Playland may refer to: Entertainment venues Playland (Fresno), an amusement park in Fresno, California, U.S. Playland (New York), an amusement park in Rye, New York, U.S. Playland (Vancouver), an amu
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 0x523990ee8241032e7592926ecf4242f4ef37804934a9ea27e79d58a8c41230e9. Chain 2 (Bitcoin): anchored in block 953770 (2026-06-15T09:50:11Z). Bridge: the canonical record inside this Bitcoin proof contains the same CopyrightID. Verify: download https://artists.proofprofile.net/proofs/artist/c13f1dc0-4169-4363-8dd4-668f3fa9cdce.json and https://artists.proofprofile.net/proofs/artist/c13f1dc0-4169-4363-8dd4-668f3fa9cdce.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 0xfd48d9931d08decd92e3dfa9c53a75169d518ccc80dfb799b3772c7afdd4e8bc. 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/TCAJI2585907.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4d5963051ad839b11a22daf8e1a27932c6f75305e70e45af06a1dee1b4d5d32b. 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/TCAJI2585911.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x252ed75c5acdd0b79fcaabb019a2ada7337a9e1ae5548a17010fe55459a37548. 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/TCAJI2585913.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xbfaa5e7eac36add7cc81b15dc6f219b060dba882b5f0b0771497d6df4b801e2e. Chain 2 (Bitcoin): anchored in block 957750 (2026-07-12T20:39:38Z), 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/TCAJI2585916.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5401fa6fbe0406f4574f15135a1a03cc1694e0d55c834b1fd4feae8331e1f1cc. 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/TCAJI2585918.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xeab91c959547abacf28cfc84d094ecd276d4ab18a7051c359decb92297899e3e. Chain 2 (Bitcoin): anchored in block 958271 (2026-07-16T09:16:54Z), 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/TCAJI2585920.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x4adcb43e934b13e7cb963ae74ae8b491f205adfa3c3e290ab9d970365460cc6e. Chain 2 (Bitcoin): anchored in block 959061 (2026-07-22T00:23:31Z), 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/TCAJI2585922.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x5d28410a92f7ae8b0066ae3308c1d9b3b509f0392773734d7d49dbb6ac0645ff. Chain 2 (Bitcoin): anchored in block 958969 (2026-07-21T04:58:13Z), 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/TCAJI2585925.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x77d278feb58ccad60e5685cacf665ed55dd50b09c169193b030b68f20f74bb81. Chain 2 (Bitcoin): anchored in block 956634 (2026-07-04T10:04:33Z), 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/TCAJI2585926.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0x7654579d9c6eff593c724e25af1c752faa404bf78bdeb9e05e16dc1f89ad8ab5. 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/TCAJI2585931.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xe5831acb8cca510c0adabf561950991272b716f2fe81eba729f4c7cac2979a29. 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/TCAJI2585934.
Dual-chain trust anchor. Chain 1 (CopyrightChains): CopyrightID 0xa764ea9a42b90c7cb3d66ec26610100ae7f6a0fa27539f9f28dcde80e85cdb26. 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/TCAJI2585943.