bitcoin): anchored in block 958996 (2026-07-21T12:30:03Z), 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/JPF810801901.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5537d9b98a8ba9346924b8c003a9c3b14b83ff80a5b8b34aa764ddb736738413. 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/JPF810801908.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xfadfc8d22beb1ed504329395bcef0943cf62f8cf529448f2839c7078d3117271. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/JPF810802303.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x45c5757d9d4e1228ab72b214d27c3593cc67252a26177807f977aef6e385ca00. 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/JPF810802507.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x39e9f49a7ea35799899f2a2b7f67962a83cbc759bbddb2c6d6d3a2d0546556c2. Chain 2 (Bitcoin): anchored in block 957780 (2026-07-13T00:36:44Z), 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/JPVP01904301.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x8b1956105dec7a1ae6460416edecdb35bf6dca6d8586853480725e5adf361020. 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/JPVP01906804.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xcdbfa428a49a9a1f56b524f325908c23922ab9671810917a8501433ff867ef4b. Chain 2 (Bitcoin): anchored in block 958436 (2026-07-17T16:42:22Z), 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/JPVP01906805.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeb35fca8db4b1a80e52977ef59517b4fd1b264214c23771f768f57444677e1d7. Chain 2 (Bitcoin): anchored in block 956822 (2026-07-05T18:48:28Z), 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/JPVP01906806.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x724aadc07653d64e61aaccdd6b7820687f0fe0bfbc18662ca44e9032693da79e. 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/JPVP02119202.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xec66c678dc4feefe87fa331c33c877559770ab86767b02edde4b78676e003251. Chain 2 (Bitcoin): anchored in block 958430 (2026-07-17T15:33:28Z), 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/TCJPX2300219.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x2b8a01001149fdadc1a2f03bc672cb3c3c2d4a67bc5d0169f86dd65208493441. Chain 2 (Bitcoin): anchored in block 958373 (2026-07-17T06:09:33Z), 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/TCJPX2300254.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x0b9c93d3bd0e1ef044e1baa40456430e1a3cfdeb0314055577c1833c39d6a7f0. Chain 2 (Bitcoin): anchored in block 958444 (2026-07-17T19:12:23Z), 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/TCJPX2300258.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x76ba00461b9ec0d56cd228aac3bab62d743bdef3eafad7976a25c4089c003d8a. Chain 2 (Bitcoin): anchored in block 958234 (2026-07-16T03:46:09Z), 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/TCJPX2300319.